HFHugging Face HubHugging Face · Training & fine-tuningIn-depth entryHosting platform for open models, datasets and Spaces demo apps built on git repositories and Xet storage, with Inference Providers, Endpoints, Jobs and an open-source Python client and CLIMixedFreemiumPaidLocalNov 2, 2026
MMermaidMermaid project (Knut Sveidqvist and contributors) · Design & prototypingJavaScript library that renders flowcharts, sequence, class, state, ER, Gantt and other diagrams from a Markdown-like text syntaxMITOpen sourceFreeLocalNov 2, 2026
OAOverpass APIRoland Olbricht and the OpenStreetMap community · GIS & mappingRead-only query service for OpenStreetMap data using the Overpass QL language, available on public instances or self-hostedAGPL-3.0-onlyFreeOpen sourceSelf-hostedNov 2, 2026