The Horde_Secret library provides an API for encrypting and decrypting
small pieces of data with the use of a shared key.

The Horde_Serialize library provides various methods of encapsulating data.

This package provides client libraries for the Facebook REST API.

This package provides client libraries for the Twitter REST API.

Horde_SessionHandler defines an API for implementing custom session
handlers for PHP.

Horde_Share provides an interface to all shared resources a user
owns or has access to.

Unified spellchecking API.

This package provides various stream filters.

This package provides various stream wrappers.

This package provides supporting functionality for Horde that is not tied
to Horde but is used by it. These classes can be used outside of Horde as
well.

This package provides classes for implementing a SyncML server.
SyncML is an OMA standard for synchronizing contacts, notes, calendar and tasks of mobile devices similar to ActiveSync
It is advisable to use it together with other components from the Horde Framework

Horde Template system. Adapted from bTemplate, by Brian Lozier
.

The Horde_Test library provides Horde-specific PHPUnit base classes.

This package provides a text-based diff engine and renderers for multiple
diff output formats.

The Horde_Text_Filter library provides common methods for fitering and
converting text.

The Horde_Text_Filter_Csstidy:: class provides the PHP-based library needed
to perform optimization/compression on CSS code. It is provided in a
separate package as the code is under the GPLv2 license instead of the
LGPLv2 license used for the Text_Filter class.

The Horde_Text_Flowed:: class provides common methods for manipulating text
using the encoding described in RFC 3676 ('flowed' text).

This is a Packaged version of the PHP Thrift client

The Horde_Token:: class provides a common abstracted interface into the
various token generation mediums. It also includes all of the functions for
retrieving, storing, and checking tokens.

This is the horde translation library

This package provides a tree view of hierarchical information. It allows
for expanding/collapsing of branches and maintains their state.

This class represents a single URL and provides methods for manipulating
URLs.

These classes provide functionality useful for all kind of applications.

This package provides a Virtual File System API, with backends for:

* SQL
* FTP
* Local filesystems
* Hybrid SQL and filesystem
* Samba
* SSH2/SFTP
* IMAP (Kolab)

Reading, writing and listing of files are all supported, and there are both
object-based and array-based interfaces to directory listings.

The Horde_View library provides a simple View pattern implementation.