BuddyPress: Last Active Column on the Users Screen
Adds a "Last active" column to the WordPress Users screen using BuddyPress's activity tracking, so you can see who is actually using the community.
Snippet Library
Users snippets for WordPress
Snippets for user accounts, roles and profiles: extra profile fields, new columns in the users list, last-login tracking and tighter control of what each role can do. Handy for membership sites, client sites and teams with many authors.