a href="http://www.biosolveit.de/SeeSAR/">SeeSAR version 1.6 has been released. It covers:

The ability to change the charge of an Atom (+/-) and to protect such change against ProToss (this is the automated protonation/tautomerism to optimize the overall H-bonding network) overwrite

Improved table: pM affinity, in/exclude multiple columns, the pose-specific context-menu, quick-find molecules including a 2D popup rendering, this can be very useful when trying to work out the structure from a 3D conformation.

There is a review of an early version of the software here