List of Offensive Security Tools

Virtual machines

• Kali Linux - OS for PenTesters.
• Commando-VM - customisable Windows-based distro for PenTesters. 

GitHub Repos

• Windows Exploit Suggester - Next Generation
• ShredKit - Red Team Tool Kit

Blogs

• Hacking Articles
• Naked Security

Learning Platforms

• Adversary.io - Cyber Security Training for Development Teams

Penetration Testing Tools

• Metasploit - Exploit Software
• sqlmap - SQL injection and database takeover tool
• THC Hydra – SecTools Top Network Security Tools
• hashcat - Advanced password recovery
• John the Ripper - Password cracker
• The Social-Engineer Toolkit (SET)  - A social engineering tool from TrustedSec.
• WPScan - A WordPress Vulnerability Scanner

Web Vulnerability Assessment Tools

• Burp Suite - Cybersecurity Software from PortSwigger
• Nikto2  - A web vulnerability scanner
• Netsparker - Web Application Security Solution
• OWASP ZAP
• Fiddler - Free Web Debugging Proxy - Telerik
• w3af - Open Source Web Application Security Scanner

Network Security Assessment

• Nessus - Network Security Assessment
• Nmap - the Network Mapper - Free Security Scanner
• OpenVAS - OpenVAS - Open Vulnerability Assessment Scanner

Information Gathering Tools

• Shodan
• DNSdumpster - DNS recon and research, find and lookup DNS records - 
• Censys