The list of possible solutions that can be embedded as custom add-in modules is seemingly endless. Pretty much any custom web application with a user interface can be embedded. Here are a few examples:
Order processing solutions.
Business dashboards that tunnel into your existing databases.
Forced workflow solutions.
Employee time tracking.
Six Sigma solutions.
Call center management.
Billing solutions that extract information from your existing systems.
Document distribution and collaboration.
Cost estimating, hours tracking per job, and dynamic profit-loss tracking per job.