Forensic tool to recommend?



Hi All,

I am evaluating some tools for gathering evidence in Linux and Windows distros.

In particular I am interested in recovering files/folders which have
been deleted "accidentally" from the PC.

I am aware there are some Live CD's with Linux installed that could
mount a drive and try to recover those files but don't know anyone in
particular.

Any help will be really appreciated.

Thank you very much.

Greetings,

Fabio