Open Source Windows Diagram Software
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Diagram Software for Windows
View 35 business solutionsBrowse free open source Diagram software and projects for Windows below. Use the toggles on the left to filter open source Diagram software by OS, license, language, programming language, and project status.
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Catch Bugs Before Your Customers DoMove from alert to fix before users notice. AppSignal monitors errors, performance bottlenecks, host health, and uptime—all from one dashboard. Instant notifications on deployments, anomaly triggers for memory spikes or error surges, and seamless log management. Works out of the box with Rails, Django, Express, Phoenix, Next.js, and dozens more. Starts at $23/month with no hidden fees.
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PlantUml allows to quickly create some UML diagram using a simple textual description language.
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drawio-desktop
Security-first diagramming for teams
Security-first diagramming for teams. Bring your storage to our online tool, or go max privacy with the desktop app. Works with Google Drive and Google Workplace (G Suite). Use add-ons for Docs, Sheets and Slides. Works with OneDrive and Sharepoint. Office 365 app for Word, Powerpoint and Excel. Highest-rated Confluence app in the Atlassian Marketplace. Works in Jira too. Works with GitHub, GitLab and Dropbox for visual documentation in distributed teams. Download diagrams.net Desktop for offline use on Windows, macOS, Linux and ChromeOS. Nextcloud is an ideal on-premise file hosting system for diagrams.net. Entity relationship diagrams or ER models in software engineering show the structure of and relationships between database objects. They are used extensively in database modelling to plan new systems, and document existing systems for maintenance and updates. -
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diagrams.net
Security-first diagramming for teams
Bring your storage to our online tool, or go max privacy with the desktop app. Diagram files created in 2005 will load in the app today. Works with Google Drive and Google Workplace (G Suite). Use add-ons for Docs, Sheets and Slides. It works with OneDrive and Sharepoint. Office 365 app for Word, Powerpoint and Excel. Highest-rated Confluence app in the Atlassian Marketplace. Works in Jira too. Works with GitHub, GitLab and Dropbox for visual documentation in distributed teams. You can download diagrams.net Desktop for offline use on Windows, macOS, Linux and ChromeOS. Nextcloud is an ideal on-premise file hosting system for diagrams.net. -
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Xfig
Xfig is a diagramming tool
Xfig is a diagramming tool. -
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Mermaid
Diagram and flowchart generation from text similar to markdown
Mermaid is a JavaScript-based diagram and flowchart generating tool that uses markdown-inspired text for fast and easy generation of diagrams and charts. Forget about using heavy tools to explain your code. Mermaid greatly simplifies documentation with its simple markdown-like script language, and offers a great range of diagram and chart options. The latest version of Mermaid comes with a number of bug fixes and enhancements, as well as a new diagram type, entity relationship diagrams. Its range of available diagrams include flowcharts, sequence diagrams, gantt diagrams and more, with new ones continuously being developed. -
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PlantUML
Generate diagrams from textual description
Generate UML diagram from textual description. PlantUML is not affected by the log4j vulnerability. The easiest way to test PlantUML is in an online solution that has PlantUML embedded, such as our online server. After testing, you may want to install PlantUML locally. Run (or have your software call) PlantUML, using sequenceDiagram.txt as input. The output is an image, which either appears in the other software, or is written to an image file on disk. Diagrams are defined using a simple and intuitive language. (see PlantUML Language Reference Guide). Images can be generated in PNG, in SVG or in LaTeX format. It is also possible to generate ASCII art diagrams (only for sequence diagrams). -
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Pencil
The Pencil Project's unique mission is to build a free tool
Pencil is built for the purpose of providing a free and open-source GUI prototyping tool that people can easily install and use to create mockups in popular desktop platforms. The latest stable version of Pencil is 3.1.0 which contains stability fixes and many new features. More details can befound in the releaste notes. Pencil provides various built-in shapes collection for drawing different types of user interface ranging from desktop to mobile platforms. Starting from 2.0.2, Pencil is shipped with Android and iOS UI stencils pre-installed. This makes it even easier to start protyping apps with a simple installation. Starting from 2.0.2 Pencil has even more shape collections included by default. The list of built-in collections now includes general-purpose shapes, flowchart elements, desktop/web UI shapes, Android and iOS GUI shapes. -
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Zipkin
Distributed tracing system to gather timing data
Zipkin is a distributed tracing system. It helps gather timing data needed to troubleshoot latency problems in service architectures. Features include both the collection and lookup of this data. If you have a trace ID in a log file, you can jump directly to it. Otherwise, you can query based on attributes such as service, operation name, tags and duration. Some interesting data will be summarized for you, such as the percentage of time spent in a service, and whether or not operations failed. The Zipkin UI also presents a Dependency diagram showing how many traced requests went through each application. This can be helpful for identifying aggregate behavior including error paths or calls to deprecated services. Applications need to be “instrumented” to report trace data to Zipkin. -
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ERMaster is Eclipse plug-in to make ER diagram. Functionally, Import from data base, Making of table definition book on Excel, Image output, DDL output, etc. are being offered.
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draw.io
JavaScript client-side editor for general diagramming & whiteboarding
draw.io is a JavaScript, client-side editor for general diagramming and whiteboarding. draw.io, this project, is a configurable diagramming/whiteboarding visualization application. draw.io is jointly owned and developed by JGraph Ltd and draw.io AG. draw.io is a diagramming or whiteboarding application, depending on which theme is selected. It is not an SVG editing app, the SVG export is designed only for embedding in web pages, not for further editing in other tools. The application is designed to be used largely as-is. It's possible to alter the major parts of the interface, but if you're looking for an editor with very specific editing features, the project is likely not a good base to use. That is to say, if you wanted to create/deploy a whiteboard or diagramming application where the functionality in the main canvas is as this project provides, it is more likely to be a good base to use. -
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WaveDrom
Digital timing diagram rendering engine
WaveDrom is a free and open-source online digital timing diagram (waveform) rendering engine that uses javascript, HTML5 and SVG to convert a WaveJSON input text description into SVG vector graphics. WaveJSON is an application of the JSON format. The purpose of WaveJSON is to provide a compact exchange format for digital timing diagrams utilized by digital HW / IC engineers. The engine is using WaveDromSkin skin mechanism to render a complete picture. WaveDrom draws your Timing Diagram or Waveform from a simple textual description. It comes with description language, a rendering engine and an editor. WaveDrom editor works in the browser or can be installed on your system. -
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D2
D2 is a modern diagram scripting language that turns text to diagrams
D2 is a diagram scripting language that turns text to diagrams. It stands for Declarative Diagramming. Declarative, as in, you describe what you want diagrammed, it generates the image. As well, the functioning of the install script is described in detail to alleviate any concern of its use. We recommend using your OS's package manager directly instead for improved security but the install script is by no means insecure. D2 includes a variety of official themes to style your diagrams beautifully right out of the box. See ./d2themes to browse the available themes and make or contribute your own creation. D2 is designed with language tooling in mind. D2's parser can parse multiple errors from a broken program, has an autoformatter, syntax highlighting, and we have plans for LSP's and more. Good language tooling is necessary for creating and maintaining large diagrams. D2 is designed to be extensible and composable. -
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Yaoqiang BPMN Editor
an Open Source BPMN 2.0 / DMN 1.1 Modeler
Yaoqiang BPMN Editor is a graphical editor for business process diagrams, compliant with OMG specifications (BPMN 2.0 / DMN 1.1). -
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UML Reverse Mapper
Automatically generate class diagram from code
UML Reverse Mapper is a utility that helps convert existing code structures into UML-like representations so developers can visualize and reason about their systems. It is aimed at teams that inherit codebases or work on legacy projects and need a fast way to understand classes, relationships, and dependencies. Instead of drawing UML by hand, you point the tool at the code and let it generate artifacts that resemble standard UML diagrams. This dramatically speeds up documentation and makes architectural conversations more concrete. Because it is source-first, the documentation it produces is less likely to get out of sync than manually authored diagrams. It’s especially helpful for onboarding, architecture reviews, and planning refactors because you can show real structure, not just intended structure. -
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Music Lake PC
Electron Music Lake PC
Electronic cross-platform music player; can search Netease Cloud, QQ Music, Xiami Music; support QQ, Weibo, Github login, cloud playlist; support one-click import of music platform playlist. Song Api covers NetEase Cloud, QQ Music, Xiami. The interface imitates QQ music. Mac > Windows > Linux will gradually adapt. For Android client, see caiyonglong/MusicLake. The process of login, collection, and playback is basically no problem, and it can be used as a daily work program to listen to songs in the background. The energy is limited, and the demand is not saturated. It will be gradually improved. If you are interested, you can give a star to wait for improvement and bug fixes. You can also submit issues for the desired functions. Code Architecture Diagram. Search/ Featured/ List/ Artist Details/ Album Details/ Song Comments/ Netease Cloud MV. Support QQ, Weibo authorized login, cloud playlist. Support one-click import of NetEase Cloud, QQ Music, Xiami playlist. -
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Nx
Smart, fast and extensible build system
Nx builds a project graph by analyzing your workspace, which it then uses to only rebuild what is necessary and to never run the same computation twice. Nx also helps establish structured code sharing and ownership management to keep the workspace maintainable. Nx provides a modern integrated dev experience. It has a high-quality VS Code plugin, interactive visualizations, GitHub integration and more. The core of Nx is generic, simple, and unobtrusive. Nx Plugins are completely optional, but they can really level up your productivity. Whether you have one project or one thousand, Nx will keep your CI fast and your workspace maintainable. Nx is smart. It analyzes your workspace and figures out what can be affected by every code change. That's why Nx doesn't rebuild and retest everything on every commit, it only rebuilds what is necessary. Nx comes with an interactive dependency diagram to help explore and understand your workspace. -
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ChatterBot
Machine learning, conversational dialog engine for creating chat bots
ChatterBot is a Python library that makes it easy to generate automated responses to a user’s input. ChatterBot uses a selection of machine learning algorithms to produce different types of responses. This makes it easy for developers to create chat bots and automate conversations with users. For more details about the ideas and concepts behind ChatterBot see the process flow diagram. The language independent design of ChatterBot allows it to be trained to speak any language. Additionally, the machine-learning nature of ChatterBot allows an agent instance to improve it’s own knowledge of possible responses as it interacts with humans and other sources of informative data. An untrained instance of ChatterBot starts off with no knowledge of how to communicate. Each time a user enters a statement, the library saves the text that they entered and the text that the statement was in response to. As ChatterBot receives more input the number of responses that it can reply increase. -
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LogicFlow
A flow chart editing framework focusing on business customization
LogicFlow is a flowchart editing framework that provides a series of functions necessary for flowchart interaction and editing, as well as simple and flexible node customization, plug-in and other expansion mechanisms, so that we can quickly meet the needs of class flowcharts in business systems. Compatible with the process editing requirements of various product customizations, most modules are implemented in the form of plug-ins, and each module is supported to be plugged and unplugged freely. Flowcharts can fully express business logic without being limited by process engines. A framework focused on business process flow editing. -
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C4-PlantUML
C4-PlantUML combines the benefits of PlantUML and the C4 model
C4-PlantUML combines the benefits of PlantUML and the C4 model for providing a simple way of describing and communicating software architectures – especially during up-front design sessions, with an intuitive language using open source and platform-independent tools. C4-PlantUML includes macros, stereotypes, and other goodies (like VSCode Snippets) for creating C4 diagrams with PlantUML. At the top of your C4 PlantUML .puml file, you need to include the C4_Context.puml, C4_Container.puml or C4_Component.puml file found in the root of this repo. -
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ReacType
Prototyping Tool for exporting React/Typescript Applications!
ReacType is a rapid prototyping tool built on Electron that allows users visualize their application architecture dynamically, employing a drag-and-drop canvas display and an interactive, real-time component code preview that can be exported as a React app for developers employing React component architecture alongside the comprehensive type-checking of TypeScript. In other words, you can draw prototypes and export React / TypeScript code! After opening the dmg and dragging ReacType into your Applications folder, ctrl+click the icon and select 'Open' from the context menu to run the app. This extra step is necessary since we don't have an Apple developer license yet. If you are given a warning that Apple could not scan the app. Users can now manage state dynamically within nested components using React Hooks within the state manager tab. For a selected component, users can see a list of available props from the parent, add props, and delete props in case they are not required later on. -
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TerraCognita
Reads from existing public and private cloud providers
Imports your current Cloud infrastructure to an Infrastructure As Code Terraform configuration (HCL) or/and to a Terraform State. At Cycloid, Infrastructure As Code is in the company's DNA since the beginning. To help our new customers adopt this best practice, we decided to build Terracognita to convert an existing infrastructure on Cloud Infrastructure into Terraform code in an automated way, relying on Terraform providers built by the community. We focused on AWS, GCP and Azure but Alibaba, Vmware and Openstack will be the next to be integrated. We decided to Open Source this tool as we believe that it will help people to adopt IaC in an easy way. Cycloid provides this tool to let people import their infrastructure into Cycloid's pipelines, allow them to generate infrastructure diagram and manage all infra/application life cycle from a single interface. -
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Delaunator
Fast JavaScript library for Delaunay triangulation of 2D points
Delaunator is a fast library for Delaunay triangulation. It takes as input a set of points. The triangulation is represented as compact arrays of integers. It’s less convenient than other representations but is the reason the library is fast. After constructing a delaunay = Delaunator.from(points) object, it will have a triangles array and a halfedges array, both indexed by half-edge id. What’s a half-edge? A triangle edge may be shared with another triangle. Instead of thinking about each edge A↔︎B, we will use two half-edges A→B and B→A. Having two half-edges is the key to everything this library provides. It will also be useful to have some helper functions to go from one half-edge to the next and previous half-edges in the same triangle. We can draw all the triangle edges without constructing the triangles themselves. -
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DiagrammeR
Graph and network visualization using tabular data in R
DiagrammeR is an R package to create, manipulate, and visualize network graphs, flowcharts, diagrams, and more using Graphviz and Mermaid syntax. Integrates with RMarkdown and Shiny apps, supports node/edge traversal, and graph analysis algorithms, making it ideal for documenting processes, causal relationships, or data pipelines. -
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Mozc Devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
mozc-devices is an open source collection of circuit diagrams, firmware, and technical documentation for a series of experimental and often humorous Gboard and Google Japanese Input hardware keyboards, many of which were originally released as April Fools’ projects by Google Japan. Each subproject in the repository corresponds to a unique input device prototype, including versions such as the Drum Set, Morse Code, Patapata, Magic Hand, Piropiro, Physical Flick, Puchi Puchi, Nazoru, Mageru, Yunomi, Bar, Caps, Double Sided, and Dial editions. These devices creatively reinterpret how users can interact with Japanese text input, blending humor, engineering, and physical computing. The repository serves as an archive of the schematics, firmware, and PCB designs for these inventive input mechanisms, with many projects including promotional videos and technical references. -
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Rover
Interactive Terraform visualization. State and configuration explorer
Rover is a Terraform visualizer. In order to do this, Rover generates a plan file and parses the configuration in the root directory or uses a provided plan. Parses the plan and configuration files to generate three items: the resource overview (rso), the resource map (map), and the resource graph (graph). Consumes the rso, map, and graph to generate an interactive configuration and state visualization hosts on 0.0.0.0:9000. You can build Rover manually by cloning this repository, then building the frontend and compiling the binary.
