Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
CiraSync - CiraSync is a program that syncs and shares office 365 GAL contacts and calendars to smartphones.
Mixmax Calendar - The fastest way to schedule meetings with anyone, anywhere
Clariti.app - Clariti is a team communication app that uses Artificial Intelligence to combine emails, chats, documents, calendar events and feeds on the same topic, in rich context-based Conversations to ensure your communication stays focused & organized.
Kin Calendar - The simple and connected calendar
Socialsuite - Impact measurement with measured outcomes