There are 2 repositories under minecraft-autoclicker topic.
Auto Key Clicker for Minecraft - Under request from Xisuma
AutoClicker with the ability of hooking directly into a process
GUI Python Linux Minecraft PVP AutoClicker
Linux version of Minecraft autoclicker using xdotool written on bash
Minecraft-Autoclicker by xKenyh but with improvements to bypass staff hack controls
AutoClicker developed in python with ability to click both left and right button
A simple mouse driver that allows mice without double-clicking capabilities to achieve 30+ cps.
Simple auto clicker
an autoclicker written in c++ for windows