LifeRay alternative in asp.net c#

I have explored some of the features of LifeRay from past few months. But due to high on hardware and development resource I would not want to go with LifeRay. Is there any g开发者_运维技巧ood alternative to liferay in asp.net c#. I have seen following CMS application similar to LifeRay. Just want to know if someone has used it.

1. AxCMS.Net
2. Umbraco CMS
3. DotNetNuke

Thanks, Piyush

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We've been throwing around a few of those terms in our office and nearly settled for Umbraco. I think we were satisfied with it but in the end decided to go towards Drupal because of it's wider user-base and support.