Photo credit: Juri

1. FlickIM: Web-based instant messenger allows you to connect to all major IM services
2. Jajah Buttons Place a button on your website allowing anyone to call you without giving them your phone number
3. Taskbin: Create groups, share tasks, set their priorities, and get notifications for your and other people's tasks
4. Slick: Mobile instant messenger for Symbian based phones enables you to access ICQ, Yahoo! and AIM

1. FlickIM
   
   FlickIM is a web-based instant messenger that you can use to connect to all major IM services(MSN, Yahoo, AIM, Google Talk, Jabber and ICQ) at once, with many add-ons to let you communicate more effectively with your friends through video, audio, and more. You can also create a FlickIM account that will remember all your account credentials for you. Free to use.
   http://flick.im/





2. Jajah Buttons
   
   Jajah Buttons is a new addition by the famous VoIP provider. It's an embeddable widget for you to put anywhere(as blogs, websites, email signatures...) and that allows you to have a "Call Button" for anyone to call you without having to give out your real number. They simply enter their phone number, click call, and they'll automatically be connected with you for free.
   http://www.jajahbuttons.com/





3. Taskbin
   
   Taskbin is a web-based service that allows you to "share" tasks with a group of people. You can create an unlimited number of tasks, each with its own priority level(now, today, tomorrow, sometime this week and sometime soon). All your and other people's tasks can have email and/or RSS notifications. The application is ideal for work with cross location teams with its mobile support and has great support for multiple time zones. Free.
   http://www.taskbin.com/





4. Slick
   
   Slick is a mobile instant messenger for Symbian based phones that anyone can use to chat on multiple IM networks. After you download and install the small application, you are able to connect to ICQ, Yahoo!, and AIM networks at once. It supports emoticons, sound alerts and tabbed chatting. Free to download and use.
   http://www.lonelycatgames.com/?app=slick