We need a programmer to make a plugin for wordpress

Our need is to make a plug in or something like that to do that.

In a private area (different for every client) we would like to have some butons or links to other sites with predifind credentials, so just pressing the in or the button to log in into the site will be redirectet.

Man of our client are members in many sites (gov, hobby, bussines, etc) the don;t want to remeber credentials for every one of it, so we let them login in, in a private area, and there the only think they have to to do is just press a button or a link and autonaticaly redirect in the specify site, and a routine will auto fill the credentials and login.

The posibility to have a frame of the site (in the private area) maybe will help.