https://web.archive.org/web/20230214034946/http://www.spectr...

For learning, the current LTSpice models and QUCS VNA profiled device imported simulation data are reasonable tools as well.

I used KiCad all the time for personal projects, and it has recently already addressed the major issues people found annoying:

1. unstable library version dependency management

2. complex design collaboration over traditional versioning tools like git (still an upstream feature last I checked, but should be available soon.)

3. freezing the specific KiCad and library path structure versions across a project, as assuming every design has a single workstation workflow is a contradictory goal

KiCad is better than most current EDA software, but that is mostly a sad reflection on the traditional tools available. =3