Domcomp - No-nonsense domain price comparisons, updated daily
Courtmatics Smart Tennis Coaching System - Instant coaching & detailed feedback on your tennis game
Pricepeek - Compare prices of the same product across all Amazon locales
Smash Tennis - Makes finding tennis partners easy
dofo.com - Domain search platform Dofo.com gathers all registered (350 million) domains of the world in a single place. Dofo also brings together all the domain names that are on sale, provides useful features, all completely free.
ShotTracker - Boosts basketball players' shot by measuring performance