iBucket - A social bucket list apps that helps you achieve your goals & trips. Available for iOS, Android and Web. Dream it. Plan it. Do it.
Trivia for Slack - Fun team-building with 1000s of quizzes right inside Slack
Trask - Achieve your goals
Thursday - Thursday is where remote teams do their socials.
Achievr - Daily habit tracking for achievers
Flinkit! - Web-hosted team building games for small and large companies