Electronic circuit simulators distributed under a free software license are available from several sources and for several computing platforms.
Mixed-signal (analog and digital)
- Infineon Designer, free online, special version of TINAcloud licensed to Infineon Technologies
- LTspice, freeware, developed by Linear Technology and Analog Devices
- Micro-Cap, freeware, developed by Spectrum Software
- PLECS, free for some students, developed by Plexim
- SapWin, freeware
- TINA–TI, freeware, special version of TINA licensed to Texas Instruments