CircuiTikZ TeX/LaTeX package for drawing circuits

Altium Library with 4000 components, IPC compliant footprints, 3D step model

The tool for easy creating electronic component libraries

Schematic symbol libraries for FPGAs & microcontrollers.

KiCad Symbol Library for a variety of MOS, CBM and WDC retro microchips, including the eponymous MOS Technology 6502.

Altium Library with over 4000 components, IPC compliant footprints, including 3D step model

KiCad schematic symbols and footprints for various projects.

An asset which include circuit symbols for drawing schematics and block diagrams with Affinity Designer

KiCad repo for schematic symbols I've made.

Circuit symbols for drawing schematics and block diagrams with Inkscape

SchemaLib is a library of SVG symbols for drawing schematics of analog and mixed-signal (AMS) integrated circuits with Inkscape.

Schematic symbols and PCB footprints for various devices in ExpressPCB (mostly simple debug board but includes some older large designs).

Parts for KiCAD

An Inkscape template for quickly creating circuit diagrams, block diagrams etc.

An API for the placement of parts into a diptrace schematic using the ascii import function

Python KiCAD library parser/generator