Alternatives to API Science
Compare API Science alternatives for your business or organization using the curated list below. SourceForge ranks the best alternatives to API Science in 2025. Compare features, ratings, user reviews, pricing, and more from API Science competitors and alternatives in order to make an informed decision for your business.
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1
Site24x7
ManageEngine
ManageEngine Site24x7 is a comprehensive observability and monitoring solution designed to help organizations effectively manage their IT environments. It offers monitoring for back-end IT infrastructure deployed on-premises, in the cloud, in containers, and on virtual machines. It ensures a superior digital experience for end users by tracking application performance and providing synthetic and real user insights. It also analyzes network performance, traffic flow, and configuration changes, troubleshoots application and server performance issues through log analysis, offers custom plugins for the entire tech stack, and evaluates real user usage. Whether you're an MSP or a business aiming to elevate performance, Site24x7 provides enhanced visibility, optimization of hybrid workloads, and proactive monitoring to preemptively identify workflow issues using AI-powered insights. Monitoring the end-user experience is done from more than 130 locations worldwide. -
2
KrakenD
KrakenD
KrakenD is a high-performance API Gateway optimized for resource efficiency, capable of managing 70,000 requests per second on a single instance. The stateless architecture allows for straightforward, linear scalability, eliminating the need for complex coordination or database maintenance. It supports various protocols and API specifications, with features like fine-grained access controls, data transformation, and caching. Unique to KrakenD is its ability to aggregate multiple API responses into one, streamlining client-side operations. Security-wise, KrakenD aligns with OWASP standards and doesn't store data, making compliance simpler. It offers a declarative configuration and integrates with third-party logging and metrics tools. With transparent pricing and an open-source option, KrakenD is a comprehensive API Gateway solution for organizations prioritizing performance and scalability. -
3
Uptrends
Uptrends
ITRS Uptrends helps organizations achieve 24x7 reliability and performance for web services (websites, SaaS, APIs), so mission-critical transactions work from anywhere, anytime. ITRS Uptrends’ intuitive no-code/low-code transaction recorder simplifies the monitoring setup, driving rapid time-to-value even across multi-vendor/domain business services. We continuously monitor multistep user journeys from 368 nodes in 67 countries to provide full visibility beyond uptime. Alongside synthetic monitoring, our real user monitoring captures service usage and adoption to show IT's business impact. Integrating with our real-time observability portfolio, ITRS Uptrends offers end-to-end visibility of business services across hybrid infrastructures. As a SaaS solution, ITRS Uptrends is deployment-free unless private checkpoints are required to monitor from within a corporate network. -
4
Blackbird API Development
Ambassador
Accelerate Development of Prod-Ready APIs. AI-Powered Code Gen, Mocking in Minutes, and On-Demand Ephemeral Test Environments. * Design Efficiently: Generate standardized OpenAPI specs with AI assistance, allowing you to begin coding faster. * Mock Effortlessly: Create shareable API mocks without manual coding, enabling rapid validation. * Automate Repetitive Tasks: Utilize AI to automatically generate boilerplate code for both client and server-side APIs. * Test Effectively: Access publicly available URLs for testing in a production-like test environment through Blackbird's ephemeral testing environments. * Debug Seamlessly: Set breakpoints and debug directly from your preferred IDE with Blackbird's integrated debugging tools. * Deploy Smoothly: Utilize a 24/7 hosted environment for progressive and repeated testing without reconfiguration, facilitated by Blackbird's containerized deployment.Starting Price: $69/month -
5
Sematext Cloud
Sematext Group
Sematext Cloud is an innovative, unified platform with all-in-one solution for infrastructure monitoring, application performance monitoring, log management, real user monitoring, and synthetic monitoring to provide unified, real-time observability of your entire technology stack. It's used by organizations of all sizes and across a wide range of industries, with the goal of driving collaboration between engineering and business teams, reducing the time of root-cause analysis, understanding user behaviour and tracking key business metrics. The main capabilities range from log monitoring to APM, server monitoring, database monitoring, network monitoring, uptime monitoring, website monitoring or container monitoring Find complete details on our website. Or better: start a free demo, no email address required.Starting Price: $0 -
6
Ambassador
Ambassador Labs
Ambassador Edge Stack is a Kubernetes-native API Gateway that delivers the scalability, security, and simplicity for some of the world's largest Kubernetes installations. Edge Stack makes securing microservices easy with a comprehensive set of security functionality, including automatic TLS, authentication, rate limiting, WAF integration, and fine-grained access control. The API Gateway contains a modern Kubernetes ingress controller that supports a broad range of protocols including gRPC and gRPC-Web, supports TLS termination, and provides traffic management controls for resource availability. Why use Ambassador Edge Stack API Gateway? - Accelerate Scalability: Manage high traffic volumes and distribute incoming requests across multiple backend services, ensuring reliable application performance. - Enhanced Security: Protect your APIs from unauthorized access and malicious attacks with robust security features. - Improve Productivity & Developer Experience -
7
Telepresence
Ambassador Labs
Telepresence streamlines your local development process, enabling immediate feedback. You can launch your local environment on your laptop, equipped with your preferred tools, while Telepresence seamlessly connects them to the microservices and test databases they rely on. It simplifies and expedites collaborative development, debugging, and testing within Kubernetes environments by establishing a seamless connection between your local machine and shared remote Kubernetes clusters. Why Telepresence: Faster feedback loops: Spend less time building, containerizing, and deploying code. Get immediate feedback on code changes by running your service in the cloud from your local machine. Shift testing left: Create a remote-to-local debugging experience. Catch bugs pre-production without the configuration headache of remote debugging. Deliver better, faster user experience: Get new features and applications into the hands of users faster and more frequently.Starting Price: Free -
8
Kinective Bridge
Kinective
With Kinective Bridge™ (formerly OmniConnect), easily connect your core with best-of-breed fintechs to scale digital transformation, modernize operations, and increase client delight. Transformation sounds great on paper, but hard to make a reality with legacy tech stacks and outdated infrastructures. The hassle of switching cores or burning through in-house dev hours to integrate systems can be a slow, time-consuming process. To thrive in today’s modern, digitally-focused world, you need one connection to scale your transformation efforts quickly and securely. Kinective has the connections you need. Our Kinective Bridge™ (formerly OmniConnect) solutions give you control by bridging the gap between legacy systems and modern digital services through 80+ turnkey fintech integrations across 99% of US-based cores. -
9
Postman
Postman
The collaboration platform for API development. Simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Postman is a collaboration platform for API development. Postman's features simplify each step of building an API and streamline collaboration so you can create better APIs—faster. Quickly and easily send REST, SOAP, and GraphQL requests directly within Postman. Automate manual tests and integrate them into your CI/CD pipeline to ensure that any code changes won't break the API in production. Communicate the expected behavior of an API by simulating endpoints and their responses without having to set up a backend server. Generate and publish beautiful, machine-readable documentation to make your API easier to consume. Stay up-to-date on the health of your API by checking performance and response times at scheduled intervals. Provide a shared context for building and consuming APIs, and collaborate in real-time.Starting Price: $12 per user per month -
10
IBM Instana
IBM
IBM Instana is the gold standard of incident prevention with automated full-stack visibility, 1-second granularity and 3 seconds to notify. With today’s highly dynamic and complex cloud environments, the average cost of an hour of downtime can reach six figures and beyond. Traditional application performance monitoring (APM) tools simply aren’t fast enough to keep up or thorough enough to contextualize the issues identified. Also, they are typically limited to super users who must complete months of training to learn. IBM Instana Observability goes beyond traditional APM solutions by democratizing observability so anyone across DevOps, SRE, platform engineering, ITOps and development can get the data they want with the context they need. Instana Dynamic APM operates using the Instana agent architecture, which incorporates sensors—lightweight, automated programs tailored to monitor specific entities.Starting Price: $75 per month -
11
Splunk AppDynamics
Cisco
Splunk AppDynamics delivers full-stack observability for hybrid and on-prem environments, linking technical performance directly to business outcomes. It enables teams to detect anomalies, diagnose root causes, and prioritize issues based on their real business impact. With capabilities ranging from network performance correlation to SAP system optimization, the platform offers deep insights across applications, APIs, and infrastructure. Its runtime security features safeguard applications by detecting vulnerabilities, blocking attacks, and highlighting potential risks. AppDynamics also enhances digital experiences with web, mobile, and synthetic monitoring to understand user journeys. By unifying performance, security, and business analytics, Splunk AppDynamics helps enterprises reduce costs, prevent outages, and deliver seamless customer experiences.Starting Price: $6 per month -
12
ThousandEyes
Cisco
Cisco ThousandEyes is a cutting-edge network intelligence platform designed to provide organizations with deep visibility into digital experiences across the internet, cloud, and enterprise networks. By leveraging advanced monitoring and analytics, ThousandEyes helps businesses pinpoint, troubleshoot, and resolve performance issues impacting critical applications, websites, and services. Its comprehensive suite of tools offers insights into network performance, application delivery, and user interactions, enabling organizations to ensure seamless connectivity and optimal user experiences. Widely adopted by Fortune 500 companies and SaaS providers, ThousandEyes is a trusted solution for navigating the complexities of modern hybrid and multi-cloud environments, empowering IT teams to proactively manage and optimize their digital ecosystems. -
13
Datadog
Datadog
Datadog is the monitoring, security and analytics platform for developers, IT operations teams, security engineers and business users in the cloud age. Our SaaS platform integrates and automates infrastructure monitoring, application performance monitoring and log management to provide unified, real-time observability of our customers' entire technology stack. Datadog is used by organizations of all sizes and across a wide range of industries to enable digital transformation and cloud migration, drive collaboration among development, operations, security and business teams, accelerate time to market for applications, reduce time to problem resolution, secure applications and infrastructure, understand user behavior and track key business metrics.Starting Price: $15.00/host/month -
14
Testfully
Testfully
From powerful API client features to advanced testing and monitoring, Testfully does it all. Enjoy the flexibility of cloud and offline-only storage, seamless team collaboration, and easy migration, all in one multi-platform tool. Easily transfer your data from Postman or Insomnia directly into Testfully. Flexible and secure, set global, environment, and folder variables scoped to workspace or user. Customize auth, parameters, headers, and body to build any HTTP request easily. Work together effortlessly, add teams, assign roles, and control folder access. Supports major schemes like OAuth2 for secure and streamlined authorization. From basic to complex, Testfully enables quick, effective testing without the need for coding, making advanced API testing accessible and hassle-free. Execute all requests in a folder simultaneously, sequentially, or randomly with just one click. Validate responses and perform contract testing using a declarative format, no coding is needed.Starting Price: $49 per month -
15
Runscope
Runscope
An API Monitoring (Runscope) API test is a group of one or more HTTP requests executed sequentially to evaluate the uptime, performance and correctness of an API. For each step in the test, you can define Assertions to validate response data and Variables to extract data to be used in subsequent requests. A test Passes if all the assertions pass. A test Fails if any assertion fails, or another error is encountered, such as a network connection problem. Your customers shouldn’t be the ones telling you about downtime and breakages. Runscope supports the notification tools you already use, like PagerDuty, Slack, HipChat, email, webhooks and more. Proactively monitor service performance to quickly catch and debug API problems fast. Stay ahead of intermittent failures before they become major issues with the API Dashboard and daily API Performance Report. Verify that the structure and content of your API calls meets your expectations. Powerful and flexible assertions give you total control. -
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APImetrics
APImetrics
Real-time, independent, API monitoring for developers, consumers, providers, and regulators. 70% of problems with APIs are missed by other tools and systems. Real, outside-in, calls from where users are any where in the world. Ongoing assurance that your APIs are secure and stay secure. See how services measure up easily. Real-time alerts when things go wrong, meaningful reports. Solve 3rd party disputes quickly. Meet regulator needs and be able to prove it to others quickly. Meaningful analysis and metrics. Actionable service level agreements with easy reporting. Customized API monitoring for all REST and SOAP APIs. Cross-cloud integrated support. API security standards including JSON signing. Full compliance with security standards. Seamless integration via webhook with common DevOps and CI/CD tools. Complete coverage and assurance. -
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Checkly
Pink Robots
Monitor the status and performance of your API endpoints & vital site transactions from a single, simple dashboard. Checkly is an active reliability platform that brings together the best of end-to-end testing and active monitoring to serve modern, cross-functional DevOps teams. With a focus on JavaScript-based Open Source tech stacks, Checkly is easy to get started with and seamlessly integrates into your development workflow. Checkly is the API & E2E monitoring platform for the modern stack: programmable, flexible and loving JavaScript. Monitor and validate your crucial site transactions. Take screenshots and get instant insights into what's working and what's not. Coding browser click-flows used to be hard. Not anymore. Use modern open source frameworks like Playwright and Puppeteer to automate your flows. Run your checks in 20 locations worldwide. Make sure your APIs always responds quickly and with the correct payload.Starting Price: $0.80 /10k API check runs -
18
Xano
Xano
Xano is the unified backend for building and deploying production-grade apps and AI agents. Instead of stitching together databases, runtimes, APIs, auth, integrations, and monitoring—plus a separate orchestrator for agents—Xano provides everything in one secure, scalable platform. Teams can model data, compose logic, expose secure APIs, and integrate with any system, while AI agents can use data and APIs, call external tools, and run server-side with observability and guardrails. Build visually, with AI, or in code from your IDE, then deploy with one click and scale automatically. Xano works with any frontend, including Lovable, Bolt, WeWeb, Retool, and custom code, so you don’t need to rebuild as you grow. Compliance, reliability, and scaling are built-in, enabling teams to focus on the business logic that makes their software unique.Starting Price: Free -
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Assertible
Assertible
The easiest way to test and monitor your web services. Gain confidence in critical infrastructure by using Assertible's automated QA tools to test and monitor your web services across deployments and environments. Assertible provides a reliable first line of defense against web service failures by providing simple and powerful assertions to test and monitor your APIs and websites. Lower the number of false positives in your automated QA tests and be confident your APIs are healthy. Keeping your tests up to date can be a burden, but with Assertible you can automatically sync your API tests with the latest changes in your specification. As you add and update responses, parameters, headers, and more, updating your Assertible API tests is as easy as clicking sync. Assertible integrates with the tools you're already using and lets you do things like execute your web app tests when you push code to GitHub, or send alerts to Slack if failures happen.Starting Price: $25 per month -
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The Rigor Digital Experience Monitoring platform combines the power of synthetic monitoring with an intelligent optimization engine to help you find, fix and prevent website performance and user experience issues.
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21
42Crunch
42Crunch
Your most valuable intelligence isn’t AI, it’s your developers. Empower them with tools to be the driving force behind API security – ensuring continuous, unparalleled protection across the entire API lifecycle. Push your OpenAPI definition to your CI/CD pipeline and automatically audit, scan and protect your API. Audit your OpenAPI / Swagger file against 300+ security vulnerabilities, we’ll rank them by severity level and tell you exactly how to fix them – making security a seamless part of your development lifecycle Enforce a zero-trust architecture by ensuring all your APIs meet a set security standard before production, scan the live API endpoints for potential vulnerabilities, and automate redeployment. Ensure security of all your APIs from design to deployment, get detailed insight about attacks on APIs in production – and protect against threats – without impacting performance. -
22
Integration Eye
Integsoft
Integration Eye® is a modular product, which streamlines system integrations, infrastructure, and business. It consists of 3 modules: proxy module IPM, logging module ILM, and the security module ISM, which can be used independently or combined. It is based on the widely used, secure, and platform-independent Java language (why choose Java?) and it runs on the lightweight integration engine Mule™. Using individual Integration Eye® modules, you can monitor your APIs and systems, create statistics on and analyze calls (logging with the ILM module), and be alerted to any problems, downtime, or slow responses of specific APIs and systems. You can secure your APIs and systems using roles (authorization and authentication with the ISM module) based on Keycloak SSO we deliver or your existing Auth server. You can extend or proxy service calls (both internal and external) with mutual SSL, headers, etc. (proxy with IPM) you can also monitor and analyze these calls. -
23
AlertSite
SmartBear
AlertSite is the 'Early Warning System' you can trust to monitor your websites, web apps, and APIs from all over the world and within your private networks. You shouldn't be burdened by the fear and the consequence of whether an alert is real or false. AlertSite monitors your UI and API layer for availability, performance, and functionality without the alert fatigue of other monitoring tools. Creating Web and API monitors in AlertSite is intuitive and effortless. Codelessly add new web monitors with DejaClick, our point-and-click web recorder, and API Monitors in just a few clicks using an API Endpoint URL or OpenAPI Specification file. Or, reuse test cases like Selenium Scripts or SoapUI tests to create new monitors. Don't let false alerts and erroneous data cloud your visibility into application health. -
24
Apidog
Apidog
Apidog is a complete set of tools that connects the entire API lifecycle, helping R&D teams implement best practices for API Design-first development. Design and debug APIs in a powerful visual editor. Describe and debug easily with JSON Schema support. Automate API lifecycle with Apidog's test generation from API specs, visual assertion, built-in response validation, and CI/CD. Generate visually appealing API documentation, publish to custom domain or securely share with collaborative teams. Local and cloud mock engine generate reasonable mock data according to field names and specifications without writing scripts. Quality tools have the power to unite your entire team, while ensuring that no task is needlessly repeated. Effortlessly describe your API as you test it, and generate JSON/XML schemas with a simple click. Generate test cases from APIs, add assertions visually, and create test scenarios with branches and iterations easily.Starting Price: $9 per user per month -
25
One APIMarketplace
DigitalAPICraft
Publish, consume, collaborate, accelerate your API journey, and enhance developer experience with our enterprise-grade, API platform-agnostic One APIMarketplace. Reduces API sprawl and API complexities through the operationalization of APIs, making them discoverable, consumable, easy to access, easy to collaborate, and more. One APIMarketplace brings down the time to market by effectively increasing the API adoption, through ease of access, API usage, and performance insights to boost the API consumption. Empower developers with intuitive documentation, community engagement, resources, SDKs, and sandboxes to accelerate API adoption. One APIMarketplace streamlines the discovery and usage of your APIs, guaranteeing a smooth and hassle-free experience for developers and businesses alike. Access comprehensive documentation and test APIs in a sandbox before integration. Gain insights into API usage, performance, and user behavior with our analytics dashboard.Starting Price: $99 per month -
26
Apigee
Google
The Cross-Cloud API Management Platform. Build and deliver modern applications faster with well-managed APIs. Quickly deliver mobile apps to be where your customers are. Build a bridge between legacy systems and modern applications. Easily deliver partner and third-party offerings to customers through APIs. Hide clunky UIs and processes behind a clean API facade. Create a unified customer experience for your brand by unlocking siloed systems. Gain full visibility into API traffic, developer behavior, and other systems operations. Measure KPIs and generate actionable intelligence to inform business decisions. Leverage machine learning to identify anomalies and apply corrective actions. API management tools provide businesses with critical knowledge about API traffic trends, top developers, and API response times. This enables them to attract developers, improve API performance, find issues, and make better business decisions. -
27
Service Watch
Service Watch
Service Watch is a comprehensive monitoring tool for websites, APIs, web services, cron jobs, and other internet-connected systems. It provides real-time monitoring, alerts, and detailed reports to ensure your services are running smoothly. Service Watch provides multiple alert options including email, SMS, Slack, Discord, and Telegram. We are constantly working on new notification channels, if you need something in particular don't hesitate to reach out.Starting Price: $29 per month -
28
Better Stack
Better Stack
Better Stack is a unified observability tool that helps you ship better software, faster. Schedule on-call rotations, receive actionable alerts, and resolve incidents with ease. Better Stack brings together incident management, uptime monitoring, status pages, log management, and infrastructure monitoring – all in one place. Built for speed and scale, it combines multiple monitoring and alerting workflows into a single, powerful interface that boosts visibility and slashes response times. Key features include an OpenTelemetry-native Kubernetes collector powered by eBPF, real-time alerting, and collaborative dashboards. Under the hood, Better Stack runs on ClickHouse, enabling lightning-fast queries and scalable ingestion across high-cardinality datasets. You can visualize your entire stack, turn all your logs into structured data, and query everything with SQL – as if it were a single database. Seamlessly integrates into your workflow with 100+ integrations.Starting Price: $29 per month -
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KloudMate
KloudMate
Squash latencies, detect bottlenecks, and debug errors. Join a rapidly expanding community of businesses from around the world, that are achieving 20X value and ROI by adopting KloudMate, compared to any other observability platform. Quickly monitor crucial metrics, and dependencies, and detect anomalies through alarms and issue tracking. Instantly locate ‘break-points’ in your application development lifecycle, to proactively fix issues. View service maps for every component in your application, and uncover intricate interconnections and dependencies. Trace every request and operation, providing detailed visibility into execution paths and performance metrics. Whether it's multi-cloud, hybrid, or private architecture, access unified Infrastructure monitoring capabilities to monitor metrics and gather insights. Supercharge debugging speed and precision with a complete system view. Identify and resolve issues faster.Starting Price: $60 per month -
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OnlineOrNot
OnlineOrNot
We monitor your websites, APIs, cron jobs, and scheduled tasks. Your team gets immediate alerts via email, SMS, Slack, PagerDuty, Incident.io, and more. You don't have to be an engineer to set it up. Simple and effective monitoring that lets you sleep a bit better at night. Check as often as every 30 seconds, and catch the issues that take your website down for less than a minute. You can configure the HTTP method, headers, and body for each check. OnlineOrNot runs every check at least twice before sending an alert, with options for even more. OnlineOrNot will check your SSL certificates for expiration and other issues, and alert you if there's a problem. You can choose to run uptime checks from one region, or all of them. Your customers rely on your products and services. Let them know your real-time status with an automatically updating status page. Add your customers as subscribers to your status page, and send consistent incident updates via email.Starting Price: $20 per month -
31
RapidAPI
RapidAPI
RapidAPI Testing is a functional API testing and monitoring solution that provides an intuitive UX, support for any API type, and integration with the RapidAPI Marketplace and Enterprise Hub. RapidAPI Testing enables users and enterprises to: Ensure API Functionality – Easily create intricate functional tests for deep validation of APIs. Centralize Monitoring – Monitor and manage API tests across multiple geographies. Improve Efficiency – Integrate to the CI/CD pipeline, collaborate across teams, and natively integrate with the RapidAPI Marketplace and Enterprise Hub. RapidAPI Testing enables you to create customizable functional test flows that provide deep validation of REST, SOAP, and GraphQL APIs. An easy-to-use interface offers users three options for test generation, enabling developers and non-developers to create visual, automated, or code-based test generation.Starting Price: $59 per user per month -
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Hubql
Hubql
Hubql is your local-first API Client to test, share, document and ship APIs faster. Start with any OpenAPI spec either through introspection via URL or using our server libraries passing your API schema. Hubql is built as local-first library storing your data offline. Our API client runs in browser only either as a local server plugin for example as NestJS plugin or distributed directly via CDN as JS library. Organize your APIs in workspaces and Hubs. Share your API Hubs with your team members and collaborate on the same API collection. Store your environment variables in your workspace and use them in your API requests. No need to copy-paste your variables anymore. -
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Hoppscotch
Hoppscotch LTD.
Hoppscotch makes it easy to create and test your APIs, helping you to ship products faster. Create APIs faster, test them instantly, document and share them automatically. From prototyping to production - develop without switching tabs. Hoppscotch got everything you need to make API development easy. Create workspaces for your teams. Control access to your workspaces. Work together with your team in real-time. Deploy Hoppscotch on your own servers. Organize your requests in collections or folders and share them with your team. Manage your environment variables and use them everywhere. View and manage your request history. Modify headers, authenticate requests, generate random data, and much more. Test your APIs and write assertions for the response. Use Hoppscotch in your native language. We support 30+ languages. Track all the activities in your workspace. Who did what and when. Use your existing SSO provider to login to Hoppscotch. Manage your users, workspaces, and more.Starting Price: $19 per user per month -
34
Atatus
NamLabs Technologies
NamLabs Technologies is an Indian software company that publishes a software suite called Atatus. Atatus is a SaaS software & a full stack observability platform. It provides a wide range of monitoring capabilities including Application Performance Monitoring, Real-User Monitoring/ End User Monitoring/ Browser Monitoring, Synthetic Monitoring, Infrastructure Monitoring, Logs Monitoring, and API Analytics. Analyze the performance of your application for performance issues such as slow transactions, database queries, website availability, uptime, latency, response time, and throughput, much more. 24x7 customer support is guaranteed.Starting Price: $49.00/month -
35
Apiary
Oracle
Write an API in 30 minutes. Share it with your teammates or customers. Let them use the API mock to take your API for a spin--without writing any code. Iterate, rinse & repeat. Coding can wait until you know what your developers really need. DNA for your API, powerful, open sourced and developer-friendly. The ease of Markdown combined with the power of automated mock servers, tests, validations, proxies, and code samples in your language bindings. It's often hard to see how an API will be used until you have the chance to code against it. What wireframes are for UI design, a server mock is for API design. A quick way to prototype an API - even before you start writing code. Two clicks will link Apiary to a repository of your choice. It’s up to you whether you make the API Blueprint private or public and let the community contribute. We update API docs every time you commit, and we push commits to the repo whenever you update your documentation at Apiary. It's a virtuous cycle. -
36
Firecamp
Firecamp
Navigate effortlessly through a clean and clutter-free interface, allowing you to focus on what truly matters—efficiently testing and collaborating on APIs. With a user-friendly interface and a range of powerful features, Firecamp streamlines the API development workflow and enhances collaboration among team members. Set values in variables to reuse in the whole platform dynamically. Publish beautiful API documentation for your team and community. Run API Collection Tests in the terminal or set in CI/CD pipeline. Test and debug your auth endpoints with a range of supported auths.Starting Price: Free -
37
Insomnia
Kong
Design, debug, and test APIs like a human, not a robot. Finally, a workflow you'll love. The Collaborative API Design Tool for designing, testing and managing OpenAPI specifications. The Desktop API client for REST and GraphQL. Make requests, inspect responses. Quickly create and group requests, specify environment variables, authentication, generate code snippets, and more. Get all the details on responses. View the whole request timeline, status codes, body, headers, cookies, and more. Create workspaces, folders, environments, drag-and-drop requests, and easily import and export your data. Create, edit, lint, debug, preview, and manage all of your OpenAPI specs in one collaborative API design editor. Generate configuration for common API gateways such as the Kong API Gateway, and Kong for Kubernetes. Sync your API designs with source control such as Github / Gitlab, and deploy directly to API Gateways such as Kong with one click.Starting Price: $5 per month -
38
SyncTree
Ntuple
SyncTree strives to be a "Super Connecting Platform" that can easily connect any services you want. With SyncTree, which consists of SyncTree STUDIO, a solution for building backend business logic with block coding, and Block Store, a platform for buying and selling pre-made backend function blocks like App Store, you can organically utilize data and connect services to achieve unlimited service expansion. Based on aPaaS, Block Store provides APIs from various services such as ChatGPT, DALLE, YouTube, etc. in the form of 'backend function blocks', which you can subscribe to and then combine as you want quickly in SyncTree STUDIO to build your business logic. SyncTree is for everyone, whether you're an individual or a business, and you can subscribe and use it according to your needs, from the free version to the PRO version.Starting Price: Free/1Month/3,000 Call -
39
KeyRunner
Launchiam
The Platform to Build, Test & Secure APIs. Transform how you design, test, and manage APIs. Collaborate easily, run tests locally, and protect sensitive data every step of the way. No Signup or Login Get started instantly—no need for lengthy sign-ups or logins. VS Code Extension & Desktop Apps Work where you're comfortable! Our VS Code extension and desktop apps integrate seamlessly with your existing workflow. Local Storage & Execution Keep data secure with local storage and execution, ensuring sensitive information stays on your device. Run Unlimited Collections Test and manage unlimited API collections, enabling effortless scaling for all your projects. Mock Servers Streamline development by creating mock servers for fast testing and API response simulation. Scriptless Testing & Playground Simplify testing with our user-friendly interface—experiment with APIs without writing any code. Our enterprise features take it even further. Contact us!Starting Price: $39/month/user -
40
Imvision
Imvision
How enterprises secure their APIs. Protect your APIs wherever they are, throughout their lifecycle. Gain visibility across the board and deeply understand the business logic behind your APIs. Uncover endpoints, usage patterns, expected flows, and sensitive data exposure through full API payload data analysis. By analyzing the full API data, Imvision allows you to go beyond predefined rules in order to discover unknown vulnerabilities, prevent functional attacks, and automatically shift-left to outsmart attackers. Natural Language Processing (NLP) allows us to achieve high detection accuracy at scale while providing detailed explainability. It can effectively detect ‘Meaningful Anomalies’ when analyzing API data as language. Uncover the API functionality using NLP-based AI to model the complex data relations. Detect behavior sequences attempting to manipulate the logic, at any scale. Understand anomalies faster and in the context of the business logic. -
41
Stoplight
Stoplight
Stoplight is an API Design, Development, and Documentation platform. Use Stoplight Platform to enable consistency, reusability, and quality in your API lifecycle, all with an easy, enjoyable developer experience. Here's what you can do with Stoplight Platform: - Design APIs with our easy visual designer, Stoplight Studio - Mock API designs automatically with Stoplight Prism mocking - Collaborate on your designs and invite internal and external users to provide feedback - Develop faster and better APIs - Test and enforce against style guides with Stoplight Spectral - Document both internal and external APIs automatically to create a delightful experience Utilize and integrate design-first workflows to quickly scale up standardized, collaborative, and well-governed API programs.Starting Price: Free -
42
TeejLab is at the forefront of applying data science and machine learning to help organizations with evolving challenges of API economy. The first and only industry solution designed for API governance at enterprises of global scale. What is your security and compliance posture vis a vis mainframe and legacy apps communicating with internal and external information systems via APIs? We built world’s first software composition analysis system for discovering shadow/hidden, private/public APIs via a curated knowledge base. What Google did to websites, TeejLab is doing to Web APIs. Our modular product portfolio is designed to meet varied API Governance needs of enterprises and communities, cost-efficiently while providing flexibility to add additional capabilities as those needs evolve. Whether you are an engineering shop looking to discover and benchmark APIs or a well-established API consumer or producer of APIs ready to expand your product portfolio, we have it covered.Starting Price: $179 per month
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43
Swagger
SmartBear
Simplify API development for users, teams, and enterprises with the Swagger open source and professional toolset. Find out how Swagger can help you design and document your APIs at scale. The power of Swagger tools starts with the OpenAPI Specification — the industry standard for RESTful API design. Individual tools to create, update and share OpenAPI definitions with consumers. SwaggerHub is the platform solution to support OpenAPI workflows at scale. Swagger open source and pro tools have helped millions of API developers, teams, and organizations deliver great APIs. Swagger offers the most powerful and easiest to use tools to take full advantage of the OpenAPI Specification. -
44
Treblle
Treblle
Treblle is a federated API Intelligence platform built for enterprises that need full visibility, control, and security over their APIs. With a single integration, Treblle provides real-time API Discovery, Observability, Analytics, Governance, Runtime Security, and Developer Portals. It supports on-prem and private cloud deployments to meet strict compliance and data privacy requirements. Treblle helps teams shift left by surfacing API issues early in development and ensuring consistency across environments. Its AI-powered Integration Assistant simplifies onboarding and reduces manual effort. Trusted by global enterprises and recognized over 15 times by Gartner, Treblle accelerates innovation while giving you complete control over your API landscape.Starting Price: $25 per month -
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Sparrow
Sparrow
Sparrow offers a complete set of tools that facilitate the entire API lifecycle, directing R&D teams toward excellence in API design-first development. Use cURL to send API requests, and support methods like GET and POST. It simplifies interacting with APIs, handling headers, data, and authentication easily. A collaborative open source solution for API development, streamlining the creation of exceptional APIs. By collaborations, developers can shift their development practices earlier in the process, leading to higher-quality APIs and faster development. Experience effortless parallel testing across diverse environments so you get the insights on the go. Sparrow offers powerful tools for securing and managing your API data along with self-hosting capabilities, providing users with complete control over their testing environment. Stay updated with Sparrow's latest developments, insights, and resources.Starting Price: Free -
46
Autostub
Torry Harris Business Solutions
AutoStub® is an essential tool to speed up API development. It can significantly reduce your build time by quickly designing, prototyping, documenting and testing APIs. AutoStub® creates a functional mock that allows developers to work with APIs before they are fully implemented. Available as a SaaS offering, for On-Premise deployments and in a hybrid model. Key Features Simulate ReST and SOAP services Input format - Swagger files for ReST, WSDL files for SOAP services Support for GET, POST, PUT, DELETE methods in ReST Create WSDL/Swagger 2.0 based mock services; generate dummy data for API testing Get an endpoint URL that can be used on a third party SOAP client tool Improves quality by facilitating functional testing Can handle multiple test scenarios together -
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API Tester
API Tester
API Tester is a completely free mobile app available on iOS, Android, macOS, and watchOS. It is a functional API testing tool that allows users to complete compound tasks on any device. - Test any API on the go: REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, HTTPS. - GET, POST, PUT, PATCH, DELETE, etc. HTTP request methods are supported. - Perform the API calls with any kind of request data encoding and transfer type. - Import collections from Swagger, Postman, and YAML, or import requests using cURL, as well as export created requests via link or cURL. - Use a powerful GraphQL editor with full-scale experience. - WebSocket testing tool is available: handles connection and message exchange via WS or WSS. The API Tester mobile app allows you to get the job away from your workstation. Save time, work from anywhere!Starting Price: Completely free -
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Dotcom-Monitor
Dotcom-Monitor
Website monitoring and performance testing solutions. Combined with powerful monitoring features such as real-time dashboards and performance reporting options, and nearly 30 global monitoring network locations, you can quickly identify where performance issues are occurring. Quickly and easily record custom scripts to monitor interactive websites and web application elements and user scenarios with the EveryStep Web Recorder. Dotcom-Monitor makes it easy to ensure performance, functionality, and uptime of the most complex websites, web applications, and web services.Starting Price: $19.99/month -
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UptimeMonk
UptimeMonk
UptimeMonk is a professional uptime monitoring solution designed to ensure businesses never miss a critical downtime event. With real-time website and API monitoring, it provides instant alerts the moment services go down. The platform tracks response times, monitors multiple check locations, and even validates API responses with text checks and POST data. Smart alerting features allow teams to customize thresholds, escalation logic, and delivery channels for maximum reliability. By providing detailed analytics, UptimeMonk helps businesses quickly identify performance issues and maintain seamless operations. Built with simplicity in mind, it delivers only the essential tools to keep systems running smoothly. -
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Ping Now
MotionObj
Ping Now is an uptime monitoring service that notifies you when your website, API or service is down. You give us a list of URLs and we'll check them regularly. If there’s an error, we will notify you by email. Monitors get disabled after 1 hour unless you have an active subscription. So you should be able to test it out free.Starting Price: $20 per month