Polkadot's ink! to write smart contracts.
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Web3 Foundation Grants Program
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.
Simple browser extension for managing Polkadot and Substrate network accounts in a browser. Allows the signing of extrinsics using these accounts. Also provides a simple interface for compliant extensions for dapps.
Substrate Open Runtime Module Library
Library for connecting to substrate API over WebSockets
Python Polkadot SDK
Polkadot Substrate Explorer Subscan
Substrate RPC client for go aka GSRPC
Blockchain Indexing Engine
Central Library of Polkadot ecosystem
A sandbox to run and debug smart contracts for FRAME Contracts pallet and also a sandbox framework for Substrate runtime.
[WIP] RMRK Substrate pallets
Subwasm is a cli utility to look inside a Substrate WASM Runtime. It can inspect and compare the metadata of Substrate based runtimes such as Polkadot or Kusama.
Python SCALE-Codec
Wasm smart contract networks powered by Substrate FRAME Contracts pallet in Polkadot ecosystem.
A Substrate indexing framework
Metadata & configs for client apps in Polkadot & Kusama ecosystem
a compact graph indexer stack for parity substrate, polkadot, kusama
Native iOS SDK for developing client apps for Substrate-based networks
JavaScript SDK for Subsocial blockchain.
Substrate .NET API Core for substrate-based nodes
Native Android SDK for developing client apps for Substrate-based networks
Virto toolset to build simple to use decentralized applications