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 - [OpenVAS](http://www.openvas.org/) - OpenVAS is a framework of several services and tools offering a comprehensive and powerful vulnerability scanning and vulnerability management solution.
 - [Metasploit Framework](https://github.com/rapid7/metasploit-framework) - A tool for developing and executing exploit code against a remote target machine. Other important sub-projects include the Opcode Database, shellcode archive and related research.
 - [Kali](https://www.kali.org/) - Kali Linux is a Debian-derived Linux distribution designed for digital forensics and penetration testing. Kali Linux is preinstalled with numerous penetration-testing programs, including nmap (a port scanner), Wireshark (a packet analyzer), John the Ripper (a password cracker), and Aircrack-ng (a software suite for penetration-testing wireless LANs).
+- [tsurugi](https://tsurugi-linux.org/) - heavily customized Linux distribution that designed to support DFIR investigations, malware analysis and OSINT activities. It is based on Ubuntu 20.04(64-bit with a 5.15.12 custom kernel)
 - [pig](https://github.com/rafael-santiago/pig) - A Linux packet crafting tool.
 - [scapy](https://github.com/gpotter2/awesome-scapy) - Scapy: the python-based interactive packet manipulation program & library.
 - [Pompem](https://github.com/rfunix/Pompem) - Pompem is an open source tool, which is designed to automate the search for exploits in major databases. Developed in Python, has a system of advanced search, thus facilitating the work of pentesters and ethical hackers. In its current version, performs searches in databases: Exploit-db, 1337day, Packetstorm Security...