Burp Suite is a set of Burp tools that is used for network security vulnerability check .It provides handling HTTP requests, authentication, downstream proxies, logging, alerting etc.You can download Burp Suite, below.
The Samurai Web Testing Framework is a live linux security environment that has been pre-configured to function for web pen-testing. It contains open source and free tools that focus on testing and attacking websites. It is used with CD. You can download Samurai Web Testing Framework, below.
Acunetix is a web vulnerability scanner that scans and finds out the website’s vulnerability. This multi-threaded tool crawls a website and finds out malicious Cross-site Scripting, SQL injection, and other vulnerabilities. You can download Acunetix, below.