GUI and command line tools for advanced users and administrators:
wxdkdraw - Minimalistic drawing application for use with LaTeX,
wxd2lat - Convert wxdkdraw files to LaTeX,
bitmap2pp - Convert PNG/JPEG/TIFF/NetPBM to (E)PS or PDF,
fig2lat - Convert XFig files to LaTeX,
htmlbook - publish HTML like a book,
dkcpre - C debugging and tracing preprocessor,
itadmin - manage your IT using a MySQL/MariaDB database,
dk-fic - file integrity checker,
dk-ls - list files, output column order is...
Free drawing software for Windows, Mac OS X, and Linux
...More than a thousand readymade objects help to draw professional diagrams. Dia can read and write a number of different raster and vector image formats. Software developers and database specialists can use Dia as a CASE tool to generate code skeletons from their drawings. Dia can be scripted and extended using Python.
...It makes quick svg images that can be displayed in a browser and reopened and reedited as a schematic. Hyperlinks can also be added to link to data sheets or source code. It is a simple xml based drawing program .