In case you don't know Micro-Cap, it is a good circuit simulator and used to be sold for $4500. The company is Spectrum Software and has been closed (out of business). Spectrum Software did something very unamerican: It put its latest software free to download and to use.
Please try this fully working software here:
http://www.spectrum-soft.com/download/download.shtm
If you find it is good, don't forget giving thanks to Spectrum Software.