Coin Wallet is a non-custodial crypto wallet for Bitcoin
The AirGap Wallet is installed on an everyday smartphone
Self-custodial wallet for managing digital assets
A decentralized bitcoin exchange network
OpenZeppelin Contracts is a library for secure smart contracts
A payments protocol for the internet. Built on HTTP
Stellar's public monorepo of go code
Blockchain in C#/.NET for on-chain, decentralized gaming
Ephemeral web wallet for fast crypto cash
Bitcoin Alts portfolio tracker, email / text / alexa / telegram alerts
Advanced AI-Powered Python Crypto Trading Bot 2026 - Free Backtesting
Your entry point to the Waves blockchain and Waves-powered web service
A home for ethereum smart contracts
Mastering the Lightning Network (LN)
Grow Open Source
Cryptocurrency Payment Gateway - your payment processor
(Formerly Solium) Code quality & Security Linter for Solidity
An open source blockchain written from scratch in Python.