A very helpful tool for testing: http://portswigger.net/burp/proxy.html
Also found a large PDF about testing with suggestions for tools https://www.owasp.org/images/5/56/OWASP_Testing_Guide_v3.pdf
More tools listed https://www.owasp.org/index.php/Appendix_A:_Testing_Tools
A very helpful tool for testing: http://portswigger.net/burp/proxy.html