logoInstantbird Portable 1.1 has been released in all 11 languages it supports. Instantbird is a customizable instant messaging client with support for AOL, Yahoo, MSN, Google Talk, Twitter, Facebook, XMPP, IRC and ICQ. It's powered by Mozilla so it has support for customization using themes and extensions built-in. It's packaged in PortableApps.com Format so it can easily integrate with the PortableApps.com Suite. It supports upgrades by installing right over an existing copy, preserving all settings. And it's open source and completely free.

Supported networks
First and foremost, Instantbird is an instant messaging client with a wide variety of supported networks, including:
AOL Instant Messenger (AIM), Facebook Chat, Google Talk, Twitter, MSN Messenger, XMPP (Jabber), Yahoo! Messenger... But also many others like: Gadu-Gadu, Novell Groupwise, ICQ, IRC, MySpaceIM, Netsoul, QQ, SIMPLE, Yahoo! JAPAN, and even more optionally available on the Instantbird Add-Ons website, such as Omegle and LJ Talk (LiveJournal).

Features
Instantbird is designed to make instant messaging better:
* Talk to all your friends - With Instantbird, you can now talk to all your friends with a single application. AIM, Yahoo, MSN, Google Talk, Facebook and even Twitter are supported.
* Trouble free - Instantbird has been designed with stability and simplicity in mind. You will enjoy its clean clutter-free user interface: nothing will distract you from your conversations. No ads, you won't be annoyed by unwanted content.
* Conversations in Tabs - Conversations are grouped in Tabs, ensuring you never feel swamped by conversations windows poping up everywhere. The tabs are easy to use: you can drag them to reorder them, or move a conversation into a new window.
* Customizable conversations - With a few carefully designed message themes available by default and hundreds more available as add-ons, there's all you need to make your conversations feel personal. Let's turn them into a colorful, delightful experience!
* Smart contacts - Having several ways to contact the same person? No problem, just drop a contact onto another and Instantbird will know it's the same person.
* Always here for you - In addition to the portable Windows version, standard Instantbird can work on all your computers, whether they are running Windows, Mac OS X or Linux. Being free and Open-Source, you will never have to pay to use it. You will never have to learn to use another IM client again.
* Limitless extensibility - Powerful tools like inline search or zoom are built-in to help you get the most out of your conversations. More are available as add-ons, thanks to Instantbird's limitless extensibility.

Instantbird 1.1 released October 18, 2011!
- Exactly 4 years after the very early 0.1 preview, Instantbird 1.1 has just been released today in 13 locales (Swedish and Estonian are new)!
- In addition to several stability fixes and a dramatic reduction of resource consumption in some cases, this new release will make Twitter and IRC much more usable in Instantbird:
* On Twitter, it’s now possible from the context menu to retweet, to reply to a tweet (or simply double click on the tweet to start a reply). The context menu also lets you follow or unfollow the author of the tweet.
* Tab completion of usernames (starting with an @ character on twitter) or nicknames (in IRC channels) will also be very appreciated.
- All these changes have been commonly requested, so no surprise here. But there’s one last feature I would like to talk about before offering you a download link: Instantbird 1.1 brings support for putting conversation on hold. This means you can now close conversation tabs without leaving the conversation, the conversation will sit at the top of the Contacts window until you reopen it or someone talks to you. While this may seem like a small change, it’s exceptionally useful for IRC users who tend to idle in lots of channels because they want to "be there just in case” but don’t interact much with the conversation.