About CCL

Crystal Class Library® (CCL) is a scalable cross-platform application framework for development in modern C++, supporting all major desktop and mobile platforms, as well as RTOS and bare metal systems. Continuously evolving for over 25 years, it's currently used in 40+ professional products and running daily in more than 250,000 embedded devices.

The first version of CCL was created by Matthias Juwan in 1999. The framework is distributed and maintained by CCL Software Licensing GmbH based in Hamburg, Germany. PreSonus is a contributor since 2009.

History

2026

CCL 5 is released as open source under a dual-licensing model (commercial and AGPLv3).

2023

CCL is distributed and maintained by CCL Software Licensing GmbH.

2019

20th anniversary of CCL coinciding with the 10th anniversary of PreSonus' flagship application Studio One based on the framework.

2015

New High-DPI graphics engine based on Direct2D. Initial support for Android platform.

2012

Initial support for iOS platform, multi-touch, and embedded Linux.

2009

10th anniversary of CCL. The framework is licensed to PreSonus Software Limited.

2006

CCL is licensed to KristalLabs Software Limited, a start-up company co-founded by Matthias Juwan.

2004

CCL version 3 for K2 project with initial support for the Mac platform.

2002

CCL version 2 for Cash Manager 2 and KRISTAL Audio Engine freeware applications.

1999

First version of CCL for the Windows platform developed by Matthias Juwan for his diploma thesis at engineering school.