Open-source gold for builders.

A browser-based video subtitle workstation that edits, styles and burns subtitles into local MP4 files, with optional on-device Whisper transcription.

Open-source local subtitling for any video: Whisper transcription, translation, styling and burn-in, in the browser, desktop app or CLI, without uploading the video.

Self-hosted mail server for your own domain, with SMTP/IMAP/POP3, CardDAV/CalDAV, a React webmail and admin console, deployed via Docker Compose.

Open-source macOS menu bar app that shows word-by-word synced lyrics for Apple Music, Spotify, QQ Music, NetEase Cloud Music and more, with Last.fm scrobbling.

One-line bash script that runs a full server check-up: hardware and benchmarks, IP quality, and network latency and routing.

A config-driven terminal dashboard built on Bubble Tea, where one YAML file defines shell-command data sources and a grid of widgets.

A fast, multi-threaded command-line string search tool that is grep-compatible, with SIMD acceleration and regex support.

A browser terminal emulator built on Ghostty's WASM-compiled VT parser, with an xterm.js-compatible API.

Structured study notes in 18 modules covering Linux terminal, networking, permissions, scripting and kernel basics, based on the Linux Basics for Hackers book.

A Python library for building styled, publication-quality display tables from pandas or Polars DataFrames, rendered to HTML or images.

A self-hosted, web-based take on the One Sec app: a ten-second breathing page before distracting apps open, plus a daily goals page, running on Cloudflare's free tier.

A lightweight terminal TUI for managing SSH, serial, telnet, SFTP, FTP, WebDAV and S3 connections in one binary.

A Web Application Firewall middleware for the Caddy web server, with regex rules, IP/DNS/ASN/GeoIP filtering, rate limiting and Tor exit-node blocking.

A Go CLI and GitHub CLI extension that starts a local web server to preview GitHub Flavored Markdown, including offline.

An open-source reinforcement learning agent for competitive Guandan, a four-player partnership card game, with a playable web table.

A self-hosted subtitle system where an LLM agent finds, verifies, and installs subtitles for your media library, and translates when no source exists.

A native desktop Git client for Windows, macOS and Linux, built with Rust and egui, with optional AI help for three-way merges.

A Go implementation of the endlessh SSH tarpit that exports Prometheus metrics and ships with a Grafana dashboard for attacker statistics.

A Claude Code skill that reads your local session logs to explain where token usage went and why you hit limits.

Desktop tool that pulls e-invoices (PDF, OFD, XML) from QQ or 163 email, recognizes them with OCR, sorts them into folders and builds an Excel expense summary.