CLI to fetch and transform historical data from Subtrate-based chains

Interact with Substrate based nodes in Rust or WebAssembly

Crunch is a command-line interface (CLI) and Matrix Bot to claim staking rewards every Era for Substrate-based chains

Blockchain Indexing Engine

Promise and RxJS APIs around Polkadot and Substrate based chains via RPC calls. It is dynamically generated based on what the Substrate runtime provides in terms of metadata.

Runtimes for Polkadot community testnet

Central Library of Polkadot ecosystem

Thousand Validators Program backend.

The Parity Polkadot Blockchain SDK