Coolors, Colorsinspo, Adobe Color CC, ColorFish Color Picker, Happy Hues, ColorZilla, Paletton, Color Hunt, TinEye Color extraction, Colllor, Pictaculous, COLOURlovers, Material Palette, cyotek color pallete editor, Color Palette Importer, Color Grabber, Pikka, Colordrop, stylize.io, ColorWiki, ColorExplorer, Clr.yt, Colorwheely, ColorsWall, Rain Design Source, Color hexa, sK1 Color Picker, Show My Colors, Save My Palette, Colorius, Picular, ColRD, iWantHue, ColoRotate are some alternatives to SwatchBooker.