LogicLike - Improve logical thinking through engaging brain games
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.
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
QGIS - QGIS is a desktop geographic information system, or GIS.
JobFlare - Brain games for job seekers
OpenStreetMap - OpenStreetMap is a map of the world, created by people like you and free to use under an open license.