GrapheneOS
by GrapheneOS Foundation · via the General Fund
A hardened mobile operating system focused on privacy, security, and Android app compatibility.
Project Showcase
Below is a showcase of various projects we are funding or have funded in the past. Please keep in mind that the list is not exhaustive. For the full list, see our grant announcements.
Infrastructure
Operating systems, anonymity networks, and secure networking.
The Tor Project
by The Tor Project · via the General Fund
Free software and open networks for online privacy, anonymity, and censorship resistance.
WireGuard
by Jason A. Donenfeld · via the General Fund
A lean VPN protocol and software suite for secure networking across servers, phones, and desktops.
Protocol Maintenance & Development
Full nodes, validation, and core protocol work.
ASmap
by ASmap Contributors · via the General Fund
A project that builds reproducible IP-to-AS maps for Bitcoin Core so nodes can diversify peers across autonomous systems.
Bitcoin Core
by Bitcoin Core Developers · via the General Fund
The full node software that validates the chain, relays transactions, and enforces Bitcoin’s rules.
Floresta
by Davidson Souza · via the General Fund
An embeddable Bitcoin client in Rust that validates every block using Utreexo.
libbitcoin
by pmienk · via the General Fund
A modular C++ Bitcoin toolkit with an alternative full node, server, explorer, and supporting libraries.
utreexod
by Calvin Kim · via the General Fund
A fully validating Bitcoin node and bridge node implementation of the Utreexo protocol.
Education & Research
Projects that bring in the next wave of contributors.
Bitcoin Design Community
by Christoph Ono · via the General Fund
Design resources for teams building better Bitcoin products.
Bitshala
by Rajarshi Maitra · via the General Fund
A grassroots education initiative training open-source Bitcoin developers in India.
Satoshi Nakamoto Institute
by Michael Goldstein · via the General Fund
A nonprofit archive and publishing project dedicated to preserving Bitcoin history and ideas.
Summer of Bitcoin
by Adi Shankara · via the General Fund
A global internship program for student Bitcoin contributors.
Privacy
Wallet and payment tools built to make privacy best practices easier and more user-friendly.
Dana Wallet
by cygnet3 · via the General Fund
A mobile Bitcoin wallet built around silent payments, BIP353 addresses, and local scanning for private on-chain receiving.
Mostro
by Francisco Calderón · via the Nostr Fund
A non-custodial peer-to-peer Bitcoin exchange on Lightning and nostr with federated nodes and open clients.
Payjoin Dev Kit
by Dan Gould · via the General Fund
The Rust library for Payjoin, with bindings for Python, Dart, Swift, Kotlin, JavaScript, and C#.
Mining
Mining protocols and infrastructure.
Stratum V2
by StratumV2 · via the General Fund
An open mining protocol that gives individual miners more control over block construction.
Lightning
Lightning protocols, security, and infrastructure.
Validating Lightning Signer
by devrandom and contributors · via the General Fund
A hardware-friendly Lightning signing stack that keeps private keys off the Lightning node itself.
Developer Tooling & Testing
Libraries, kits, and workflow tools engineers use to build and ship.
Bitcoin Dev Kit
by BDK Foundation · via the General Fund
A modern, descriptor-based wallet library written in Rust.
Bitcoin Research Kit
by nym21 · via the General Fund
A self-hostable Bitcoin analytics stack that indexes chain data, computes metrics, serves an API, and powers the public Bitview instance.
bitcoinfuzz
by Bruno Garcia · via the General Fund
A differential fuzzing framework for Bitcoin protocol implementations and libraries.
rust-bitcoin
by rust-bitcoin Maintainers · via the General Fund
A low-level Rust Bitcoin library stack for protocol messages, transactions, scripts, keys, addresses, and PSBTs.
Wallets
Self-custody software built for everyday use.
Blitz Wallet
by Blake Kaufman · via the General Fund
A self-custodial Bitcoin wallet on Spark, with easy onboarding from custodial to self-custody.
Blixt Wallet
by Hampus Sjöberg · via the General Fund
A non-custodial Lightning wallet that runs a full LND node on your phone.
Cove
by Praveen Perera · via the General Fund
A Bitcoin-only mobile wallet built on BDK with strong hardware wallet support.
Merchant Tooling & Payments
Payments, point-of-sale, and merchant tooling on Lightning.
BTCPay Server
by BTCPay Server Foundation · via the General Fund
A self-hosted, open-source Bitcoin payment processor with no fees and no third parties.
LNbits
by LNbits Contributors · via the General Fund
A modular Lightning wallet account system with a plugin framework, used as the payments layer for shops, kiosks, hardware projects, and online services.
Chaumian ecash
Ecash wallets and mint software on Cashu.
Cashu
by Cashu Contributors · via the General Fund
A Chaumian ecash protocol built for Bitcoin that brings near-perfect privacy to custodial payments.
Cashu Dev Kit
by thesimplekid · via the General Fund
A modular Rust toolkit for building Cashu wallets and mints.
Minibits
by Misovan · via the General Fund
A mobile Cashu wallet for Android and iOS, with Lightning, nostr, and offline token transfers.
OpenCash
by OpenCash Association · via the General Fund
A Swiss nonprofit funding the development of open-source ecash systems built on Bitcoin.
Nostr Clients
How people read and post on nostr today.
0xchat
by water783 · via the Nostr Fund
A secure nostr chat client for iOS, Android, and desktop with encrypted DMs, groups, calls, and payments.
Amethyst
by Vitor Pamplona · via the Nostr Fund
A privacy-focused nostr client for Android with built-in Tor support.
Coracle
by Hodlbod · via the Nostr Fund
A web-based nostr client focused on relay management and web of trust.
Damus
by William Casarin · via the Nostr Fund
A nostr client for iOS with Lightning zaps, relay transparency, and web-of-trust filtering.
Flotilla
by Hodlbod · via the Nostr Fund
A Discord-like nostr client built around the idea of "relays as groups," with chat, threads, events, voice rooms, and white-labeled instances.
Soapbox
by Alex Gleason · via the Nostr Fund
Open-source software making nostr the best place to build and create on the social web.
Nostr Developer Tooling
SDKs and tools for building on nostr.
Applesauce
by hzrd149 · via the Nostr Fund
A modular TypeScript SDK for building nostr web clients, extracted from noStrudel.
NDK
by PabloF7z · via the Nostr Fund
A modular TypeScript toolkit for building nostr applications, with first-class outbox-model support and reactive UI bindings for Svelte and React.
ngit
by DanConwayDev · via the Nostr Fund
A git plugin and remote helper that puts repository state, pull requests, and issues on nostr, with normal git servers used as the data store.
Nostr Infrastructure
Relays, signers, and core infrastructure for nostr.
Amber
by Greenart7c3 · via the Nostr Fund
A nostr signer for Android that keeps the nsec in one app and signs events for every other client over NIP-46.
Citrine
by Greenart7c3 · via the Nostr Fund
A nostr relay that runs on your Android phone, used as a local cache and a private write target by other clients on the same device.
Frostr
by Austin Kelsay and cmdruid · via the Nostr Fund
A FROST-based threshold signing protocol for nostr with libraries and clients for multi-device keys.
Zapstore
by Franzap · via the Nostr Fund
A nostr-based app store for signed releases, open discovery, and censorship-resistant software distribution.