As announced some days ago in the mailing list, Superkb 0.21 was released.
Please let me introduce it for those that don’t know the project yet.
Superkb is a shortcut-based launcher with on-screen graphical hints. It is written in C using Xlib, with the help of Cairo graphics, Pango, Imlib2, Xinerama, etc. and the source code is managed using Git.