Did not find this in search here. Spectrum Soft has closed its doors after 39 years, and has released the latest version of Micro-Cap for everyone to use for free. No license key required. Micro-Cap was >$4000/seat not to be confused with free stuff. "Micro-Cap 12 is an integrated schematic editor and mixed analog/digital simulator that provides an interactive sketch and simulate environment for electronics engineers. Since its original release in 1982, Micro-Cap has been steadily expanded and improved. Micro-Cap 12, the twelfth generation, blends a modern, intuitive interface with robust numerical algorithms to produce unparalleled levels of simulation power and ease of use. Nothing else comes close. " http://www.spectrum-soft.com/index.shtm
