Not all autoclickers are equal. Exelon stands out for the following reasons:
Because Exelon is open source on GitHub, the Minecraft community has vetted it. There are no hidden "miners" or keyloggers, which is a massive risk with random "Free autoclicker.exe" files found on YouTube. Exelon Minecraft Autoclicker 1.8.9
Minecraft 1.8.9 often runs at a higher permission level. If Exelon isn't clicking in-game: Not all autoclickers are equal