Mapbox - An open source mapping platform for custom designed maps. Our APIs and SDKs are the building blocks to integrate location into any mobile or web app.
Brain Games - Boost memory power with free brain games
QGIS - QGIS is a desktop geographic information system, or GIS.
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.
Pixelogic - Daily Picross - Nonogram logic game with 5000+ puzzles and a daily puzzle