Boston is a minimalist and functional icon theme focused on basic shapes, a reduced color palette and visual hierarchy.
Newaita Icons
Linux icon theme
Numix Icons
Beautiful icons for Linux
Obsidiaanse ikone
Gnome Icon Pack based upon Faenza, optimized for dark themes
Qogir-ikone
A flat colorful design icon theme for linux desktops
Vimix-ikone
Vimix icon theme is based on Paper-Icon-Theme
Xenlism-ikone
Wildfire is an icon theme for any system.
Sardi Icons
Circle-style and minimalist icons
Zafiro Icons
Minimalist icons created with the flat-desing technique, utilizing washed out colors and always accompanied by white.
Paper Icons
Paper is a modern freedesktop icon theme whose design is based around the use of bold colours and simple geometric shapes to compose icons.