Sporty - Beautiful app for creating/joining sports activities nearby
Proof.ink - Proven immutable data stored on the Steem blockchain
5F - Find Fit Friends - Tinder for more “active” people. Find Sport Buddies.
Immutable.js - Immutable persistent data collections for Javascript which increase efficiency and simplicity. - immutable-js/immutable-js
Fullcourt - The social network for basketball players
DataTip - The fastest way to store & access your critical datapoints.