KTechLab

KTechLab is an IDE for electronic and PIC microcontroller circuit design and simulation; it is a circuit designer with auto-routing and a simulator of common electronic components and logic elements.
KTechLab is free and open-source software licensed under the terms of the GNU GPL.
History.
KTechLab was first developed by David Saxton, who worked on it until 2007. The design ideas and a lot of the current code have been developed by him. He released various versions, up to version 0.3.6.
When David Saxton stated that he wouldn't be able to continue developing the software, KTechLab stalled for a while before
Julian Bäume, Jason Lucas, Zoltan Padrah, Alan Grimes and several others continued his work, releasing version 0.3.7, with more components and bug fixes.
In January 2019, KTechLab was ported to Qt and KDELibs4. The new priority changed to port KTechLab to Qt5 and KF5, accomplished by version 0.50.0.