i would like to allow my company employee, to connect from outside office to our server using the browser. Does exists some product that emulate a 'virtual web desktop' (like an RDP session, for example) which allow to lunch our company standard software (Office, our ERP ...), browse files and folder ... without the 'limitation' of a web... so again like an RDP ? Thanks in advance
Yes, there's an entire class of products build around this use case. Citrix XenApp, VMware View, or a straight-up MS Remote Desktop Gateway?
Open Source alternative is called VNC. VNC also has a option to run as a web server / web service (although it still loads an applet or something).
Take a look at TightVNC. Best part is, you can find a server and/or client for just about any platform.
I think Oracle Secure Global Desktop [1] (ex. Sun, ex. Tarantella, ex. SCO) provides you with what you are looking for. Applications can be accessed using a web interface. There's no need to install additional Software (although a JRE is required, I guess). Unfortunately it looks like the online demo [2] is no longer accessible.
[1] http://www.oracle.com/us/technologies/virtualization/061996.html [2] https://sgddemo.sun.com/