Psi

Instant messaging as free and open as it should be

People tend to stick to the more known messaging clients when there are so many excellent open source alternatives out there like Psi. View full description

PROS

  • Fully customizable
  • Chat on multiple Jabber and IM accounts
  • Lots of tips and strong community
  • SSL encryption and OpenPGP

CONS

  • Commands can be a little technical

Excellent
9

People tend to stick to the more known messaging clients when there are so many excellent open source alternatives out there like Psi.

This client was built to connect to multiple Jabber accounts and more known IM accounts like Yahoo or MSN. It's simple to set up, thanks to startup tips and guides found in the forum and wiki.

This last point is one of the main strengths of Psi. The open source project benefits from a strong community which has really helped make it a solid messaging client over the years. One of the examples of that is all the localized version of Psi that are available.

Psi is easy to use, yet discreet and features lots of iconsets and emoticons. You can also fully customize the interface and add your own icons. You can work with hotkeys and create command lines to insert in your chats, however more technical users will probably feel more comfortable working with these.

Users worried about their security or working with Psi in a public environment will be glad to know that it features SSL encryption and lets you use OpenPGP to send encrypted messages.

Psi is a real pleasure to use and is loaded with features, from security to customization and not forgetting multiple IM and Jabber compatibility. If you're looking for a good alternative messaging client, this is the one to choose.

Built upon an open protocol named Jabber, Psi is a fast and lightweight messaging client that utilises the best in open source technologies. The goal of the Psi project is to create a powerful, yet easy-to-use Jabber/XMPP client that tries to strictly adhere to the XMPP drafts and Jabber JEPs. This means that in most cases, Psi will not implement a feature unless there is an accepted standard for it in the Jabber community. Doing so ensures that Psi will be compatible, stable, and predictable, both from an end-user and developer standpoint.

Unlike other IM clients, Psi is small, fast and responsive. It uses a graphical toolkit called Qt, which takes on the appearance of whichever operating system you run it on. For this reason, Psi doesn't use 'skins'.

Psi has full support for Unicode. Unicode allows Psi to send and receive messages in other languages, even ones that aren't based upon the English letterset. In fact, you are able to use Psi in your choice of eight different languages, with more on the way!