Best Free Smart Contract Platforms

Unleash the potential of your business with HollaEx® — not just any white-label crypto software, but a comprehensive tool kit that revolutionizes your connection to the blockchain world 🌐. Featuring customized markets and crypto assets on your website, using the open-source HollaEx crypto tool kit As an open-source solution, it's free, fast, and straightforward to rebrand and customize. Exchange operators can assemble and host their platform in just a few simple steps, thanks to the user-friendly DIY setup. 💪 Paid HollaEx users get a cloud exchange that's automatically hosted, ensuring rapid ⚡ time-to-market. Pricing follows a pay-as-you-go model, and yearly subscriptions offer significant cost savings of up to 45%. It's a perfect fit for crypto entrepreneurs and bootstrapping startups. 💼 Comes with built-in liquidity from a network of over 100 other platforms allowing operators to focus their resource on localization, marketing and their online business strategies.

Meter is a high performance infrastructure that allows smart contracts to scale and travel seamlessly through heterogeneous blockchain networks. Meter is a Layer 1 and Layer 2 blockchain protocol. The Meter system consists of two tokens: MTRG, the governance token (eMTRG is the ERC20 version), and MTR, the low-volatility currency token. Financial assets should flow freely among blockchains. Meter’s HotStuff-based consensus allows 1000s of validator nodes, making Meter the most decentralized Layer 2 for Ethereum. Meter processes thousands of transactions per second and transactions are confirmed almost instantly. Meter Passport allows assets and smart contracts travel and communicate across heterogeneous blockchains for the best price, liquidity and yield. Meter is an Ethereum Compatible with unique enhancements. Unlike other Layer 2, DEXes build on Meter are front running/MEV resistant, fast and uncensorable.

Loopring is an open protocol for building scalable non-custodial exchanges on Ethereum. Leveraging zero-knowledge proofs (zkRollup), it allows for high performance trading (high throughput, low settlement cost), without sacrificing Ethereum-level security guarantees. Users always maintain 100% control of their assets throughout the trade lifecycle. You can trade on Loopring to test it out. Loopring is an open-sourced, audited, and non-custodial exchange protocol, which means nobody in the Loopring ecosystem needs to trust others. Cryptoassets are always under users' own control, with 100% Ethereum-level security guarantees. Loopring powers highly scalable decentralized exchanges by batch-processing thousands of requests off-chain, with verifiably correct execution via ZKPs. The performance of underlying blockchains is no longer the bottleneck. Loopring performs most operations, including order-matching and trade settlement, off the Ethereum blockchain.

Comprehensive Ethereum developer platform for real-time monitoring, alerting, debugging, and simulating Smart Contracts. Sort and group transactions by any parameter you want and make it easier to explore and analyze robust data. Inspect the transaction execution with a couple of clicks and instantly find the line your transaction reverted on. See the state of your contract at any point in a transaction and explore state changes in a granular view. Visualize and analyze the behavior of your Smart Contract to spot patterns and gain a deeper insight into transaction data. Any time an event triggers your custom set of rules you will receive a notification on your favorite channels like Slack, Email, PagerDuty, etc. Get a granular gas usage breakdown to help you optimize your Smart Contracts and lower the gas cost of your transactions. Know how your transactions will behave before you execute them, estimate the gas usage and test potential bug fixes.

End-to-end observability platform to help you gain insights, secure assets and troubleshoot transactions for your decentralized applications. Use our type-safe, easy-to-use yet powerful SDK to collect and transform data based on smart contracts' events, transactions, traces, and states. Collected data are versioned for fast and easy iteration. Build low-code, real-time dashboards in seconds with powerful transformation and aggregation functions. Visualize metrics and easily zoom in and out at different timespan. Set up real-time alerts to notify your team via Slack, Telegram, Email and webhook so you can react quickly to critical events. Emit structured logs that are searchable and can be referenced from real-time dashboards. Sentio's mission is to accelerate DApp proliferation by bringing the best and battle-tested developer tools, infrastructure and philosophy to the crypto world. Leave your email to receive updates about our launch and gain early access to our beta release.

A decentralized peer to peer work contract or payroll decentralized application. There are currently two kinds of pacts that can be made using ChainPact - Gig pact and Proposal Pact. Gig Pact enables anyone to create a freelancing agreement or employment contract on the blockchain. This is a time based contract, where the employer pays the agreed upon payment at agreed upon intervals. The contract acts as an escrow smart contract for the payment. Further, a fundraiser or a kickstarter type campaign on blockchain can be created using the Proposal pact smart contract. It allows the creator to specify a certain voting start time and duration. So contributors can vote at a later date whether to disburse the collected funds to the creator's chosen account or somewhere else (like refunded back to the contributors)

AstraKode Blockchain (AKB) is a low-code, web-based platform for enterprise blockchain solutions and smart contracts development, testing and deployment. The platform currently offers: The Network Composer, a guided visual IDE where users can design and easily configure a permissioned blockchain network (Hyperledger Fabric). At any point in time, users are also able to generate and download the network’s source code, which can then be either deployed locally or on distributed machines via automated scripts. Smart Contract IDE is a powerful tool that makes developing and deploying your blockchain application simple by creating a visual environment for smart contracts (Hyperledger Fabric, Solidity). This offers a higher level of abstraction, resulting in intuitive learning by doing. A Discord-hosted community for product and technology discussion and tutorials and a wiki linked to the platform for documentation and configuration guides foster open and responsive communication.

Substrate Developer Hub, Blockchain development for innovators. Substrate is a modular framework that enables you to create purpose-built blockchains by composing custom or pre-built components. Create the perfect custom blockchain for your enterprise. That’s why we’ve built Substrate, a technology that makes it quick and easy to build the perfect blockchain for your needs. Substrate builds upon the achievements from the major blockchain protocols, and uses the lessons learned to give developers the latest technology to build flexible blockchains. Not every blockchain is suitable for every network. With Substrate, you can mix and match features to suit your project's needs. Substrate's modular design means you can reuse battle-tested libraries while building the custom components that matter most. Substrate is powered by best-in-class cryptographic research and comes with peer-to-peer networking, consensus mechanisms, and much more.

Polkadot is a blockchain network being built to enable Web 3.0, a decentralized and fair internet where users control their own data and markets prosper from network efficiency and security. Polkadot was founded in 2016 by Gavin Wood, former Co-Founder and CTO of Ethereum. Polkadot’s technology addresses the major issues that have stymied blockchain adoption in recent years. Polkadot’s software development toolkit, Substrate, created by Parity Technologies, makes it easy for blockchain developers to build their own custom, fit-for-use blockchains. Polkadot also enables multiple blockchains to communicate between each other, allows for easy upgradeability, and introduces “shared security”, a plug-and-play network security model that allows developers to focus on the technology and avoid spending time and resources recruiting a set of operators to run a new blockchain.

Solidity is a statically-typed curly-braces programming language designed for developing smart contracts that run on Ethereum. As a relatively young language, Solidity is advancing at a rapid speed. We aim for a regular (non-breaking) release every month, with approximately one breaking release per year. You can follow the implementation status of new features in the Solidity Github project. You can see the upcoming changes for the next breaking release by switching from the default branch (`develop`) to the `breaking branch`. You can actively shape Solidity by providing your input and participating in the language design.

Vyper is a contract-oriented, pythonic programming language that targets the Ethereum Virtual Machine (EVM). Security: It should be possible and natural to build secure smart-contracts in Vyper. Language and compiler simplicity: The language and the compiler implementation should strive to be simple. Auditability: Vyper code should be maximally human-readable. Furthermore, it should be maximally difficult to write misleading code. Simplicity for the reader is more important than simplicity for the writer, and simplicity for readers with low prior experience with Vyper (and low prior experience with programming in general) is particularly important.

Unleash the power of blockchain AI with ChainGPT. An advanced AI model designed specifically for blockchain technology and crypto-related topics. It uses the latest algorithms and high-speed computing capabilities, to address challenging issues in the blockchain and crypto space. Using ChainGPT, users may quickly obtain whatever knowledge and information they require. With many other unique features designed for individuals, developers, and businesses, ChainGPT is an essential tool for all who are in the blockchain space. Blockchain & crypto information, no-code smart contract generator, smart-contract auditor, code debugger, code-to-words, documentation creator, chart analysis & technical analysis, AML features, blockchain analytics, on-chain live data, source of news, and much more. By creating the most advanced AI model, we are offering users an unlimited amount of use cases in which ChainGPT can be applied.

Ethereum is the community-run technology powering the cryptocurrency, ether (ETH) and thousands of decentralized applications. Ethereum is a technology that's home to digital money, global payments, and applications. The community has built a booming digital economy, bold new ways for creators to earn online, and so much more. It's open to everyone, wherever you are in the world – all you need is the internet. Today, billions of people can’t open bank accounts, others have their payments blocked. Ethereum's decentralized finance (DeFi) system never sleeps or discriminates. With just an internet connection, you can send, receive, borrow, earn interest, and even stream funds anywhere in the world. Today, we gain access to 'free' internet services by giving up control of our personal data. Ethereum services are open by default – you just need a wallet. Stake your ETH to become an Ethereum validator.

Build on Avalanche. Build without limits. Avalanche is an open, programmable platform for decentralized finance applications. Launch Ethereum dapps that confirm transactions instantly and process thousands of transactions per second, far beyond any decentralized blockchain platform today. Deploy blockchains that fit your own application needs. Build your own virtual machine and dictate exactly how the blockchain should operate. Stake, or lock up, your AVAX to help process transactions and further secure the platform–providing security guarantees well-above the 51% standard. You probably have the hardware required to join the platform. Avalanche is Solidity-compatible. All of your favorite tools like Remix, Truffle, and Tenderly work out of the box. Deploying smart contracts on Avalanche cost just a tenth of what they cost on Ethereum. High gas fees, front-running, and other adverse effects of slow smart contract blockchains are now a thing of the past.

Clarity brings smart contracts to Bitcoin. It is a decidable language, meaning you can know, with certainty, from the code itself what the program will do. Clarity is interpreted (not compiled) & the source code is published on the blockchain. Clarity gives developers a safe way to build complex smart contracts for the world's most secure blockchain. The Clarity language uses precise and unambiguous syntax that allows developers to predict exactly how their contracts will be executed. The Clarity language allows users to supply their own conditions for transactions that ensure that a contract may never unexpectedly transfer a token owned by a user. Contracts written in Clarity are broadcasted on the blockchain exactly as they are written by developers. This ensures that the code developers wrote, analyzed, and tested, is exactly what gets executed.