# Climm

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> Markdown URL: https://mediated.wiki/source/Climm.md
> Source: https://en.wikipedia.org/wiki/Climm
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> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

**climm** (previously mICQ) is a [free](/source/Free_software) [CLI-based](/source/Command-line_interface) [instant messaging](/source/Instant_messaging) [client](/source/Client_(computing)) that runs on a wide variety of platforms, including [AmigaOS](/source/AmigaOS), [BeOS](/source/BeOS), [Windows](/source/Microsoft_Windows) (using either [Cygwin](/source/Cygwin) or [MinGW](/source/MinGW)), [OS X](/source/OS_X), [NetBSD](/source/NetBSD)/[OpenBSD](/source/OpenBSD)/[FreeBSD](/source/FreeBSD), [Linux](/source/Linux), [Solaris](/source/Solaris_(operating_system)), [HP-UX](/source/HP-UX), and [AIX](/source/AIX_operating_system).

## Functionality

climm has many of the features the official [ICQ](/source/ICQ) client has, and more:

- It has support for [SSL-encrypted](/source/SSL_encryption) direct connection compatible with licq and [SIM](/source/Simple_Instant_Messenger).
- It supports [OTR](/source/Off-the-Record_Messaging) encrypted messages.
- It is [internationalized](/source/Internationalization); [German](/source/German_language), [English](/source/English_language), and other translations are available, and it supports sending and receiving acknowledged and non-acknowledged [Unicode](/source/Unicode)-encoded messages (it even understands [UTF-8](/source/UTF-8) messages for message types the [ICQ](/source/ICQ) protocol does not use them for).
- It is capable of running several UINs at the same time and is very configurable (e.g. different colors for incoming messages from different contacts or for different accounts).
- Due to its [command-line interface](/source/Command-line_interface), it has good usability for [blind](/source/Blindness) users through [text-to-speech](/source/Text-to-speech) interfaces or [Braille](/source/Braille) devices.

climm also supports basic functionality of the XMPP protocol.

## History

*Climm* was originally developed as *mICQ* by Matt D. Smith as [public domain software](/source/Public_domain_software). Starting with mICQ 0.4.8 it was licensed under the [GPLv2](/source/GPLv2), not much of the original PD code remained since then. All later additions were made by Rüdiger Kuhlmann, in particular, the support for the ICQ v8 protocol. mICQ was renamed to climm ("Command Line Interface Multi Messenger") with version change to 0.6. CLimm was relicensed to include the [OpenSSL exception](/source/OpenSSL_exception).

## See also

- [Comparison of instant messaging clients](/source/Comparison_of_instant_messaging_clients)

## References

**Notes**

- (in German) Andreas Kneib (Feb 2004) *[Der direkte Draht. ICQ in der Kommandozeile](http://www.linux-user.de/ausgabe/2004/02/052-micq/index.html) (Direct Line. ICQ in the command line)*, [LinuxUser](/source/LinuxUser)

## Further reading

- Jonathan Corbet (February 18, 2003) [The trojaning of mICQ](https://lwn.net/Articles/22991/), [lwn.net](/source/Lwn.net)

## External links

- [Official website](http://www.climm.org)
- [ICQ protocol page](https://web.archive.org/web/20070927025835/http://www.climm.org/ICQ-OSCAR-Protocol-v7-v8-v9/)

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Adapted from the Wikipedia article [Climm](https://en.wikipedia.org/wiki/Climm) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Climm?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.