NLControl is a software project addressing Non-Linear Control systems and developed in the Control System Department of the Institute of Cybernetics at Tallinn University of Technology. The purpose of the NLControl website is to provide the symbolic computational tools that assist the solution of different modeling, analysis, and synthesis problems for nonlinear control systems. The majority of provided tools rely on the algebraic approach of differential one-forms and the related methods based on the theory of the skew polynomial rings. The functions on the website address both discrete- and continuous-time systems as well as systems, defined on the homogeneous time scales. The developed functions allow to examine the systems described either by the input-output or the state/output equations. The programs are implemented within the computer algebra system Mathematica and made available online via the webMathematica software.