This presentation introduces various third-party free RF software tools, which are useful for studying and evaluating basic RF concepts that lead to an actual RF design project. RF evaluation software tooling is not only useful for new RF applications development but can also help solve the mysterious real-world issues with better theoretical explanations. This presentation will discuss application examples with step-by-step tutorials, including the basics of impedance matching, RF circuit simulation, beamforming and TDR concepts utilizing free software, including SimSmith, Qucs, MATLAB (Octave), and LTspice.