Solidity, the Contract-Oriented Programming Language
C++ implementation of the Ethereum protocol
Dumps of CRoaring unity builds (for convenience)
Official Go implementation of the Ethereum protocol
The Ethereum Improvement Proposal repository
Fast Ethereum Virtual Machine implementation
Algorand's official implementation in Go.
Python framework for handling the stream of Algorand transactions
ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files.
Grammars written for ANTLR v4; expectation that the grammars are free of actions.
idiomatic codec and rpc lib for msgpack, cbor, json, etc. msgpack.org[Go]
The Ethereum Wiki
Aleth – Ethereum C++ client, tools and libraries
documents in progress
Ethereum Virtual Machine Assembler
Transcompiles EVM code to eWASM
Ethereum-Zcash Integration effort