Alidade

Alidade is a browser-based OpenStreetMap editor targeting experienced contributors. In terms of scope and complexity, it is intended to sit somewhere between iD and JOSM.

Key characteristics

• Blazor WebAssembly — all application logic runs in C# compiled to WASM; no JavaScript framework
• MapLibre GL JS — WebGL-accelerated map rendering; OSM edits are pushed as GeoJSON diffs through a thin JS interop boundary
• Offline-capable — full edit sessions are possible without connectivity; sync on reconnect
• Future desktop target — architecture keeps an Electron packaging path open

Contributions

Since Alidade is in early development and is not yet ready for general use, I am not accepting public pull requests until the project stabilizes.