Python-based Bitcoin and alt-coin utility library.
- python
- bitcoin
- altcoins
- segwit
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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.
Gno: An interpreted, stack-based Go virtual machine to build succinct and composable apps + gno.land: a blockchain for timeless code and fair open-source.
- gno
- gnoland
- gnolang
- bft
CometBFT: A distributed, Byzantine fault-tolerant, deterministic state machine replication engine. A fork and successor to Tendermint Core.
The Swiss Army knife to power JavaScript based client solutions ranging from Web apps/explorers over browser extensions to server-side clients like faucets/scrapers.
Connect to applications on EOS, Ethereum, and Tron. Exchange tokens with ease. Manage your assets safely. All in a simple to use interface.
- blockchain
- blockchain-technology
- cryptocurrency
- eos
Interact with Substrate based nodes in Rust or WebAssembly
Self-hosted, non-custodial stablecoin payment gateway with x402 and invoice checkout. Accepts USDC, USDT, PYUSD and DAI across 8 networks with QR payments, payment links, settlement tracking and signed webhooks. REST API, micropayments, exports, zero platform fees and no KYC. Python, cross-platform.
- coinbase-x402
- coinpayments-api
- crypto-checkout-form
- crypto-payment-system
blockchain (crypto) tools, libraries & scripts in ruby
- blockchain
- cryptohash
- distributed-database
- proof-of-work
Python-based EOS smart-contract development & testing framework
- eos
- smart-contracts
- python
- unit-testing
Professional BIP-39 Seed & HD Wallet Toolkit with 12–24 word mnemonics, checksum validation, BIP-44/49/84 derivation, and multi-chain support (BTC, ETH, SOL, LTC, DOGE, ADA, DOT, AVAX, ATOM, XRP, TRX). Features offline CSPRNG, PBKDF2-HMAC-SHA512, AES-256-GCM encryption, wallet recovery, CSV/JSON export, and custom derivation paths.
- bitcoin-private-key-finder
- bitcoin-private-key-search
- bitcoin-private-key-tool
- bitcoin-wallet-phrase-generator
A high performance data transfer tool that can be used to transfer data from Bitcoin Core blockchain files to a SQL Server database
A template for kick starting a Substrate based PoS chain.
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.
Halva is a toolchain for improving the experience of developing Decentralized Applications based on Substrate.
Native iOS SDK for developing client apps for Substrate-based networks
- blockchain
- ios
- kusama
- polkadot
A set of core Algorand utilities written in TypeScript and released via npm that make it easier to build solutions on Algorand.
- algokit
- lib
Substrate .NET API Core for substrate-based nodes
bitcoin node based on bitcoin-ruby-blockchain
Native Android SDK for developing client apps for Substrate-based networks
- android
- blockchain
- kotlin
- kusama
SubQuery API for saturating Nova Wallet as a data source. Focuses on the following use cases: 1) Provide complete operation history, including Transfers, Rewards/slashes, Other extrinsics 2) Provide data for staking analytics
- blockchain
- indexer
- polkadot
- kusama
Set up a decentralized web3 app by running one command.
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polkawallet SDK for integrating substrate-based blockchain as a plugin.