If you REALLY need to manage the Notes client...for migrations, for local db discovery, for settings management, for workspace and bookmark management, for management of just about everything you can think of...then there's only 1 piece of software that is worth looking at, the MarvelClient from panagenda. It is the defacto standard, and we have personally sold it into dozens of Notes/Domino shops.

Panagenda also has other great tools for pro-active network analysis, iDNA, and application monitoring and troubleshooting with Greenlight. Some of the smartest people we know crank away the code at panagenda, and any large scale Notes Domino environment will benefit from their tools.