Description: Debuggex is a free online visual regex tester. It allows you to visually construct regex patterns and test them against input strings to see if there is a match.
Type: software
Pricing: Free
Description: KiCad is an open source electronics design automation software suite used for schematic capture, printed circuit board design, and more. It is cross-platform and licensed under GNU GPL v3.
Type: software
Pricing: Open Source