soffes/Countdown

BitChat is a mesh chat app for iOS and macOS that routes messages over Bluetooth LE when you're offline and falls back to the Nostr protocol when you have signal, with no phone number, account, or central server involved. It's built for people who want to text nearby without cell service — a protest, a festival, a dead zone — and its own whitepaper is upfront about where the privacy model still has gaps, like a persistent per-device identifier and store-and-forward messages that skip forward secrecy.

Flutter is Google's open-source SDK, hosted at flutter/flutter on GitHub, for building user interfaces across mobile, web, and desktop from a single Dart codebase. The repo has 178,380 stars and 30,962 forks, is licensed BSD-3-Clause, and its README documents stateful hot reload, a Skia/Impeller rendering pipeline, and Material/Cupertino widget sets as the core pieces developers work with.

Free Programming Books (Chinese) is justjavac's GitHub index of free programming books, translated manuals, and course notes in Chinese, organized under headings like AI, Go, C/C++, and version control, with 118,080 stars and 28,234 forks. It's a link list, not a curriculum - entries range from full book translations to single blog posts, some flagged `:worried:` for dead links, and contribution happens only through pull requests.

Pake is a utility that converts any webpage into a cross-platform desktop application using a single command. It relies on Rust and Tauri, which the README states results in installer sizes typically under 10MB and lower memory usage compared to Electron-based alternatives. Users can package websites via a command-line interface, an online builder, or download pre-built applications for services like ChatGPT, YouTube, and Notion. The tool supports features such as custom window settings, ad removal, and a range of keyboard shortcuts for navigation and page control across macOS, Windows, and Linux.