1. HttpThe sabre/http library provides utilities for dealing with http requests and responses.
2. Katana 🔪 A contact, calendar, task list and file server, synced, everywhere, all the time
3. BaikalBaïkal is a Calendar+Contacts server
4. Davsabre/dav is a CalDAV, CardDAV and WebDAV framework for PHP
5. Vobject 📅 The VObject library for PHP allows you to easily parse and manipulate iCalendar and vCard objects
6. Xmlsabre/xml is an XML library that you may not hate.
7. Event🔔 The sabre/event library provides utilities for lightweight event-based programming
8. Uri🌏 Functions for making sense out of URIs in PHP
9. Baikal2Baïkal 2 is a Calendar+Contacts server + web client
10. davclientThe sabre/davclient library provides an easy to use library for consuming Web-, Cal- and CardDAV services
