Pluralinput!

TeamPlayer gives you multiple cursor on screen of your own PC for every mouse connected. It's generic, so it works with any program. Simply hook up multiple mice to your computer and work together, using any application.

Instantly changes settings when any mouse is used: swap buttons mirror cursor adjust speeds and more...Leave multiple mice on a pc and automatically swap buttons on each mouse.Have a left-handed and a right-handed mouse always connected and ready to use.Match speeds across different mice, ie touchpad and mouse with different speeds.Accommodate left and right handed users easily on multi-user or public workstations.Helps prevent RSI/injury issues by allowing seemless switching between hands.Quickly change mouse settings from system tray if only one mouse is usedFreeware! no ads, no nags, free software, suggestions appreciated!Always virus, malware, and spyware free...Tested on: Windows 10, 8.1, 8, 7, Vista, and XP »

BeTwin is a software that enables two to five users to share the computing power of a single computer. It creates a virtual PC station for each user to simultaneously and independently operate in each station. Installation is simple. Install a second display adapter (video card) and connect it to the second monitor. Plug in a USB mouse, USB keyboard and, optionally, USB speakers. Finally, install the BeTwin software.

Scans for mouse/touchpad devices being added or removed and automatically changes mouse speed - you can virtually have different mouse speed settings for touchpad and external mouse.