TeamBuddy - Team building for remote companies
NextRetreat - All-in-one solution for organising team retreats & offsites
Trivia for Google Chat - Team-building w/ fun quizzes, games right inside Google Chat
BoomPop - One-click offsites for remote teams.
Trivia for Slack - Fun team-building with 1000s of quizzes right inside Slack
TeamOut - TeamOut offers easy-to-book venues for team retreats.