Photo credit: Konstantin Inozemtsev

1. Skrbl: Whiteboarding tool allows you to instantly create a shared whiteboard and collaborate live with other people
2. WengoVisio: Phone calling widget enables your site visitors to call you through their web browser
3. Jaxtr: Phone calls forwarder lets you receive calls from the Web by forwarding them to your real phone number
4. Hictu: Status displayer for VoIP and IM lets you show your online presence status on different networks

1. Skrbl
   
   
   
   Skrbl is a web-based whiteboard that enables you to instantly collaborate online. You don't even need to register to use it: simply create a new room and give the URL to all the people you want to collaborate with. Everyone in your team can write on the Skrbl board, everyone can read and edit; you can also copy notes and images from anywhere and paste them into Skrbl. You can also keep your Skrbl private, using Skrbl's privacy feature. Registration is required only if you want to keep track of all your online sessions. Free to use.
   
   http://www.skrbl.com/





2. WengoVisio
   
   WengoVisio is a Flash-based widget that you can embed in your blog/website webpage, to allow readers to call you when you're available through their web browser, without downloading any software. The readers have the possibility to make both live audio or video phone calls. You need to signup for a Wengo account and give your site URL to generate the widget code to embed in the website. Free to use.
   http://www.wengovisio.com/
3. Jaxtr
   
   
   
   Jaxtr is a service that allows you to receive calls worldwide while keeping your existing phone numbers private. By adding links to Jaxtr within your email signature, global friends can call you on your phone with the click of the mouse, without downloading any software, incurring international phone charges or even registering for Jaxtr. Jaxtr allows you to control when, where and how you can be reached, and if you don't like receiving calls or voice messages from anyone, you can easily block them. With Jaxtr, you get unlimited voice messages and 100 minutes per month of incoming calls from your online network worldwide.
   
   http://www.jaxtr.com





4. Hictu
   
   Hictu is a service that allows you to display your status in different IM and VoIP networks (such as MSN, Yahoo!, AIM, ICQ, Jabber, Skype and many others). You can automatically import all your pre-existing contacts from Outlook Express and Mozilla Thunderbird. Once you are ready, you can choose which contact or group of contacts you want to insert in the contact list: each one of them will receive an e-mail describing the service and asking to grant authorization for being listed in your contact list and show their communication availability. Free to use.
   http://www.hictu.com