A .NET open source content management system and web application development framework
Umbraco is an open-source content management system platform for publishing content on the World Wide Web and intranets
"Consider umbraco its architecture is definitely better than dotnetnuke s"
from question "Advantage and Disadvantage of N2CMS"
"I also had good result with umbraco cms it s a bit more lean than dotnetnuke but not as user friendly and definitely not as popular"
from question ".net cms option with main page login function to pull from back end database"