Digital ForensicsTools : Top 20

The digital forensics are the highly specialized field. The tools are customized and easy to use. 

• Only thing you require is a lot of will power, dedication and lots of computing power and space in your system.
• You can explore the in-depth information about what’s “under the hood” of a system.
•  Happy hunting.

The fields it can be implemented are

1. Internal human resources case, 
2. Investigation into unauthorized access to a server, 
3. You just want to learn a new skill, 
4. Conduct memory forensic analysis,
5. Hard drive forensic analysis, 
6. Forensic image exploration,
7. Forensic imaging and 
8. Mobile forensics. .

 http://www.gfi.com/blog/top-20-free-digital-forensic-investigation-tools-for-sysadmins/#sthash.l5vach7I.dpuf