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Calendar-CE

Calendar CE: Private calendar and task manager for the web and Android. Your events stay on your device or your own CalDAV server. Self-host with Docker or use end-to-end encrypted hosted version.

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GITHUB · launched Nov 4, 2026 · 31 upvotes (top 77%) · 0 views

Niche: personal productivity software · 176 launches, 21 in the last 7 days ▲ +11% · Explore this niche →

Category and tags
  • Horizontal
  • Workflow automation
  • Prosumer
  • Not AI
  • Commercial product
  • agpl
  • android
  • caldav
  • calendar
  • calendar-app
  • calendars
  • +8 more

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More like this: all 176 launches in personal productivity software →

Could you build this?

Partial The calendar UI, event and task CRUD, and CalDAV server wiring are vibe-codeable, but a real version needs correct recurrence and CalDAV/iCalendar compliance plus end-to-end encrypted multi-device sync, which is hard to get right without deep protocol and cryptography expertise.

What it would actually take: Build a native Android app (Kotlin) and a web client sharing a local-first data model, with a CalDAV/WebDAV backend and iCalendar parsing via existing libraries. The hard parts are RFC 5545/4791 compliance (recurrence, timezones, sync tokens) and an E2EE sync layer where keys never leave the client, which needs an experienced security engineer to design and audit. Hosting an encrypted cloud also requires ops for billing, backups and account recovery.

Competitors

Other products that read as similar to this one : 181 launches clear the similarity bar, closest 8 shown.

Attention rank: #173 of 182 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).

Launched 305 days after the earliest competitor.

Related data

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