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

Dual-screen ESP32-S3 handheld console with a dual-core OS, OTA launcher, and 15 native games.

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Convert Sonoff smart devices to Tasmota, ESPHome or OpenBeken over Wi-Fi, with no soldering. Fully automated OTA flasher for Linux, macOS and Windows.

Free little xtensa emulator — a fast, dependency-free esp32 (xtensa lx6) emulator in c with a tracing jit. emulates an esp32 at 2-10x the speed of the real chip.

Emulator for the M-VAVE FM-1 pocket synth: runs its firmwares unchanged in the browser and natively.

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A native macOS git client that switches GitHub accounts automatically by folder or repository.

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Gitea Mirror auto-syncs GitHub repos to your self-hosted Gitea/Forgejo, with a sleek Web UI and easy Docker deployment.

A Home Assistant, native app for desktop/laptop devices.

LG WebOS TV Integration for Home Assistant.

Run a command over SSH, deduplicating its output or input against files stored on the receiving host, to save bandwidth.

A Home Assistant integration for KEF speakers.

ESPHome component for IO-Homecontrol devices.

Multi purpose arduino firmware/schematics built around INDI prptocol.

jellyfin-roku is a media server client program: subtitles.

Jiyue 霁月: a local-first Markdown notes app in Rust (GPUI) with live preview, CJK search and S3 sync.

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Kubernetes operator for automated Kafka backup and disaster recovery. Supports scheduled backups, point-in-time recovery, multi-cloud storage (S3, Azure, GCS), and Azure Workload Identity.

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🏠🔓 Home Assistant integration for Klipsch Flexus soundbars (CORE 100 / 200 / 300): local API, no cloud.

latte is a package manager, available on Linux.

High-performance document and image viewer that prioritizes screen space and control.

A local-first app that turns your documents into a personal knowledge base you can read, search, and actually retain — with the LLM running on your own machine.

Lightweight (~1.5 MB) open-source screen annotation with click-through mode and keyboard-first shortcuts. For demos, teaching, meetings & screen recording. Windows, macOS.

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Local-first AI assistant with real memory, agent tool use, and proactive habits — built with Go + Flutter. Runs fully offline via llama.cpp, recalls context across sessions with local RAG, edits files/runs commands as…

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A free music player on your Windows taskbar: the cover, controls, Spotify lyrics and players you design yourself. Works with Spotify, YouTube and any app in the Windows media controls.

A free, open-source alternative to GitKraken: a fast, good-looking Git client for macOS.

Network scanning in your terminal, built on nmap. Saved targets and profiles, scan history, differential scans and opt-in AI triage.

DIY ESP8266 Geiger counter with MQTT over TLS and a self-hosted Docker dashboard (Flask, MariaDB, Mosquitto).

Nimble Commander - dual-pane file manager for Mac.

Note Mark is a lighting fast, web-based Markdown notes app.

Self-hosted knowledge base for organizing notes, thoughts, and projects with backlinks, properties, views, reminders, and MCP integration.

Keyboard-first presentation editor and presenter for Omarchy.

Self-hosted automatic backups of your files — zero config, light agent, web dashboard.

Portable RF and wireless toolkit built on ESP32-S3.

A stacking and tiling dekstop built around animation, gesture, and spatial interaction.

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My ATProto PDS backup script.

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Offline cyber security agent for your apps and AI coding tools. Open R&D: measured in public, improved every release.

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prose is a Markdown editor: Markdown support, offline use, themes and dark mode.

A GPU-accelerated desktop Git client built in Rust with GPUI.

RomMate - Your ROM companion for converting, compressing, and organizing disc images. Supports CHD conversion and M3U playlist creation for PS1, PS2, Dreamcast, Saturn, and more.

Always free field math and reference for the trades.

Stable native Windows screen recorder in C++20 with WGC, D3D11, Intel Quick Sync capable hardware H.264, WASAPI audio, camera overlay, HQ mode, and local diagnostics.

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Night watch for Windows: scheduled power control, gaming overlay, per-app network limits, tasks and focus, backup, system health. Persian and English.