Social Source Commons

Share your files privately and securely. Chat with your friends. Firefox addon.

Instant messaging for Palm OS, can connect to Yahoo, MSN, Jabber, ICQ, from eg. Treo phone

ChatSecure (Gibberbot) is a secure chat client capable of firewall and filter circumvention, surveillance blocking and end-to-end encryption. It works with Google, Facebook, any Jabber or XMPP server, such as OpenFire or eJabberD. Unlike Blackberry BBM’s broken single key security, Gibberbot uses the Off-the-Record encryption standard to enable true verifiable end-to-end encrypted communications.

Free unlimited, private, secure messaging with your friends over Facebook Chat, Google Talk, Hangouts, Jabber, Dukgo & more! Works with Android, iPhone, Mac, Linux or PC.

IN DEVELOPMENT

Cryptocat aims to provide an open source, browser-based instant messaging service which uses technologies such as client-side cryptography in order to provide stronger privacy than today's leading browser-based IM services. Cryptocat aims to leverage both the ease of use and accessibility afforded by web applications and the security provided by client-side public key cryptosystems.

Instant-messaging program

Integrated social messaging app, enables managing Facebook, Twitter, Google Reader, Flickr, Reddit and other feeds from 1 dashboard.

A high-end tool for high-end campaigns

Google Talk enables you to call or send instant messages to your friends for free, anytime, anywhere in the world.

Messaging and collaboration server software.

iChat is an instant messaging application

Imvite lets you chat with all your contacts from Yahoo Messenger, Windows Live Messenger, AIM and ICQ. It allows you to make free video and worldwide PC to PC calls, read news via RSS and also to watch multiple TV channels at the same time.

Open, secure, ad-free alternative to consumer IM services like AIM, ICQ, MSN, and Yahoo (see the IM quickstart).

JomSocial enables social networking on Joomla! sites. Features include activity streams, flexible templating & design, photo gallery, video support, organic groups, event management, social graph management, customize profile, private messaging, and external social network integration.

Messaging service to multiple devices (email, RSS, text messaging, etc.).

Desktop client option for accessing business e-mail, calendars and applications on IBM Lotus Domino server.

Instant messaging for multiple networks

OTR allows you to have private (not just encrypted) conversations over instant messaging by providing: Encryption, Authentication, Deniability, and Perfect forward secrecy.

A multi-protocol Instant Messaging (IM) client

Talk Online anywhere around the world for free, do live video conferencing or Transfer Files of any size with complete security.

SMS groupware tool. Enables one-to-many text messages among private groups.

Project polls or message boards on a large screen, have everyone send their input via their cell phones and see results instantly!

Trillian™ is a fully featured, stand-alone, skinnable chat client that supports AIM, ICQ, MSN, Yahoo Messenger, and IRC.

Zimbra is an open source server and client technology for next-generation enterprise messaging and collaboration.