### Two-way sync
Manage and synchronize address books, calendars and [task lists](/faq/tasks/advanced-task-features) with a single app.
### Secure & reliable
Designed for simplicity, security and privacy. Modern GUI.
### Seamless integration
Works with your favorite calendar and contacts app.
* CardDAV features
* CalDAV features
* WebDAV features
* More details
* #### Wide range of supported fields
Name, phonetic name; organization and position; phone numbers; email, messenger and postal addresses; photo, notes etc.
* #### Groups and labels
DAVx⁵ supports VCard3 `CATEGORIES` and real VCard4 contact groups.
* #### Contact photos
Synchronize your contact photos between all your devices.
* #### Shared address books
Synchronize with address books shared by other users even when they are read-only.
* #### Wide range of supported fields
Summary, location, description, color, start/end date, duration; classification, status, attendees, reminders etc.
* #### Recurring events
Make use of recurring events and exceptions at certain instances.
* #### Scheduled events
You can send invitations to attendees and manage your participation status in case the server supports it.
* #### Time zones
DAVx⁵ can process events in all time zones, even if they are not available in Android.
* #### Seamless integration of your WebDAV files
Work with remote files as they would be on the device. Browse, edit, upload, download or delete files - no need to sync.
* #### Multiple WebDAV storages
DAVx⁵ can handle all your different WebDAV clouds. You can even up- or download files between them.
* #### Streaming with Random Access Technology
Directly stream videos and music off your Cloud, and even jump to any position on that resource.
* #### Storage Access Framework
Share or attach files directly from your WebDAV Cloud in any app that is using SAF (like most messenger apps)
* #### Self-signed certificates
DAVx⁵ supports SNI, self-signed certificates and authentication with client certificates.
* #### Fast and secure
Thanks to [okhttp](https://square.github.io/okhttp/), DAVx⁵ can use HTTP/2, ALPN, data compression, connection pooling and many other cool things.
* #### External libraries
DAVx⁵ is built on [ical4j](https://github.com/ical4j/ical4j), [ez-vcard](https://github.com/mangstadt/ez-vcard), [okhttp](https://square.github.io/okhttp/) and other solid libraries.
* #### Modular design
By using extensible design patterns, DAVx⁵ is ready for the future. [Certificate management](https://github.com/bitfireAT/cert4android), [WebDAV access](https://github.com/bitfireAT/dav4jvm), [iCal for Android](https://github.com/bitfireAT/ical4android) and [VCard for Android](https://github.com/bitfireAT/vcard4android) are developed as separate libraries.
DAVx⁵ is not only about getting back **control over your data**. In the same way it also opens new possibilites of working and **living together** in a digital world. We've put some of the examples here to let you know what can be achieved with DAVx⁵ and how **life can be made easier** without losing contol over your data.
### Company read-only address books
Imagine a company having dozens or thousands of employees. Wouldn't it be great if everyone had all contacts up-to-date all the time?
### Super paranoid?
Use DAVx⁵ without Google Play, distrust all system certificates, use TOR and be invisible.
### Streaming videos from your home NAS?
Having a videos collection on your NAS? DAVx⁵ offers a direct streaming of all files of any (!) size to your Android device - and you can even jump to any position of that video instantly (however a good network connection is recommended for this :-)
### A shared grocery list with your partner
You're at work, but your better half is somewhere else and finally you remember stuff that has to be bought? No problem: put it in your shared grocery list!
### Family calendar
No more conflicts on event planning. Manage your family events with ease and use a fully editable calendar where everyone has the ability to edit from everywhere.
### Combining two worlds: iOS and Android
Coming from the Apple universe and still want to stay in sync with iCloud? No problem – connect your contacts and calendar with your Android and stay in sync on all your devices, even when you use your iPhone.
### Access your files everywhere
Get access to all your WebDAV files on all your devices. Edit and save them directly on the server without the need of a down- and upload.
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