Cross-Platform Open Source Software
Cross-platform software is designed to run on more than one operating system or device type, often with a shared interface and feature set. It helps people use familiar tools across different computers, reduces the need to maintain separate workflows, and lets developers reach users with varied hardware. Some applications share most of their code across platforms, while others adapt interfaces or capabilities to suit each environment.
Open source options include desktop applications, utilities, games, media tools, and software for connecting or synchronizing devices. When choosing one, check which operating systems and versions it supports, whether key features work consistently, and what hardware or dependencies it requires. License terms, release history, maintenance activity, documentation, and compatibility with existing tools can also matter. These options are useful for individuals, teams, and developers who need software to work across diverse environments.
90 repositories · updated October 3, 2026
Orkas: Command a Team of AI Agents from Your Desktop
Orkas is an open-source, local-first AI desktop application designed to orchestrate a team of specialist AI agents. It allows a Commander LLM to direct sub-agents and run coding CLIs locally, with agents that self-evolve through reflection and skill crystallization. This cross-platform tool supports macOS, Windows, and Linux, empowering users to manage complex tasks efficiently.
json-render: The Generative UI Framework for Dynamic Interfaces
json-render is a powerful Generative UI framework that allows developers to create dynamic, personalized user interfaces from natural language prompts. It ensures reliability by constraining AI-generated output to predefined components and actions, offering a predictable and safe way to build cross-platform UIs.
helium: A Privacy-Focused Chromium Web Browser
Helium is a Chromium-based browser focused on privacy, unbiased ad-blocking, and a simpler browsing experience. It is aimed at people who want Chromium compatibility without extra browser clutter.
OpenRA: Play and Mod Classic Westwood RTS Games
OpenRA is a cross-platform C# engine for playing and creating real-time strategy games inspired by early Westwood classics. It supports distributed reimaginings of Red Alert, Tiberian Dawn, and Dune 2000, plus custom maps and mods.
OfficeCLI: Create and Edit Office Files from the Command Line
OfficeCLI is a cross-platform CLI for AI agents and developers to create, read, edit, and validate Word, Excel, and PowerPoint files. It combines structured commands, JSON output, and built-in document previews in a self-contained binary.
voicebox: Create and Use AI Voices Locally
Voicebox is a desktop voice studio for local speech generation, voice cloning, dictation, and agent audio. It suits creators and developers who want voice tools and integrations on their own machine, with hardware and platform capabilities varying by setup.
easy-whisper-ui: Transcribe Audio and Video Locally
EasyWhisperUI is a desktop app for transcribing audio and video locally with whisper.cpp. It offers batch and live transcription, subtitle and text exports, and GPU acceleration where supported, without requiring command-line use.
Recordly: Create and Edit Polished Screen Demo Videos
Recordly is a desktop screen recorder and editor for creating polished walkthroughs, product demos, and other short videos. It combines recording, timeline edits, cursor and webcam styling, and MP4 or GIF export across macOS, Windows, and Linux.
REAL-Video-Enhancer: Interpolate and Upscale Videos
A desktop video-processing app for interpolating frames, upscaling, decompressing, and denoising video on Windows, Linux, and macOS. It offers several inference backends for different GPU hardware.
Notes: A Fast and Beautiful Cross-Platform Note-Taking App
Notes is an open-source, cross-platform note-taking application designed for speed and beauty. Written in C++ with Qt, it offers robust features like Markdown support, Kanban boards for tasks, and comprehensive organization options. This app prioritizes user privacy, ensuring a secure and efficient environment for capturing your thoughts.
Open-LLM-VTuber: Talk to LLMs with a Live2D Avatar
Open-LLM-VTuber is a cross-platform AI companion for voice conversations with language models, paired with a customizable Live2D avatar. It supports local and hosted models, with web and desktop modes for users who want a more expressive, hands-free interface.
openclaw: Run a Personal AI Assistant Across Your Devices
OpenClaw runs an AI assistant on your own hardware and connects it to messaging channels and companion apps. It suits people who want a customizable assistant across devices, with local control over its state and configuration.