Online tutoring platform

I am looking for a programmer and web designer who can create for me a browser based tutoring platform.I am not mainly concerned with the website development but the actual web-application which allows two people to connect from two different computers and work together on school work. I want the application to have (1)audio/video stream plugin (2)PDF [login to view URL], (3)Chatbox plugin (4) Online whiteboard plugin and (5)live word document plugin (1) For the initial stages of my project it can be just audio communication between the users. I want there to be at least 4 people able to communicate live with each other. (2) The PDF viewer plugin is a very important part of the [login to view URL] will use this pdf viewer to upload their lecture notes or assignments and discuss it with their tutor. Users should be able to upload powerpoint, microsoft word documents, or images and that should be seen on the platform as a PDF. It is also important that all users have the ability to annotate, leave marks, or notes on this pdf LIVE (3)This is a normal chatbox. Should allow instant messaging between users using the application (4)Online Whiteboard plugin. This is just a a white space where students can draw, write or doodle on it. Think of it as a microsoft paint shared LIVE between users using the application. (5)Live word document plugin: I would like this feature to be used to write text and documents together between users LIVE. Google docs has something exactly like this There are many tutoring platforms on the [login to view URL] can look at the tutor platform available at [login to view URL] The important thing is that this software must be browser based and NOT a software requiring external installation. There is also an image below to give you an iea of how I want the web-application to look like. If you have the experience and skills to complete this job please contact me.