6 best C Machine Learning libraries in 2025

Nowadays, machine learning has attracted a lot of attention, and it is being used in various fields such as business applications, scientific research, and many more. The C language is a very powerful programming language and is widely used by most programmers. It is essential to understand the use of C in machine learning. There are many libraries available for machine learning in C. A few of the most popular open source libraries for developers are: C - various algorithms in mathematics, machine learning; Catboost - A fast, scalable, high-performance Gradient Boosting on Decision Trees library, used for ranking, classification, regression, and other machine learning; Gpdb - opensource massively parallel data platform. Check out the list of free, open source libraries to help you with your projects.