• AIM
• Bonjour
• Gadu-Gadu
• Google Talk
• Groupwise
• ICQ
• IRC
• MSN
• MySpaceIM
• QQ
• SILC
• SIMPLE
• Sametime
• XMPP
• Yahoo!
• Zephyr

Changes Version 2.2.0
http://developer.pidgin.im/query?status=closed&milestone=2.2.0

Libpurple:

• New protocol plugin: MySpaceIM (Jeff Connelly, Google Summer of Code)
• XMPP enhancements. See http://www.adiumx.com/blog/2007/07/soc-xmpp-update.php (Andreas Monitzer, Google Summer of Code for Adium)
• Certificate management. Libpurple will validate certificates on SSL-encrypted protocols (William Ehlhardt, Google Summer of Code)
• Some adjustments were made to fix sending messages when using the MSN HTTP method. (Laszlo Pandy)
• Yahoo! Chat is fixed.
• Some AIM file transfer issues between Pidgin and other clients have been fixed. (Kyryll A Mirnenko)
• Properly restore idle status and time for AIM and ICQ accounts when they reconnect after being disconnected.

Pidgin:

• Insert Horizontal Rules and Strikethrough text from toolbar.
• Option to show protocol icons in the buddy list, from the Buddies > Show menu. (Justin Heiner)
• Ability to build with native, non-X11 GTK+ on OSX. (Anders Hasselqvist)
• Remember the 'Enable Sounds' setting for a conversation.
• Right-clicking the empty space in the formatting toolbar allows you to toggle back to the old "ungrouped" version.
• Protocols supporting account registration via Pidgin now show a descriptive checkbox instead of a vague "Register" button.
• Fixed a bug where a tab would be shown on single conversations when tabs were disabled.

Finch:

• Per-conversation mute and logging options (accessible from the menu).

• Pidgin 2.2.0 (Windows)
• Pidgin 2.2.0 (Linux & Source)

• Release Notes und Changelog