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
B4X focuses on simplicity and ease of use for cross-platform development, making it ideal for less complex apps, while Appcelerator Titanium offers native performance and a more robust API, suitable for more complex applications.