The Plugin Overview Page lists most of the plugins that are currently available for Nucleus CMS. Since that is becoming quite a long list, we'll try to categorize them here:
First of all, let's dive into the plugins that can enhance the Nucleus workflow.
From inside Nucleus, you can write drafts, publish items and edit those. But the core doesn't provide a 'Pending' feature. With the MoveToDrafts plugin (link to the Nucleus forum) you can move published items back to the 'Draft' status. Furthermore
With the ShowDrafts plugin, you can show all drafts that are being written, per writer (e.g. a Nucleus blog member). If you combine that with conditional statements, only site members can view the items other site members are working on.
With NP_AdmTools you can copy (duplicate) items from one blog to another. These have to be part of the same Nucleus installation, off course.
On the FAQ site, you can already find a guide to combatting comment and trackback spam using spam prevention plugins.
….To be continued….