OP AUTO CLICKER | Automate mouse clicks

Features
Choose whether to follow your cursor or click at a fixed spot
Set the amount of times to click (or unlimited)
Choose between which mouse button to click as
Pick between single clicking, double clicking or triple clicking
Change the hotkeys
Convenient – Hotkeys work while application is in background
Settings are saved (includes last fixed location)
Free and Open Source
Clean User Interface
Low CPU usage
Portable
No advertisements or malware
Virus Free (The amount of autoclickers with viruses out there are uncountable)

Source : https://www.opautoclicker.com/