Directory

PDF markup, measurement and collaboration software for construction documents, with a Windows desktop app plus web and mobile companions

Block-based document and notes app with native Apple, Windows and web clients, structured pages, collections and shareable published documents

Open-source virtual whiteboard for hand-drawn-style diagrams with live collaboration, embeddable as a React component, plus a hosted Excalidraw+ service

Commercial API platform for designing, testing, documenting and monitoring HTTP and other APIs through a desktop and web client with cloud-synced workspaces

Markup-based typesetting system with an Apache-2.0 compiler written in Rust and a collaborative web app, positioned as a faster, simpler alternative to LaTeX