Open-source tool library
Filter open-source tools and software by use case, platform, deployment, and open-source status.
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spec-kit
An open-source CLI toolkit for Spec-Driven Development that guides AI coding agents through structured specification, planning, and code generation steps.
github · Active in the last 30 days
excalidraw
An open-source virtual whiteboard for sketching hand-drawn style diagrams with real-time collaboration.
excalidraw · Active in the last 30 days
massCode
A local-first desktop workspace for snippets, Markdown notes, HTTP requests, calculations, drawings, and everyday developer utilities.
massCodeIO · Active in the last 30 days
agent-device
Mobile app automation and verification for AI coding agents, enabling live interaction and testing across iOS, Android, HarmonyOS, and more.
callstack · Active in the last 30 days
SwiftBar
An open-source macOS utility that turns scripts into custom menu bar items and supports the BitBar/xbar plugin format.
swiftbar · Active in the last 30 days
Flare
A graph-first IDE for agentic coding featuring a live codebase map, integrated terminal, and MCP task collaboration.
AlgoNoRhythm · Active in the last 30 days
massing
Open-source, self-hosted, IFC-native AEC platform featuring in-browser BIM modeling, a general contractor portal, and development proforma tools.
ibuilder · Active in the last 30 days