Here I have listed very useful XSS things
XSS is a vulnerability basically
XSS ENCODER: http://evuln.com/tools/xss-encoder/
XSS Payloads: https://github.com/payloadbox/xss-payload-list
XSS Filters: https://cheatsheetseries.owasp.org/cheatsheets/XSS_Filter_Evasion_Cheat_Sheet.html
XSS is a vulnerability basically
XSS ENCODER: http://evuln.com/tools/xss-encoder/
XSS Payloads: https://github.com/payloadbox/xss-payload-list
XSS Filters: https://cheatsheetseries.owasp.org/cheatsheets/XSS_Filter_Evasion_Cheat_Sheet.html