Cross-Platform Open Source Software
Discover 135 open source Cross Platform repositories from GitHub, each with an analysis of what it does, key features, use cases and alternatives. Cross Platform projects here are most often combined with Desktop App, Developer Tools and TypeScript. Last updated October 4, 2026.
135 repositories · updated October 4, 2026
stac: Build Flutter UIs from Server-Delivered JSON
Stac is a Flutter framework for rendering server-driven interfaces from JSON authored with a Dart DSL. It suits teams that need to change screens, layouts, or flows without shipping a new app version for every UI update.
EasyTier: Build Decentralized Mesh VPNs
EasyTier connects devices across networks through a decentralized virtual private network, with NAT traversal and optional relay nodes. It suits people who need private connectivity between remote devices or subnets without relying on a centralized VPN service.
localsend: Share Files Between Nearby Devices
LocalSend transfers files and messages between nearby devices on the same local network, without internet access or third-party servers. It suits people who need a cross-platform alternative to cloud-based sharing or platform-specific transfer tools.
deepchat: Run AI Agents in a Desktop Assistant
DeepChat is a cross-platform desktop client for chatting with cloud and local AI models and running agents. It suits people who want tools, skills, and resumable sessions in one local-first workspace.
res-downloader: Capture and Download Online Media Resources
A Go and Wails desktop app that uses a local proxy to detect and list media resources from supported apps and websites. It is aimed at users who want a visual workflow for finding videos, audio, images, livestreams, and m3u8 streams across Windows, macOS, and Linux.
donutbrowser: Manage Isolated Chromium Browser Profiles
Donut Browser is a desktop Chromium profile manager built around a privacy-focused anti-detect engine. It is aimed at people who need separate browser identities, per-profile proxies, and optional sync or automation integrations.
QGIS: Create, Analyze, and Share Geographic Maps
QGIS is a cross-platform GIS for working with spatial data, creating maps, and running geospatial analysis. It suits GIS professionals, researchers, public agencies, and other users who need a flexible desktop mapping and data workflow.
nuclear: Play and Organize Music Across Desktop Platforms
Nuclear is a free desktop music player for Windows, macOS, and Linux that searches for music and streams it from available sources. It suits listeners who want playlists, plugin-based features, and playback controls without ads or tracking.
super-productivity: Plan Tasks and Track Work Time
Super Productivity combines task planning, timeboxing, and time tracking in a privacy-focused app for web, desktop, and mobile. It suits people who want to organize projects and connect work items from issue trackers and calendars.
nebula: Build Secure Peer-to-Peer Overlay Networks
Nebula connects hosts across networks through an encrypted, certificate-based overlay, with group-based traffic rules and peer discovery. It suits teams that need secure connectivity across cloud, datacenter, and endpoint environments without relying on a fixed addressing scheme.
whisper.cpp: Transcribe Speech with Whisper in C/C++
whisper.cpp runs OpenAI Whisper speech recognition through a lightweight C/C++ implementation. It suits developers building offline transcription into applications across desktop, mobile, browser, and server environments.
moonlight-qt: Stream PC Games to Desktop and TV Devices
Moonlight PC is a cross-platform client for streaming games and desktop sessions from NVIDIA GameStream and Sunshine hosts. It suits players who want low-latency remote play with hardware decoding, modern video formats, HDR, and gamepad support.