Open Source TypeScript Blockchain Software
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TypeScript Blockchain Software
View 1056 business solutionsBrowse free open source TypeScript Blockchain Software and projects below. Use the toggles on the left to filter open source TypeScript Blockchain Software by OS, license, language, programming language, and project status.
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Build Agents and Models on One PlatformGemini Enterprise Agent Platform is Google Cloud's comprehensive platform for developers to build, scale, govern, and optimize agents and models. Choose from Google's most advanced models and third-party models like Anthropic's Claude Model Family.
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Earn up to 16% annual interest with Nexo.Generate interest, borrow against your crypto, and trade a range of cryptocurrencies — all in one platform. Geographic restrictions, eligibility, and terms apply.
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OneKey
Secure, open source and community driven crypto wallet
Secure, open source and community-driven crypto wallet runs on all platforms and trusted by millions. OneKey is your smartest choice to secure, buy, exchange and grow your crypto assets. Use OneKey App separately to store and use your crypto assets in a secure and convenient manner. Each user's assets are appropriately secured and stored locally. Hardware wallets take the security of digital assets to another level. From physically isolating hackers to preventing Trojan horses and software attacks. All transfers must be approved by the hardware wallet, so you don't have to worry about the loss or theft of your mobile phone. No matter what platform you prefer, iOS, Android, macOS, Windows, Linux or even ChromeOS, we support it all. Support for tokens on ETH, BSC and HECO chains. Open source and transparent, WYSIWYG. -
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Kalshi Trading Bot CLI
AI-native CLI for trading Kalshi prediction markets
Kalshi Trading Bot CLI is an AI-driven command-line tool designed to automate trading strategies on Kalshi prediction markets by combining quantitative modeling with real-time market data. It operates by conducting deep research on events, generating independent probability estimates, and comparing those estimates against current market prices to identify trading opportunities. The system incorporates advanced decision-making logic, including Kelly criterion-based position sizing and a structured multi-step risk evaluation process before executing trades. Built as a CLI application, it allows traders to interact programmatically with markets, making it suitable for automation and integration into larger trading pipelines. The tool emphasizes disciplined trading through its risk engine, ensuring that decisions are filtered through multiple validation layers before capital is committed. -
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Uniswap Labs Interface
An open source interface for the Uniswap protocol
An open-source interface for Uniswap -- a protocol for the decentralized exchange of Ethereum tokens. Developers, traders, and liquidity providers participate together in a financial marketplace that is open and accessible to all. Build Defi apps and tools on the largest crypto project on Ethereum. Get started with quick start guides, protocol documentation, a Javascript SDK, and fully open source code. Get paid to build the future of finance. Uniswap Governance offers grant funding for people building apps, tools, and activities on the Uniswap Protocol. To access the Uniswap Interface, use an IPFS gateway link from the latest release. You can block an entire list of tokens by passing in a tokenlist. The Uniswap Interface supports swapping, adding liquidity, removing liquidity and migrating liquidity for Uniswap protocol V2. -
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superfluid protocol-monorepo
Superfluid protocol specification, implementations and development kit
Superfluid is an asset streaming protocol that brings subscriptions, salaries and rewards to DAOs and crypto-native businesses. Settle employees and contributors compensation once and for all, without frictions or fees. Your tokens flow in a continuous stream to recipients, until you edit their compensation or choose to stop it. Create, modify or close streams in a single interface, even if the stream was started on other applications. The Superfluid Protocol is a framework that realizes the real-time finance vision where user accounts are connected together, and transactions can happen between user accounts instantaneously as a result. This repository implements the superfluid protocol as Ethereum contracts. It also contains a Javascript SDK for developing Web3 applications using the superfluid protocol. -
MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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wagmi
React Hooks for Ethereum
wagmi is a collection of React Hooks containing everything you need to start working with Ethereum. wagmi makes it easy to "Connect Wallet," display ENS and balance information, sign messages, interact with contracts, and much more, all with caching, request deduplication, and persistence. We create a wagmi Client and pass it to the WagmiConfig React Context. The client is set up to use the ethers Default Provider and automatically connect to previously connected wallets. Next, we use the useConnect hook to connect an injected wallet (e.g. MetaMask) to the app. Finally, we show the connected account's address with useAccount and allow them to disconnect with useDisconnect. First, configure your desired chains to be used by wagmi, and the providers you want to use. -
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Kohaku
Privacy-first tooling for the Ethereum ecosystem
Kohaku is an open-source initiative by the Ethereum Foundation aimed at bringing privacy-by-default tooling into the Ethereum ecosystem. It comprises an SDK of privacy primitives, a reference wallet implementation (browser extension), and a collaboration platform for existing wallet teams to adopt composable privacy building blocks. The project recognizes that privacy leaks in Ethereum go beyond just on-chain visibility — they include RPC endpoints exposing IPs, address reuse across dApps, and metadata captured by analytics or monitoring systems. Kohaku addresses privacy holistically: from local light-client verification (to reduce reliance on centralized RPCs) to per-dApp account isolation (so one user session cannot be correlated across services). It also integrates with existing privacy protocols (e.g., shielded transaction pools) and envisions long-term capabilities like post-quantum signatures, hardware wallet hooks, and minimal-trust data queries (TEE/ORAM or PIR). -
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Web3Modal
A single Web3 provider solution for all Wallets
Your on-ramp to web3 multichain. Web3Modal is a versatile library that makes it super easy to connect users with your Dapp and start interacting with the blockchain. v2 is in early alpha and we are continuously adding more features, examples and documentation. As of now we support use cases with react and evm chains. Support for more frameworks and chains is on the way. Getting started with web3modal is as easy as installing a few packages, one for your preferred front-end framework i.e. @web3modal/react and the chain ecosystem you are working with i.e web3modal/Ethereum. Head over to cloud.walletconnect to sign up and generate your projectId, which will be required to allow interactions with our explorer api, optional WalletConnect rpc provider and more v2 protocol features in the future. -
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Rainbow Ethereum
The Ethereum wallet that lives in your pocket
Rainbow is a fun, simple, and secure way to get started with crypto and explore the new world of Ethereum. You can use Rainbow to purchase, manage, and display Ethereum-based assets. Great for newcomers and power users alike, Rainbow allows you to be in total control of your money. Unlike a crypto exchange such as Coinbase, Rainbow doesn't hold your assets on your behalf. You own them directly thanks to the power of cryptography and the Ethereum blockchain. You can instantly send, receive, and trade assets from your crypto wallet whenever you want without having to worry that your funds might be held by a financial institution. With Rainbow, you can trade on Uniswap, the world's leading decentralized exchange (DEX), directly within the app. Buy ETH and DAI using Apple Pay + your debit card to get started quickly. Find trending tokens, top liquidity pools, and new assets in the Discover section. Use WalletConnect to login to decentralized apps. -
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Crypto Trading Bot
Cryptocurrency trading bot in javascript for Bitfinex
Crypto Trading Bot is a JavaScript cryptocurrency trading bot that connects to multiple exchanges through the CCXT ecosystem. It is designed to experiment with automated trading logic across exchanges such as Bitfinex, BitMEX, Binance, and Bybit. The bot supports multi-pair operation, technical indicators, configurable strategies, and exchange order workflows. It aims to go beyond basic buy-and-sell signal bots by supporting more practical trading mechanics such as stop-loss or stop-limit-style behavior where available. The project is explicitly not production-ready, so it should be treated as an educational and experimental trading framework rather than a safe financial automation system. It is useful for developers learning algorithmic trading architecture, exchange APIs, market data handling, and strategy testing. -
Go from Code to Production URL in SecondsSkip the Kubernetes configs. Cloud Run handles HTTPS, scaling, and infrastructure automatically. Two million requests free per month.
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Remix Project
Compiler and IDE that enables users to build Ethereum contracts
Remix Project is a rich toolset including Remix IDE, a comprehensive smart contract development tool. The Remix Project also includes Remix Plugin Engine and Remix Libraries which are low-level tools for wider use. Remix IDE is used for the entire journey of contract development by users of any knowledge level. It fosters a fast development cycle and has a rich set of plugins with intuitive GUIs. The IDE comes in 2 flavors and a VSCode extension. Supported browsers: Firefox v100.0.1 & Chrome v101.0.4951.64. No support for Remix's use on tablets or smartphones or telephones. The gh-pages branch of remix-live always has the latest stable build of Remix. It contains a ZIP file with the entire build. Download it to use offline. It contains the latest supported version of Solidity available at the time of the packaging. Other compiler versions can be used online only. -
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Hardhat
Hardhat is a development environment to compile, deploy, test
Hardhat is an Ethereum development environment for professionals. It facilitates performing frequent tasks, such as running tests, automatically checking code for mistakes or interacting with a smart contract. Check out the plugin list to use it with your existing tools. Hardhat Runner is the main component you interact with when using Hardhat. It's a flexible and extensible task runner that helps you manage and automate the recurring tasks inherent to developing smart contracts and dApps. Easily deploy your contracts, run tests and debug Solidity code without dealing with live environments. Hardhat Network is a local Ethereum network designed for development. Hardhat is the best choice for Solidity debugging. You get Solidity stack traces, console.log and explicit error messages when transactions fail. -
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The Ethers Project
Complete Ethereum library and wallet implementation in JavaScript
A complete Ethereum wallet implementation and utilities in JavaScript (and TypeScript). Keep your private keys in your client, safe and sound. Import and export JSON wallets (Geth, Parity and crowdsale) Import and export BIP 39 mnemonic phrases (12 word backup phrases) and HD Wallets (English as well as Czech, French, Italian, Japanese, Korean, Simplified Chinese, Spanish, Traditional Chinese. Meta-classes create JavaScript objects from any contract ABI, including ABIv2 and Human-Readable ABI. Connect to Ethereum nodes over JSON-RPC, INFURA, Etherscan, Alchemy, Ankr or MetaMask. ENS names are first-class citizens; they can be used anywhere an Ethereum addresses can be used. Tiny (~104kb compressed; 322kb uncompressed). Modular packages; include only what you need. Complete functionality for all your Ethereum desires. Extensive documentation. Large collection of test cases which are maintained and added. Fully TypeScript ready, with definition files. -
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ethereum.org website
Ethereum.org is a primary online resource for the Ethereum community
Ethereum is the community-run technology powering the cryptocurrency ether (ETH) and thousands of decentralized applications. ethereum.org is your portal into the world of Ethereum. The tech is new and ever-evolving, so it helps to have a guide. Here's what we recommend you do if you want to dive in. 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. -
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x402
A payments protocol for the internet. Built on HTTP
x402 is an open, HTTP-native payment protocol designed to enable programmatic, real-time payments directly within standard web requests. It repurposes the long-unused HTTP 402 “Payment Required” status code to allow servers to request payment before delivering content or API responses. The protocol supports multiple payment networks, including blockchain-based systems and fiat-compatible facilitators, making it flexible and network-agnostic. It is particularly suited for machine-to-machine transactions, such as AI agents paying for APIs, data, or compute resources without human intervention. The system eliminates the need for accounts, sessions, or traditional payment rails by using cryptographic authorization and wallet-based transactions. Developers can integrate payment requirements into endpoints with minimal code using middleware and SDKs. Overall, x402 introduces a new economic layer to the web, enabling micropayments and pay-per-use services natively over HTTP. -
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AirGap Vault
Installed on a smartphone that has no connection to any network
AirGap is a crypto wallet system that lets you secure cypto assets with one secret on an offline device. The AirGap Vault application is installed on a dedicated device that has no connection to any network, thus it is air-gapped. The AirGap Wallet is installed on your everyday smartphone. AirGap Vault is responsible for secure key generation. Entropy from audio, video, touch and accelerometer are used together with the output of the hardware random number generator. The generated secret is saved in the secure enclave of the device, only accessible by biometric authentication. Accounts for multiple protocols can be created. Transactions are prepared by the AirGap Wallet and then transferred to the offline device via QR code, where it is signed and sent back to the Wallet using another QR code. AirGap Vault is a hybrid application (using the same codebase for Android and iOS). -
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AirGap Wallet
The AirGap Wallet is installed on an everyday smartphone
AirGap is a crypto wallet system that lets you secure cypto assets with one secret on an offline device. The AirGap Vault application is installed on a dedicated device that has no connection to any network, thus it is air gapped. The AirGap Wallet is installed on your everyday smartphone. Protect your crypto and store your private keys offline. It’s time to set up your safe place for your coins and get rewards. Based on a two-device approach, increasing security and usability with you in the driver’s seat. Installed on a dedicated smartphone that is completely offline and has no connection to any network, thus it is air-gapped. The companion application to AirGap Vault installed on your every-day phone and not aware of any secrets. With the Exchange support in AirGap Wallet, swaps can be made directly in-App without having to transfer funds to an exchange and then creating an order. Seamlessly exchange Tezos, Ethereum, Bitcoin and æternity directly inside AirGap Wallet. -
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Iron Fish
A novel cryptocurrency focused on privacy and accessibility
Iron Fish is a privacy-first blockchain protocol that brings zero-knowledge proofs and encrypted transactions to a fully decentralized network. Its goal is to offer default, universal privacy for every user while remaining easy to use and scalable. Iron Fish uses zk-SNARKs to shield all transaction details and supports a novel PoS-like consensus called “Proof of Work with Delegation.” With its developer-friendly APIs and strong privacy guarantees, Iron Fish is designed to be the foundation for private financial infrastructure in the Web3 space. -
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0x Monorepo
0x protocol monorepo - includes our smart contracts
0x protocol monorepo, includes our smart contracts and many developer tools. 0x is an open protocol that facilitates the trustless, low-friction exchange of Ethereum-based assets. For more information on how it works, check out the 0x protocol specification. This repository is a monorepo including the 0x protocol smart contracts and numerous developer tools. Each public sub-package is independently published to NPM. Visit our developer portal for a comprehensive list of core & community-maintained packages. All packages maintained with this monorepo are listed. You will also need to have Python 3 installed, in order to build and run the tests of abi-gen's command-line interface, which is integrated with the yarn build, yarn test, and yarn lint commands described below. More specifically, your local pip should resolve to the Python 3 version of pip, not a Python 2.x version. -
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Coinbase Pro Trading toolkit
The Coinbase Pro trading toolkit
Provide all the tools traders need, both professional and hobbyist alike, to create automated trading bots on the Coinbase Pro and supported digital asset exchanges. Note: Node 7.6 or above is required. The src/samples folder contains many working demo scripts showcasing different aspects of the toolkit, while the tutorials folder contains running demo programs to accompany the CBPTT documentation. -
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EthereumJS Monorepo
Monorepo for the Ethereum VM TypeScript Implementation
This repository holds various protocol building blocks of the Ethereum blockchain execution layer and is managed by the Ethereum Foundation JavaScript team. There is a TypeScript implementation of the Ethereum Virtual Machine (EVM) ready to be used in Node.js or a browser environment, implementations of core structural blockchain building blocks like an Ethereum Tx, Block or Blockchain as well as a Trie (Merkle Patricia Tree) and devp2p (execution networking layer) implementation. All libraries are bound together by the core Common library keeping track of chain specifics and hardfork changes. They are complemented by helper packages like RLP for data encoding/decoding or Util, providing helper functionalities like (byte) conversion, signatures, types and others. Finally, the EthereumJS Execution Client (EthereumJS) has been in active development for some time now. It already serves a variety of purposes like testing, research (e.g. EIPs) and developer tooling. -
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Fuels‑TS
Fuel Network Typescript SDK
Fuels‑TS is a TypeScript SDK by FuelLabs for building decentralized applications on the Fuel blockchain. It provides tools for deploying and interacting with Sway smart contracts, managing wallets, crafting transactions, and initializing local development environments. Build forc workspace and generate Typescript types for everything. Built-in CLI for project bootstrap, build, deploy, dev server, and type generation. The primary license for this repo is Apache 2.0. Rich documentation including quickstart guides, cookbook, and API references. -
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Ganache Ethereum
A tool for creating a local blockchain for fast Ethereum development
Quickly fire up a personal Ethereum blockchain which you can use to run tests, execute commands, and inspect state while controlling how the chain operates. Quickly see the current status of all accounts, including their addresses, private keys, transactions, and balances. See the log output of Ganache’s internal blockchain, including responses and other vital debugging information. Configure advanced mining with a single click, setting block times to best suit your development needs. Examine all blocks and transactions to gain insight into what’s happening under the hood. Byzantium comes standard, giving you the latest Ethereum features needed for modern dapp development. -
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Gnosis Safe Contracts
Gnosis Safe allows secure management of blockchain assets
The most trusted platform to manage digital assets on Ethereum. Access the most recent version of the Safe directly in your browser. Download the Safe as a static desktop application for Windows, MacOS or Linux. Conveniently manage your digital assets on the go. Fully customize how you manage your company crypto assets, with the option to require a predefined number of signatures to confirm transactions. Require multiple team members to confirm every transaction in order to execute it, which helps prevent unauthorized access to company crypto. Fully customize how you manage your personal crypto assets, with the option to require multiple devices to confirm transactions (hardware wallets, EOA-based wallets, paper wallets, or a combination of them). Safe supports ETH, ERC20 (Tokens) and ERC721 (NFTs). You can also see the fiat values of your assets. -
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Keeper Wallet
Your entry point to the Waves blockchain and Waves-powered web service
High-security wallet with swapping capabilities. Keeper Wallet is your entry point to the Waves blockchain and Waves-powered web services. Seed phrases and private keys are encrypted and stored within the extension and cannot be accessed by online dApps and services, making sure that users' funds are always protected from hackers and malicious websites. Completion of a transaction doesn't require entering any sensitive information. Keeper Wallet is designed for convenience, so users can sign transactions with just one click. Users can create multiple wallets and switch between them easily. And if a user ever forgets the password to the account, it can be recovered from the seed phrase. Scan the QR code with a camera for authentication and your wallet is connected. This basic action opens up limitless opportunities on the Waves blockchain and potentially on any other chain supporting Keeper accounts. -
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Mask Network
The portal to the new, open Internet
Mask Network brings privacy and benefits from Web3 to social media like Facebook & Twitter - with an open-sourced browser extension. Use the Mask Extension to hide your content from prying eyes and allow only your target audience to see it. If you’re launching a new project on the Ethereum, BSC, Polygon, or Arbitrum networks, ITOs are a completely new way of launching decentralized assets fairly. With integrated widgets on social media platforms, you’ll be able to view the latest prices of crypto assets without leaving the page. Powered by Uniswap, SushiSwap, Ox, and dHEDGE. Got a BAYC or a Punk? Get your profile pictures verified on-chain. For free. Aggregate your digital activities, including NFTs, POAPs, donation records, etc - all in one place. Anonymized or not, that’s completely up to you.
