Photo credit: Juri

1. Adobe Share: Web-based service allows you to upload and share your documents online
2. Ring-to Number: Create a widget and allow peopl to call you without giving out your number
3. Heysan: Connect on multiple instant messaging networks right from your mobile phone
4. Chatango: Create and embed your own chatroom on your website and interact with your visitors

1. Adobe Share
   
   Adobe Share is a web-based service that allows you to upload and share files. You can distribute the URL for the file to a selected number of users, post the link for the URL on a website, or embed the code for previewing the file in a web page. You have the option to allow recipients to invite others to view your shared files or limit access to only the specified recipients. Requires an Adobe ID.
   https://share.adobe.com/





2. Ring-to Number
   
   Ring-To number is a web-site that lets you create a widget that lets people call you directly without giving them your actual phone number. After you register and select a plan (Free or Premium), you just have to insert your real number once, put the widget on your site, and no one will ever need your number again to call you. Instead they need to call a new number that enables them to connect with you.
   http://www.ringtonumber.com/





3. Heysan
   
   Heysan is a mobile web-based multi-protocol instant messenger. From any phone that can access the internet, you are able to connect and chat with your buddies on MSN, Yahoo!, Google Talk, ICQ and AIM networks, with no need to install anything on your phone. Just go onhttp://m.heysan.com, type your credentials, and click connect. Completely web-based and free.
   http://www.heysan.com/





4. Chatango
   
   Chatango is an online service that enables you to create your own embeddable chat room. You can pick between a private one-on-one chat between one page visitors and youu, or you can create a public chat where all the visitors can chat with each other, and with you. As a group owner, you can block people from your group, and delete messages from it. Free to use.
   http://www.chatango.com/