Synchronization Horde provides several techniques and supports a number of protocols to enable synchronization between Horde applications, resp. Horde Groupware, and large variety of external clients. Horde supports the following synchronization protocols: ActiveSync CalDAV CardDAV WebDAV SyncML Features For a more detailed feature grid, please see the individual protocol's pages. The number refers to the minimum Horde version required for full read-write support. +----------+-----+--------+------+-----+-----+---------+ |Protocol |Email|Contacts|Events|Tasks|Notes|Discovery| +==========+=====+========+======+=====+=====+=========+ |ActiveSync|5.0 |4.0 |4.0 |4.0 |5.1 |5.0 | +----------+-----+--------+------+-----+-----+---------+ |CalDAV |- |- |5.1 |5.1 |- |5.1 | +----------+-----+--------+------+-----+-----+---------+ |CardDAV |- |5.1 |- |- |- |5.1 | +----------+-----+--------+------+-----+-----+---------+ |WebDAV |- |- |3.2 |3.2 |- |- | +----------+-----+--------+------+-----+-----+---------+ |SyncML |- |3.0 |3.0 |3.0 |- |- | +----------+-----+--------+------+-----+-----+---------+ Clients This is just a generic overview about the supported clients or device category. For details about supported versions or models, see the individual protocol's pages. Legend: B = builtin, b = partially builtin, E = external app/program/plugin required. +---------------------+--------------+------+-------+------+------+ |Client/Device |ActiveSync |CalDAV|CardDAV|WebDAV|SyncML| +=====================+==============+======+=======+======+======+ |Desktop Clients | | +---------------------+--------------+------+-------+------+------+ |Outlook |B (Since 2013)|? |? |? |? | +---------------------+--------------+------+-------+------+------+ |Thunderbird/Lightning|E |B |E |B |E | +---------------------+--------------+------+-------+------+------+ |Evolution |? |? |? |? |? | +---------------------+--------------+------+-------+------+------+ |Kontact |? |? |? |? |? | +---------------------+--------------+------+-------+------+------+ |Mobile Devices | | +---------------------+--------------+------+-------+------+------+ |Android |B |E |E |E (1) |E | +---------------------+--------------+------+-------+------+------+ |iOS |B |B |B |- |? | +---------------------+--------------+------+-------+------+------+ |Windows Phone |B |? |? |? |E | +---------------------+--------------+------+-------+------+------+ |Blackberry |B (Since BB10)|B |B |? |? | +---------------------+--------------+------+-------+------+------+ (1)Support for such an WebDAV based Appointment sync is provided e.g. by following Android App CalendarSync