Thunderbird
4.0 out of 5 stars (based on 2 reviews)
Mozilla Thunderbird is a free and open-source cross-platform email client, personal information
Ithegi: XMPP client
Gajim
5.0 out of 5 stars (based on 1 review)
A fully-featured XMPP client – Connect to your contacts using a server of your choice.