Communication

Converts email messages from obsolete and proprietary formats to open formats.

Free

Instant messaging client supporting the XMMP protocol.

Full-featured mail-merge tool for Macintosh that allows you...

Clean your mailing lists from faulty addresses by detecting bounces.

Free

Open-source cross-platform communication tool.

Full-featured App.net client in a super simple package built just for OS X.

Free

Send faxes through the sipgate VoIP service.

Free

“IP Messenger for MacOS X” is a pop up style message communication software.

Free

Simple menubar application which can provide you with a quick and easy way to see how many unread email messages are in Apple's Mail.

Free

FreePOPs allows access to the most varied resources through the POP3 protocol.

Enterprise-class software built from the ground up to drive business objectives.

Free

Open-source tool for automatically uploading images to Flickr.

Free

This extension allows you to access facebook chat from the extension button.

This program helps you export contact info from your address book.

To use LiSA assign relationships with your contacts such as brother...

Free

Secure Instant Messaging and collaboration tool.

Free

Enables you to share live broadcasts to users from all over the world

Zimbra Desktop gives users access to the same sleek Zimbra experience...

Contact a large number of recipients with customized email messages.

Free

It offers you an easy way to check your Gmail account.

Free

Echofon for Mac is the minimal yet powerful Twitter app that syncs unread Tweets with your iPhone.

Free

This program helps you keep track of the latest tweets.

GrowlVoice is an intuitive and fully-featured Google Voice client that brings the power of Google Voice to your Mac's menu bar.

It copies Mail.app message properties to the clipboard for further saving.