There are 2 repositories under multi-touch topic.
JavaScript drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers (and also IE9+)
noUiSlider is a lightweight, ARIA-accessible JavaScript range slider with multi-touch and keyboard support. It is fully GPU animated: no reflows, so it is fast; even on older devices. It also fits wonderfully in responsive designs and has no dependencies.
Linux multi-touch gesture recognizer
The desktop application to configure Touchégg
computer vision framework for tangible interactive surfaces
Material Design ripples with jQuery
i2c to usb hid multi touch with stm32
Windows 8/10 TUIO touch injection
Windows Multitouch Injection Plugin for Unity.
Multitouch support for touchpads.
Multi-Touch XAML Behaviors implementing Multi-Touch Manipulation (Gestures) and Inertia.
A collection view subview for handling multiple continues touches on cells.
Multi-Touch Gestures for Android
Multi touch API for Linux on Java
Touch screen MIDI button controller
L58 Multi-Touch MicroPython Module
Tangible User Interface (TUI) - formerly touchAll - a Flash as3 framework that allows quick development of applications, with multi-touch, gestures, and fiducials, either through UDP, TCP, or Local Connection.
Windows Touch Gestures
Multi-touch computer-assisted language learning system. Designed for supporting the tandem language learning method.
Multi-touch attribution models to determine the channels that lead to greater customer conversions.
000 CALL: PLAY(tenput, YOU)
A library for supporting web-based multi-user apps for natural user interfaces.
a cross platform Multi-Touch library that aims to provide a unified Multi-Touch API