Showing 227 open source projects for "contract"

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  • 1
    Node.js Testing Best Practices

    Node.js Testing Best Practices

    Beyond the basics of Node.js testing

    This repository narrows the testing lens to Node.js backends, focusing on the challenges of servers, microservices, and cloud-native deployments. It covers API testing, contract testing, and persistence-layer strategies that avoid coupling tests to fragile implementation details. The material explains how to structure tests around process boundaries—HTTP, queues, cron jobs—while keeping fast feedback cycles through selective integration tests and reliable test doubles. It dives into topics like test containers, ephemeral databases, and idempotent fixtures to ensure deterministic runs in CI. ...
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  • 2
    ink-kit

    ink-kit

    Onchain-focused SDK with ready-to-use templates and themes

    ink-kit is a developer toolkit for building applications on the INK blockchain ecosystem, bundling the pieces you typically need to go from a blank repo to a working dapp. It provides contract templates, deployment scripts, and client SDKs so you can iterate on on-chain logic and a frontend without stitching together disparate tools. The kit standardizes project layout and environment configuration, making local development, testing, and staging deploys predictable. Utilities for wallet connection, signing, and basic indexing help you focus on business logic rather than bootstrapping. ...
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  • 3
    RealWorld

    RealWorld

    Exemplary fullstack Medium.com clone powered by React, Angular, Node

    ...The same spec is realized dozens of times (React, Vue, Svelte, Angular, Solid, Next, Remix, and many more), alongside multiple server implementations, so learners can compare idioms without guessing about feature gaps. A shared API contract and test suite keep implementations consistent and reveal framework-specific tradeoffs clearly. This makes the repo a powerful teaching tool for architecture, state management, testing, and deployment patterns at production scale. Teams also use it to evaluate new frameworks by building “yet another RealWorld” and measuring DX, bundle size, and maintainability.
    Downloads: 0 This Week
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  • 4
    Claude of Duty

    Claude of Duty

    A Call of Duty-quality FPS in Three.js, built from a single prompt

    ...The playable market environment includes enterable interiors, instanced props, atmospheric effects, intense combat feedback, and modern shooter controls. The repository also includes deterministic screenshot testing, image-difference checks, profiling, scripted playtests, and an architecture contract used to coordinate the agents.
    Downloads: 31 This Week
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  • 5
    Pejota

    Pejota

    The ERP and CRM, multi language, for freelancers

    PeJota is a Freelancer/solo entrepreneur‑focused ERP/CRM built on PHP/Laravel with FilamentPHP UI. It includes client/project/contracts/tasks/timesheets and invoice management in a lightweight monolithic app, ideal for multilingual SMB use.
    Downloads: 0 This Week
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  • 6
    tilemaker

    tilemaker

    Make OpenStreetMap vector tiles without the stack

    Create the vector tiles on your home machine or using a cloud CPU. Upload the file to your site or app. And that's it. No database to maintain; no contract to pay; and no restriction on commercial use. tilemaker is a single executable that takes OpenStreetMap data and makes it into vector tiles. It's supremely customizable, but if you just want off-the-shelf tiles in a standard style, tilemaker comes bundled with the files to do that too. With tilemaker, you can pull out any facet of OpenStreetMap's rich data. ...
    Downloads: 13 This Week
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  • 7
    CCXT

    CCXT

    JavaScript/TypeScript/Python/C#/PHP cryptocurrency trading API

    The ccxt library is a collection of available crypto exchanges or exchange classes. Each class implements the public and private API for a particular crypto exchange. All exchanges are derived from the base Exchange class and share a set of common methods. To access a particular exchange from ccxt library you need to create an instance of corresponding exchange class. Supported exchanges are updated frequently and new exchanges are added regularly.
    Downloads: 4 This Week
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  • 8
    Fuels-rs

    Fuels-rs

    Fuel Network Rust SDK

    fuels-rs is a Rust-native Software Development Kit (SDK) for the Fuel blockchain. It facilitates compilation, deployment, transaction crafting, contract interaction, and testing of Sway smart contracts, as well as launching and controlling local Fuel nodes for development or CI workflows.
    Downloads: 0 This Week
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  • 9
    ContextGem

    ContextGem

    ContextGem: Effortless LLM extraction from documents

    ...It provides a flexible, intuitive API that minimizes boilerplate code, enabling developers to build complex extraction workflows efficiently. ContextGem supports various document formats and integrates with multiple LLM providers, making it a versatile tool for tasks like contract analysis, anomaly detection, and information retrieval.​
    Downloads: 1 This Week
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  • 10
    Cardano Node

    Cardano Node

    The core component that is used to participate in a Cardano

    Cardano Node is the core software that powers the Cardano blockchain, a decentralized, proof-of-stake platform for smart contracts and digital assets. Developed in Haskell, the node allows participation in Cardano’s network by validating transactions, producing blocks, and maintaining the ledger. It supports Shelley, Goguen, Basho, and other phases of Cardano’s roadmap, and plays a crucial role in network security and consensus. The node is configurable for different use cases, including...
    Downloads: 0 This Week
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  • 11
    Node (Base Node)

    Node (Base Node)

    Everything required to run your own Base node

    node is the Ethereum Layer 2 full node implementation developed for the Base network, a secure and scalable L2 chain built on the OP Stack. Designed to support Base’s rollup protocol, the node syncs L2 data, validates transactions, and interacts with Ethereum mainnet. It enables developers and validators to run their own Base-compatible infrastructure while contributing to decentralization and performance.
    Downloads: 0 This Week
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  • 12
    eve

    eve

    The Framework for Building Agents

    eve is Vercel’s open-source framework for building, running, and scaling durable backend AI agents. It uses a filesystem-first model where an agent is defined as a directory of files, making the project structure itself the agent contract. The framework is designed to include production concerns from the start instead of leaving developers to assemble durability, sandboxing, approvals, and deployment separately. Eve supports durable execution, sandboxed compute, human-in-the-loop approvals, subagents, long-running work, and Vercel-native deployment. It also fits into agent templates and app workflows, such as Slack agents or persisted chat experiences. ...
    Downloads: 2 This Week
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  • 13
    MultiversX Chain

    MultiversX Chain

    The official implementation of the MultiversX blockchain protocol

    mx-chain-go is the core implementation of the MultiversX (formerly Elrond) blockchain protocol, developed in Go to provide a highly scalable, secure, and decentralized infrastructure for Web3 applications. It implements Adaptive State Sharding and Secure Proof-of-Stake (SPoS) to achieve fast transaction speeds and efficient consensus. This implementation powers the MultiversX mainnet and supports advanced features like smart contracts, meta-transactions, and economic models suited for DeFi...
    Downloads: 1 This Week
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  • 14
    conflux-rust

    conflux-rust

    The official Rust implementation of Conflux protocol

    conflux-rust is the Rust implementation of Conflux, a high-performance Layer 1 blockchain designed to deliver high throughput without compromising decentralization or security. Conflux introduces a Tree-Graph consensus mechanism that allows parallel block processing while maintaining consensus integrity. This implementation focuses on performance and is compatible with the Ethereum Virtual Machine (EVM), enabling developers to deploy smart contracts written for Ethereum. It provides a robust...
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  • 15
    OpenDAN

    OpenDAN

    OpenDAN is an open source Personal AI OS

    OpenDAN is an open-source Personal AI OS , that consolidates various AI modules in one place for your personal use. The goal of OpenDAN (Open and Do Anything Now with AI) is to create a Personal AI OS , which provides a runtime environment for various Al modules as well as protocols for interoperability between them. With OpenDAN, users can securely collaborate with various AI modules using their private data to create powerful personal AI agents, such as butlers, lawyers, doctors, teachers,...
    Downloads: 2 This Week
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  • 16
    HiClaw

    HiClaw

    An open source collaborative multi-agent OS

    HiClaw is an AI-powered legal assistant framework developed within the AgentScope ecosystem to support intelligent legal reasoning, document analysis, and workflow automation for legal research and compliance tasks. The project combines large language models with agent orchestration systems to process legal documents, interpret regulations, summarize contracts, and assist with legal knowledge retrieval. It is designed to provide structured, explainable workflows that help legal professionals...
    Downloads: 1 This Week
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  • 17
    Claude for Legal

    Claude for Legal

    A suite of plugins for legal workflows

    ...The project can run as a Claude plugin or through Claude’s Managed Agents API, giving teams flexibility in how they deploy the same prompts and skills. Its workflows include contract review, NDA triage, diligence review, DSAR response, employment policy drafting, trademark screening, regulatory monitoring, and litigation support. The repository emphasizes attorney oversight, source attribution, jurisdiction awareness, conservative legal assumptions, and approval gates before anything is filed, sent, or relied on.
    Downloads: 0 This Week
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  • 18
    Solang

    Solang

    Solidity Compiler for Solana, Polkadot and Stellar

    Solang is a modern Solidity compiler written in Rust that enables developers to compile smart contracts for multiple blockchain platforms beyond Ethereum, such as Solana, Polkadot, and Soroban. Unlike the traditional Solidity compiler, which targets the Ethereum Virtual Machine, Solang focuses on portability by translating Solidity code into native execution environments for different blockchains. It uses the LLVM compiler framework to generate optimized output, often producing WebAssembly...
    Downloads: 0 This Week
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  • 19
    Halite

    Halite

    High-level cryptography interface powered by libsodium

    ...Commercial licenses are available from Paragon Initiative Enterprises if you wish to extend Halite without making your derivative works available under the terms of the MPL. If you are satisfied with the terms of MPL software for backend web applications but would like to purchase a support contract for your application that uses Halite, those are also offered by Paragon Initiative Enterprises.
    Downloads: 0 This Week
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  • 20
    Shepherd

    Shepherd

    Runtime substrate that turns agent's execution into a Git-like trace

    ...Each result can be reviewed, executed separately, selected, merged, released, or discarded. Tasks are declared as Python functions whose signatures and documentation define the agent contract and required resources. Read-only and read-write repository grants are enforced through native operating-system sandboxing on supported macOS and Linux environments. Runs can be forked, replayed, reverted, and supervised, enabling counterfactual experiments, optimization, and training workflows. Shepherd also retains machine-readable records and supports offline deterministic examples, but its APIs may change while the project remains in alpha.
    Downloads: 0 This Week
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  • 21
    LiquidHaskell

    LiquidHaskell

    Liquid Types For Haskell

    ...LiquidHaskell (LH) refines Haskell's types with logical predicates that let you enforce important properties at compile time. LH warns you that head is not total as it is missing the case for [] and checks that it is total on NonEmpty lists. The input contract propagates to uses of head which are verified by ensuring the arguments are NonEmpty. LH lets you avoid off-by-one errors that can lead to crashes or buffer overflows. Dependent contracts let you specify, e.g. that dotProduct requires equal-sized vectors. LH checks that functions terminate and so warns about the infinite recursion due to the missing case in fib.
    Downloads: 0 This Week
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  • 22
    Brownie

    Brownie

    A Python-based development and testing framework for smart contracts

    Brownie is a Python-based development and testing framework for smart contracts targeting the Ethereum Virtual Machine. Powerful debugging tools, including python-style tracebacks and custom error strings. The recommended way to install Brownie is via pipx. pipx installs Brownie into a virtual environment and makes it available directly from the command-line. Once installed, you will never have to activate a virtual environment prior to using Brownie. Brownie documentation is hosted at Read...
    Downloads: 0 This Week
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  • 23
    The Ethers Project

    The Ethers Project

    Complete Ethereum library and wallet implementation in JavaScript

    ...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. ...
    Downloads: 1 This Week
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  • 24
    bitcoinj

    bitcoinj

    A library for working with Bitcoin

    bitcoinj is a library for working with the Bitcoin protocol. It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features. It's implemented in Java but can be used from any JVM compatible language, examples in Python and JavaScript are included. Highly optimized lightweight simplified payment verification (SPV) mode. In this mode, only a small part of the blockchain is downloaded, making bitcoin suitable for usage on...
    Downloads: 1 This Week
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  • 25
    Trail of Bits Skills Marketplace

    Trail of Bits Skills Marketplace

    Trail of Bits Claude Code skills for security research, vulnerability

    Trail of Bits Skills Marketplace is a specialized Claude Code skills marketplace built by the security research firm Trail of Bits that focuses on enhancing AI-assisted workflows for vulnerability discovery, testing, and secure development. The repository groups a set of plug-in skills tailored toward static analysis, code auditing, secure defaults detection, and other practices that matter in software security. Users can easily add the marketplace to a Claude Code environment, browse...
    Downloads: 0 This Week
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