Gudasoft

1. You should go here http://whatismyip.com/ and take your IP.
2. Download VNC client. It is open-source software that could be downloaded from here
   if you are on normal windows XP click on this direct link here to download the last version
   1. Save the downloaded file and run it.
   2. During the installation choose that you want the client and the server.
   3. Choose to install as a service
   4. You must provide a password for the server to be able to accept incoming connections

      
      
3. Restart your computer
4. Tell your ip from http://whatismyip.com/ to the person you want to invite, and share the password with him.
5. You should see a new icon in you try near the clock. when this icon changes its colour, this means that someone is connected to your screen.

Here is help in Bulgarian

Ticketing system

http://www.assembla.com/wiki/show/int_ticketing

trac is what I use today, here as some Ruby ones: something like trac Tracks

Online colaboration

http://www.zoho.com/ – chat, presentation, word, databases, meeting.