Kai-Wei Chang: dual coordinate descent for L1- and L2-loss dual SVM, multi-class (Crammer & Singer), L1-regularized classifiers.

Cho-Jui Hsieh: dual coordinate descent for L1- and L2-loss dual SVM, multi-class (Crammer & Singer), L1-regularized classifiers.

Rong-En Fan: Big helper on all issues.

Guo-Xun Yuan and Chia-Hu Ho: L1-regularized classifiers.

Hsiang-Fu Yu and Fang-Lan Huang: dual coordinate descent for L2-regularized logistic regression

Hsiang-Fu Yu: python interface

Chia-Hua Ho: solvers for linear support vector regression

Chih-Jen Lin: Project lead and maintainer.