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