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What was it?
Beautiful cross-platform calendar app. Integrated with everything. Acquired by Microsoft.
What happened?
Microsoft acquired Sunrise in 2015 for ~$100M. Features absorbed into Outlook. App shut down.
Migration Guide
Microsoft Outlook (successor), Google Calendar, Fantastical, or Cron (now Notion Calendar).
Timeline & context
Sunrise Calendar acquired & killed in August 2016, 10 years ago. It sat in the design category, where Soft.xyz tracks 7 discontinued products in total. If you are still running it in production, the migration path above is the shortest route off it.
FAQ
Why did Sunrise Calendar shut down?
Microsoft acquired Sunrise in 2015 for ~$100M. Features absorbed into Outlook. App shut down.
What should I migrate Sunrise Calendar to?
No drop-in replacement is tracked yet — check the design category for current options.
Is there a free alternative to Sunrise Calendar?
Not among the tracked alternatives.