Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.
LogicLike - Improve logical thinking through engaging brain games
Search Grader by Algolia - A free tool to evaluate your product's search experience
Dualnback.works - Dual N-back is a specific brain training exercise, that's been shown by research - it might improve fluid intelligence.
Webflow Site Search - Design and build custom search for Webflow sites — visually
JobFlare - Brain games for job seekers