AgenDAV vs Decsync Calendar Sync
A side-by-side comparison of two self-hosted calendar & contacts options — licensing, setup difficulty, resource needs, and what each one replaces.
| Feature | AgenDAV | Decsync Calendar Sync |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 81 · Excellent | 15 · At risk |
| Category | Calendar & Contacts | Calendar & Contacts |
| License | GPL-3.0 | GPL-3.0 |
| Language | PHP | Kotlin |
| Setup difficulty | Medium | Medium |
| Min. RAM | 128 MB | 128 MB |
| Deployment | bare-metal, docker | source, binary |
| GitHub stars | ★ 826 | ★ 699 |
| First released | 2011 | 2018 |
| Replaces | Google Calendar | Google Calendar |
What are AgenDAV and Decsync Calendar Sync?
AgenDAV
AgenDAV is a CalDAV web client that lets users manage and share calendars stored on a CalDAV server. It provides a responsive Ajax interface with drag-and-drop event editing.
- CalDAV web frontend
- Drag-and-drop event editing
- Calendar sharing
Decsync Calendar Sync
Decsync is a method and toolset for synchronizing calendars and contacts via a shared folder rather than a central server. Self-hosters pair it with a file-sync service to keep events consistent across devices.
- Folder-based sync
- No central server
- Calendar and contacts
- Pairs with any file sync
AgenDAV vs Decsync Calendar Sync: key differences
AgenDAV is written in PHP, while Decsync Calendar Sync is built with Kotlin. AgenDAV is the more established project (first released 2011), while Decsync Calendar Sync arrived in 2018. AgenDAV lists first-class Docker deployment; Decsync Calendar Sync does not.
Why pick each one
Choose AgenDAV if…
- Released under the GPL-3.0 license
- First-class Docker support for quick deployment
- Written in PHP
- Tiny footprint — runs in 128 MB RAM
Choose Decsync Calendar Sync if…
- Server-free architecture
- Privacy friendly
Watch out for
- Requires a sync layer
- Setup is non-trivial
Frequently asked questions
Is AgenDAV or Decsync Calendar Sync better?
Neither is universally better. AgenDAV has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are AgenDAV and Decsync Calendar Sync free and open-source?
Yes. AgenDAV is licensed under GPL-3.0 and Decsync Calendar Sync under GPL-3.0. Both can be self-hosted at no software cost.
Can I run AgenDAV and Decsync Calendar Sync with Docker?
AgenDAV: yes. Decsync Calendar Sync: check the project docs for container support.