See also
Impacket
Open Source Kali

Collection of Python classes for working with network protocols. Includes tools for SMB, MSRPC, LDAP…
Retire.js
Open Source

Detects the use of JavaScript libraries with known vulnerabilities. Available as a CLI tool, browser…
BeEF
Open Source Kali

Browser Exploitation Framework. Hooks web browsers via JavaScript and provides extensive command mod…
BlackFriday-GPTs-Prompts
Open Source

List of free GPTs that doesn't require plus subscription…
Nishang
Open Source Kali

Framework and collection of PowerShell scripts and payloads for offensive security and post-exploita…
Burp Suite Extensions (BApp Store)
Freemium

Marketplace of extensions for Burp Suite covering active/passive scanning, custom insertion points, …