For more than a decade, the Nmap Project has been cataloguing the network security community’s favourite tools. Since 2011 the site offers ratings, reviews, searching, and sorting. The SecTools.org website provides information on open source and commercial tools on any platform. You can also find tools they maintain on its Nmap.org website (such as the Nmap Security Scanner, Ncat network connector, and Nping packet manipulator).
I highly recommend perusing the category list. Click any category for details on related applications.
- Antimalware (3)
- Application-specific scanners (3)
- Webbrowser–related (4)
- Encryption tools (8)
- Debuggers (5)
- Firewalls (2)
- Forensics (4)
- Fuzzers (4)
- General-purpose tools (8)
- Intrusion detection systems (6)
- Packet crafting tools (6)
- Password auditing (12)
- Port scanners (4)
- Rootkit detectors (5)
- Security-oriented operating systems (5)
- Packet sniffers (14)
- Vulnerability exploitation tools (11)
- Traffic monitoring tools (10)
- Vulnerability scanners (11)
- Web proxies (4)
- Web vulnerability scanners (20)
- Wireless tools (5)