13 Open-Source Apps I Use from a Web Browser (And You Can Too)

A curated list of 13 open-source web applications that can be used directly from a browser without installation. The collection spans productivity tools (ONLYOFFICE DocSpace, CryptPad), design software (Penpot, Graphite, Excalidraw), video editing (OpenCut), collaboration platforms (Jitsi Meet, Taiga), and utilities (Squoosh, Mermaid Live). Most tools offer public hosted instances with free tiers, emphasize privacy through local processing or end-to-end encryption, and can optionally be self-hosted. The list demonstrates that open-source alternatives now compete with proprietary web apps like Google Docs, Figma, and Zoom.