eLogSim is an event driven, 4-level (0,X,1,Z) digital circuit simulator. It uses a test oriented stimulus approach and offers a statistical (or exhaustive if it makes sense) fault simulation option. eLogSim has a simple GUI and is pre-compiled for Ubuntu 20, Mint 20, CentOS 8, openSUSE 15, FreeBSD 12, Solaris 11, Windows 10/11 & Raspbian/Raspberry PiOS Buster (32/64bit) & Ubuntu-MATE 20.04 (64 bit) operating systems. Cross platform & -network, concurrent fault simulation now available...