Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Color Hunt - Curated collection of beautiful colors, updated daily
Sketch - Professional digital design for Mac.
Material Palette - Generate and export your Material Design color palette
Affinity Designer - Professional creative software, exclusively for Mac.
Coolors.co - The super fast color schemes generator! Create, save and share perfect palettes in seconds!