Planyway - Visual project management for Jira and Trello: manage resources, build project roadmaps, use time tracking.
Mixmax Calendar - The fastest way to schedule meetings with anyone, anywhere
Sunsama - Calendar and scheduling for teams
Google Calendar - Spend less time managing your day & more time enjoying it
Zenkit Desktop Apps - Organize your projects and team. Now on Mac, Windows, Linux.
Clean Google Calendar - Makes Google Calendar look nicer & launches as a desktop app