Mike Engelhardt

Mike Thomas Engelhardt is an American computer programmer, author, and entrepreneur. He is renowned for developing the SPICE-based analog electronic circuit simulator computer software known as LTspice and QSPICE.

Personal life
Mike grew up in rural Michigan. His college degrees are: Bachelors in Physics (1981) from University of Michigan (Ann Arbor, Michigan, United States); Masters in Physics (1983) from University of California, Berkeley (Berkeley, California, United States).

He was Director of Simulation Development at Linear Technology, employed from March 1998 to December 2019.

He is currently a managing member of Marcus Aurelius Software, which was started in January 2020.

Software
Mike has written simulators since 1975. The following is a list of software which Mike was either the sole or primary developer:
 * 1992 – First known port of SPICE (3E2) to Linux.
 * 1998 – SwitcherCAD released internally at Linear Technology.
 * 1999 – SwitcherCAD III released to public. It ran on Windows 95, 98, 98SE, ME, NT4.0, 2K, XP.
 * 2008 – LTspice IV released. It ran on Windows 2K, XP, Vista, 7.  A native macOS 10.7+ application was introduced in 2013.
 * 2016 – LTspice XVII released. It ran on 32 or 64-bit Windows 7, 8, 8.1, 10; and macOS 10.9+.
 * 2023 – QSPICE beta released. Initially, it is designed to run on Windows 10 and 11.