Observed arrival · 2026-11-05
calsync keeps calendars in sync without taking them over
A free, self-hosted tool for two-way syncing Google, Microsoft 365, iCloud, CalDAV and read-only .ics calendars.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- People keeping work and personal calendars aligned
- Worth noticing
- A sync run pauses for review if it would remove more than half of a calendar’s copies.
Field notes
The described workflow previews changes before a sync starts and distinguishes writable calendars from read-only .ics feeds. The page says Google and Microsoft each require a user-created sign-in app, while iCloud and other CalDAV calendars use an app password. It lists a 120-day sync window and a five-minute default interval, with the interval adjustable.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue