Our greatest asset as Bitcoiners is the thriving open source community that makes this move possible. Open source software empowers individuals around the world while remaining independent from governments and big corporations that constantly try to track, censor and control us. Many of these projects are not for profit and do not have large budgets to support them. Instead, they rely on an ever-growing network of individuals around the world who contribute time and energy to build them up, often without compensation. So, how can those of us who support Bitcoin help support the necessary work of these projects? With Bitcoin 2022, for example, our goal has been to host the largest Bitcoin-focused event in history that is both accessible and welcoming to newcomers, while staying true to the Bitcoin and open-source ethos (disclaimer: Bitcoin 2022 is operated by BTC Inc, which also operates Bitcoin Magazine). With this mission in mind, it’s clear that we should support open-source contributors and projects however we can. For us, this effort started with a dedicated conference room at our event that focused solely on open source projects and the importance of free and open source software (FOSS). In October, we launched our free open-source ticketing program, providing $1 million in conference passes to open-source contributors to select projects. We’ve since added 24 additional projects that are now eligible for the free open-source tickets program. The 30 highlighted projects below are, in our opinion, some of the most critical to Bitcoin’s progress. Readers should consider supporting these projects in their own way, and those who committed to their open-source codebase before October 1, 2021 can verify those commitments and request a free four-day pass to Bitcoin 2022 here. (The projects below are in alphabetical order.)1. BisqA decentralized bitcoin exchange that allows you to trade bitcoin for dollars, euros or shitcoins directly with another person without providing intimate personal information to an exchange. Bitcoin Beach Wallet A community oriented wallet with a simple interface that relies on a multisig custodian with keys held by trusted community members.3. Bitcoin CoreThe reference client and backbone of the bitcoin network – both a node and a wallet.4. Blixt WalletA powerful yet easy-to-use Lightning wallet available on Android and iOS.5. Blue Wallet A powerful mobile wallet available on both Android and iPhone that is both easy to use and has powerful user features including multisig.6. Braiin’s OSA custom firmware that gives users greater control over their bitcoin mining ASICs, including a more profitable return on investment.7. Breez Wallet An easy-to-use Lightning wallet available on Android and iPhone with podcasting 2.0 and point-of-sale capabilities.8. BTCPay ServerA point of sale system that allows users to easily and reliably accept bitcoin for goods and services.9. C-LightningOne of the main Lightning implementations, which uses plugins to give you extra features and control.10. EclairA mobile-centric Scala-based Lightning implementation.11. ElectrsAn easy and performant way to run your own Bitcoin node with a variety of wallets and tools. Electra is built into most dedicated full-node implementations.12. ElectrumA powerful desktop wallet that can be used in a variety of ways, including hardware wallets, multisig, and Lightning.13. ImmortanA minimal, privacy-focused, idiosyncratic implementation of Lightning Network protocols specifically intended to power Lite Lightning nodes, usually found on mobile phones or desktop computers and running private channels only.14. JoinMarket A decentralized CoinJoin implementation that provides users with additional privacy by constructing collaborative transactions without a centralized server.15. LDKA library that lets you build a Lightning node without worrying about correctly implementing low-level Lightning logic. LDK is based on Rust-Lightning, a fully featured yet incredibly flexible Lightning implementation, so you can decide how you want to use it.16. LNBitsA platform that makes it easy to integrate Lightning in the most diverse situations.17. LNDThe most popular Lightning Network implementation currently available.18. MempoolA direct view of the current status of the Bitcoin network that can be easily used with your own node.19. Mercury Wallet A privacy-focused wallet that uses a concept called statechains to allow users to trade bitcoin off-chain with minimal fees.20. Muun Wallet An extremely easy-to-use mobile wallet on both Android and iPhone that works with both traditional bitcoin payments and Lightning.21. Nix-BitcoinA collection of Nix packages and NixOS modules for easily installing fully-featured Bitcoin nodes with an emphasis on security.22. NodlA powerful yet easy to use 24/7 Bitcoin node. 23. RaspiBlitzA full node Bitcoin implementation that makes using Lightning and JoinMarket.24 easy. RoninDojoA full node Bitcoin implementation that supports Electrum and easy Samourai wallet integration via QR code and Tor.25. Samourai Wallet A privacy-focused Android wallet that makes it easy to use collaborative transactions to improve privacy in the chain. Samourai also makes it easy to use your own node with a QR code linking process and Tor.26. SeedSignerA hardware wallet with a screen and camera that you can build yourself for about $50. If you want a bigger screen and smart card support, you can build a Specter into a DIY device for about $250.27. Sparrow Wallet A full featured desktop wallet compatible with Electrum servers. It works with all major hardware wallets, including multisig configurations, and has built-in support for PayNym, PayJoin, and Whirlpool CoinJoin.28. Specter WalletA desktop wallet that makes it easy to use any hardware wallet with your own node, including multisig configurations.29. TorA network aimed at preventing surveillance and censorship often used by Bitcoin projects.30. Zeus The easiest way to interact with your own Lightning full node on Android and iPhone.