Appcelerator Titanium is an open-source framework that allows the creation of native mobile apps on platforms including iOS, Android and Windows UWP. Developed by Appcelerator Inc.
License: Open Source
Adobe AIR is primarily focused on multimedia-rich desktop applications, while Appcelerator Titanium emphasizes mobile application development with strong performance. AIR offers a steeper learning curve and is proprietary, whereas Titanium provides faster development cycles and open-source options.