Up until now, there have not been so many Chrome extensions unlike Firefox ones for Web App Penetration Testing. Thus, this cannot be a comprehensive list. Help posting your favorite add-ons in the comment section. Thank you.
RECONNAISSANCE
- Web Technology Notifier
- Wappalyzer
- Chrome Sniffer (another Wappalyzer;not sniffer by meaning)
- Web Server Notifier
- W3Spy
- Exploit DB latest
- All in one web searcher
- GHDB
- Oracle Code Search
- Port Scanner 1
- Port Scanner 2
SESSION MANAGEMENT
- Session Manager 1
- Session Manager 2
- Session Buddy
- Edit This Cookie
- cookie.txt export
- Swap my cookie
- Cookie Manager
- Remove cookies for site
- Awesome Cookie Manager
- LWP cookie export
HTTP REQUEST REPLAY
- Dev HTTP Client
- Simple REST Client
- Advanced REST client Application
- Request Maker
- Change HTTP Request Header
(SEMI-AUTOMATED) SCANNER
SCRIPTING/MACROS
- Tampermonkey Beta
- Python Shell
- Python Shell (App)
- Python Fiddle
- Lua Shell
- iMacros for Chrome
- Coffee Console (CoffeeScript - http://coffeescript.org/)
- ChroSh
- jsshell
- Simple Form Filler
HTML/JAVASCRIPTING DEBUGGING
- Developer Tools (Chrome Built-in)
- FireBug
- Web Developer
- JsError
- JSONView
- XPath Helper
- PsychoXPath
- JSON Inspector
- Javascript Object Browser
- Tryit Editor
- jQuery Shell
- Javascript Populars
- ChromeAccess
HTML5 STORAGE
ENCODING/DECODING
- d3coder
- Encode Data URL
- Picture Encoder
- Advanced Encoder/Decoder
- JavaScript Tools
- JavaScript Compression Tool
CROSS-BROWSER SIMULATION
- Dummy FileSystemObject
- ActiveX for Chrome
- IE Tab Multi
- IE Tab
- Mozilla Gecko Tab
- FireMobileSimulator
- User-Agent Switcher for Chrome
- User-Agent Switcher
- Ultimate User Agent Switcher
MISC
- Proxy Switchy
- FoxyProxy
- Forget Me
- FlashControl
- W3Launcher
- Angry Code Editor
- Google Project
- Remote Desktop
- FTP Editor
- SSH jcterm
EVIDENCE COLLECTION/DOCUMENTATION
Source: bl0g.yehg.net