This tool will help in generating reverse shells easily for all types of OS.

PHP WebShell By ./EcchiExploit

This is a very simple interactive web shell

Simple Command Shell

php-chankro command bypass php shell

Secured and Hidden Single-file PHP shell

DoS shell in PHP --- Methods: UDP, TCP, HTTP, and TLS exhaustion

Web PHP Console

PHP shell code in clear text;

.NET shell booter - compatible with Waive DoS Shell