Open Source WebAssembly Software & Tools
Discover the best open source software and alternatives built with WebAssembly. Explore top tools, compare features, and find the right solution.
TrailBase
An open-source, single-executable Firebase alternative with sub-millisecond REST and realtime APIs, built-in auth, a WebAssembly runtime, and an admin UI.
Alternative to: 
Firebase
Firebase
celld
Open-source daemon that runs Cloudflare Workers and Durable Objects on your own machines, with state stored in an S3-compatible bucket.
Alternative to: 
Cloudflare Durable Objects
Cloudflare Durable Objects
Apogee
Private, in-browser AI summarizer for articles, videos, and PDFs that runs entirely on-device via WebGPU, WebAssembly, or a local Ollama instance.
Alternative to: 
Merlin AI
Merlin AIAI-assisted
Open CAD Studio
Open-source 2D drafting and 3D modeling CAD app built with Rust. Reads and writes DWG/DXF natively with desktop and browser builds.
Alternative to: 
AutoCAD
AutoCAD