Gpick

Exchanging colors between GIMP, Inkscape and Gpick
by Alexandre Prokoudine

The review of Gpick mentioned that you can drop colors from Gpick to either Inkscape or GIMP. What it doesn't mention is that you can freely drag and drop colors between those three applications.

Creating harmonic color schemes with Gpick
by Alexandre Prokoudine

This is an introduction to creating harmonic color schemes with Gpick, an advanced free color picker

Gpick 0.1.9 released with two new harmonic schemes
by Alexandre Prokoudine

A new version of standalone advanced color picker Gpick is out with several considerable improvements.

Gpick gets color schemes generation
by Alexandre Prokoudine

New version of color picker Gpick is out with new features and fixes.