Padawan is a testnet-only bitcoin wallet trainer on Android. It aims to be a self-study tool, getting its users acquainted with the usual workflow and basic jargon of mobile wallets in a risk-free environment perfect for experimentation and learning.

The Bitcoin Dev Kit is a modern, lightweight, descriptor-based wallet library written in Rust.

Breez SDK provides developers with a end-to-end solution for integrating self-custodial Lightning payments into their apps and services. It eliminates the need for third-parties, simplifies network complexities, and enables seamless onboarding for billions of users to the future of P2P payments.

This issue describes a distributed key generation protocol for the FROST scriptless threshold signature scheme and links to a comprehensive introduction to cluster linearization.

Bitcoin Search is a search engine for exploring the "depths of Bitcoin's technical ecosystem."

Lightning.Pub is a Nostr-native account system designed to make running Lightning infrastructure for your family and customers "easier than previously thought possible." ShockWallet is the first wallet to use Nostr based accounts for Lightning Network connections.

Nutsack is a highly experimental NIP-60/61 client for a "wallet that lives in nostr and can be accessed from any nostr client that chooses to implement it."