GitKraken - The intuitive, fast, and beautiful cross-platform Git client.
PagerDuty - Cloud based monitoring service
SourceTree - Mac and Windows client for Mercurial and Git.
VictorOps - We make on-call suck less & help teams to solve problems faster.
GitHub Desktop - GitHub Desktop is a seamless way to contribute to projects on GitHub and GitHub Enterprise.
xMatters - xMatters transforms event data into intelligent communication IT teams, avoiding outages and disruptions