Please add MIcrocap
Micro-Cap is a SPICE compatible analog/digital circuit simulator with an integrated schematic editor that provides an interactive sketch and simulate environment for electronics engineers. It was developed by Spectrum Software and is currently at version 12.
In July 2019, Spectrum Software closed down and Micro-Cap was released as freeware, and they no longer provide technical support or software updates. Previously, Micro-Cap was only available under a paid commercial license.
As its freeware and no updates are coming i think it should be relativley easy to maintain.