Anything related to LTSpice. LTspice is a SPICE simulation, schematic capture and waveform viewer program from Linear Technology. LTspice is freeware with very liberal license, it is lightweight and isn't crippled in any way.
Anything related to LTSpice LTspice is a SPICE simulation, schematic capture and waveform viewer program from Linear Technology.
LTspice is completely free and has no limitations (no max number of parts, for example, like the free crippled version of other commercial simulators). It is one of the best simulators around (it is used by Linear Technology for in-house simulations - it is no toy). The program is lightweight (~40MB installed), works under Windows and was developed to be run in Linux under WINE. The license is very liberal: you can even use it for commercial purposes without permission from Linear Technology, as long as you are not a competitor in the market of chip manufacturing.