The project tasks will include the following:
1) To port the extension to the latest version of all the other mentioned browsers. (firefox / IE / Safari)
2) Register developer app id's where needed and ready each extension for publishing.
3) Provide the source code for each extension.
With regards to the development of the IE extension you will be using a .NET RAD framework to complete the job.
To get the source code of the extension you will need to sign an NDA. The total lines of code contained in it is 752 lines including code spacing lines, comments and debug logging statements, so this is not a simple project but has very long term potential. I will only provide the password to interested parties. You might be requested to sign a non-disclosure agreement.
Bids below $250 would be considered first.