[](http://sourceforge.net/projects/adium/files/Adium_1.5.4.dmg/download?accel_key=67%3A1360794271%3Ahttp%253A//adium.im/%3Aec915758%24f8e0c76eb0905e3055634c1a54b58137212a866d&click_id=2360e5ce-762c-11e2-bea6-0200ac1d1d8a&source=accel)

[Download Adium 1.5.4](http://sourceforge.net/projects/adium/files/Adium_1.5.4.dmg/download?accel_key=67%3A1360794271%3Ahttp%253A//adium.im/%3Aec915758%24f8e0c76eb0905e3055634c1a54b58137212a866d&click_id=2360e5ce-762c-11e2-bea6-0200ac1d1d8a&source=accel)

Adium is a free and open source instant messaging application for [OS X](https://www.apple.com/osx/), written using OS X's Cocoa API, released under the [GNU GPL](http://www.gnu.org/licenses/licenses.html#GPL) and developed by [the Adium team](https://trac.adium.im/wiki/AdiumTeam).</p>

Based on the [libpurple](https://trac.adium.im/wiki/LibPurple) protocol library, Adium can connect you to any number of messaging accounts on any combination of supported messaging services and then chat with other people using those services.

* Open Source, so everyone can see how Adium works and [help improve it](https://trac.adium.im/wiki/Development)

* Support for a wide range of different Instant Messaging services (see the [full list](http://adium.im/help/pgs/Accounts-ListOfServices.html))

* A delightful UI

* [Tabbed chat windows](http://adium.im/help/pgs/Messaging-TabbedMessaging.html)

* Mac OS X integration

* [Address Book integration](http://adium.im/help/pgs/AdvancedFeatures-AddressBookIntegration.html)

* [WebKit Message View](http://adium.im/help/pgs/Messaging-MessageView.html): Theme your chat windows

* [Combined Contacts](http://adium.im/help/pgs/ContactList-CombiningContacts.html): Merge your contacts so that each one represents a person, not an account

* A sophisticated events system (including [Growl notifications](http://adium.im/help/pgs/AdvancedFeatures-GrowlSupport.html))

* [OTR Encryption](https://trac.adium.im/wiki/OTREncryption)

* [File Transfer](http://adium.im/help/pgs/AdvancedFeatures-FileTransfer.html)

* [Xtras](http://adium.im/help/pgs/AdvancedFeatures-AdiumXtras.html) and many, many other customization options

* A beautiful icon, the "[Adiumy](https://trac.adium.im/wiki/Adiumy)" duck

* [Translations](https://trac.adium.im/wiki/Translations): Adium speaks 27 different languages

- **Adium 1.5 or later**: Mac OS X 10.6.8 or newer, an Apple-branded Macintosh computer

- [Adium 1.4.5](http://adiumx.cachefly.net/Adium_1.4.5.dmg): Mac OS X 10.5.8

- [Adium 1.3.10](http://adiumx.cachefly.net/Adium_1.3.10.dmg): Mac OS X 10.4

- [Adium 1.0.6](http://adiumx.cachefly.net/Adium_1.0.6.dmg): Mac OS X 10.3.9

- [Adium X 0.89.1](http://adiumx.cachefly.net/AdiumX_0.89.1.dmg): Mac OS X 10.2.x and older

Adium X 0.88 up to Adium 1.4.5 are Universal applications which run natively on both PowerPC- and Intel-based Macintosh computers. Adium 1.5 and up require an Intel based computer.

See our [Supported OS Policy](https://trac.adium.im/wiki/SupportedOSPolicy) for more information.

See [our own wiki](https://trac.adium.im/wiki/Development) for ways you can contribute to Adium.

* http://adium.im/

* feedback@adium.im