Photo credit: Kuklev

1. FileURLs: Upload a file, pick how many days it will stay online for, protect it, and share it via a URL
2. Trutap: Connect to all major instant messaging services from your mobile phone for free
3. ParaChatCreate an embeddable chat room for your web-site and interact with your visitors
4. Talkvue: Get your private video conferencing room and have meetings with up to six people

1. FileURLs
   
   FileURLs is an easy-to-use online file sharing system. With three simple clicks, you can upload any type of file on the internet, and get a unique, password-protected URL that you can share with anyone to allow them get the file. Just select any file from your computer (up to 250 MB), select how many days it should be available for, pick whether you want to protect it with a password, and click the button. Free to use, no registration needed.
   http://fileurls.com/





2. Trutap
   
   Trutap is a mobile instant messaging service that allows you to take your online social life wherever. You can send group messages, SMS and email from your mobile phone for free. You can chat with your friends on IM services (MSN, Yahoo!, AIM and ICQ), and share files. It is completely free to download and use, but you might be charged for connection by your provider. Check the supported phones.
   http://trutap.com/





3. ParaChat
   
   ParaChat is a free online service that you can use to create a chat room for your web-site. Without signing up, you can immediately create a room by typing the dimensions of the widget, select a name, language, background and foreground color. When done, you'll be given four codes: an embedding code, a pop-up code, text link code, and also a standard URL to join the room. Free to use.
   http://www.parachat.com/basic/get-yours.html





4. Talkvue
   
   Talkvue is a multi-user video conferencing system designed to work completely within your web browser. You can have unlimited voice and video conferencing from your desktop with up to six people in each video conference room. It costs $30/year, and it works on Windows, Mac, and Linux.
   https://talkvue.com/