GitHub gems: open-source software from small creators1,155 projects

B

Run real Windows 98 apps and games in your browser. An x86 emulator and Win32 layer written directly in WebAssembly Text, no OS image, no source ports.

B

A lightweight, cross-platform Markdown editor.

Android AI assistant in a floating bubble: Claude Code, Codex, OpenCode, Gemini (Antigravity CLI) or Grok use your phone for you — read the screen, tap, type. Runs on your own plan, open source, no root, no adb, no PC.

A wiki and document store built with React + Express. Organize markdown files in folders with a beautiful three-pane UI, dark mode, live preview, full REST API, and an optional built in MCP server.

A domain blocklist and allowlist for use in AdGuard Home or similar.

D

A highly accurate, fully featured, and fast Game Boy Advance emulator built to run in the browser.

D

Open-source Android app for YouTube dual subtitles, on-device translation, and tap-to-replay language learning.

E

AI meeting notes with no bot in your call. Local-first app for Windows and Mac: dual-channel recording, transcription, AI notes, action items and answers. Free to self-host with your own keys, or try Earshot Plus free.

E

Reverse engineer's debugger.

Offline, encrypted vault for seed phrases, private keys, passwords and API keys. Also used by agents.

E

A viewer and manager for photos, videos, 3D models and CAD drawings, with an image editor, for Linux and Windows, written in Rust: browse, convert, find duplicates, annotate images and cover private data, copy and move…

F

Backup filesystems, databases, kubernetes and more.

A photo viewer optimized for speed and image uploading. Has light editing features.

A modern, lightweight remote desktop workspace for SSH, SFTP, and FTP/FTPS. Powered by Tauri, Rust, and React.

F

Flipic: free, open-source image viewer for Mac. Double-click a photo and page through the folder with the arrow keys.

F

A native, lightweight Git client for macOS. Manage repositories and worktrees, review diffs, and commit changes in one window.

F

frametrellis is a video editing program, available on Windows, macOS and Linux: offline use, multitrack editing and keyframe animation.

Screen recorder, screenshots, text capture (OCR) and clipboard history for Ubuntu (GNOME).

Wayland screenshot, annotation and screen recording tool with ShareX-compatible uploads.

⚡ The file manager for keyboard lovers. Find any file in milliseconds, search inside every file, compare code, Excel sheets and photos side by side, see Git status, use Vim keys and undo anything.

G

End-to-end encrypted, peer-to-peer messenger with a built-in wallet and verifiable identities. No server, no account.

Small, fast, native Mac git client with a mini Jira built in: task board and code reviews that live in your repo. No sign-up, no server.

G

Open-source, AI-native desktop email client for macOS, Windows and Linux. Your mail stays yours: data is masked locally before any model sees it.

Macintosh and Apple Lisa emulator in the browser: From Lisa 2 to PowerMac G3, booting unmodified ROMs into Mac OS, A/UX, MkLinux, Lisa OS, and Xenix.

Pure Rust GTK4 office suite: Tables (spreadsheet), Decks (presentations), Letters (word processor).

The hacker's CAD: parametric solid models written as code in a small scripting language with units, edited with the mouse too. OpenCascade solids, GTK 4 app, command line and MCP server for AI agents.

Self-hosted control panel for your home server: supervises processes with restarts, port-conflict handling, health checks, logs and telegram/alerts — and a UI you can replace.

I

An open-source browser: ungoogled-chromium underneath, a GPUI interface on top, built to be the browser AI agents work in.

Terminal password manager for KeePass vaults.

J

An open-source, offline-first journaling app built with Flutter. Focus on your thoughts with rich metadata, mood tracking, and absolute privacy.

Free and open-source KeePass-compatible password manager for Windows, Linux, and Android.

Google Keep-style notes for iOS, Android, and self-hosting. Offline-first, with optional sync.

K

A KeePass-compatible password and secrets manager for people who work with AI agents.

K

Kition brings Markdown, DataTable, WhiteBoard, a tool-using AI agent, browser research, and visual workflows into one desktop workspace.

K

Email attention firewall. Five lanes, a reason on every message, your own model key. AGPL-3.0.

The local-first AI knowledge workspace — an infinite canvas for research, learning, and creation (Tauri 2 + Vue 3).

K

koinote is a Markdown editor: Markdown support.

A native home for coding agents — many Claude Code agents in their own git worktrees with live status, plus a light IDE and Git client to review and land their work. GPU-rendered, Rust, macOS + Linux.

Infrastructure as Code for self-hosted homelab managing 20+ Docker services. Automated deployment with Ansible, orchestrated via Docker Compose, routed through Traefik.

L

Open-source workspace of pages, databases, team messages and your email, with realtime collaboration, AI chat and agents, and a built-in MCP server for AI assistants.