如何为小型网站选择CMS / Portal解决方案？

I currently maintain 3 websites all revolving around the same concept. 2 of them are WinForms applications where the website gives a few basic details, and download links. The third is a web application to query data. I also have a forum (SMF/TinyPortal) that has been serving as a tech support/news hub for the three sites. The download traffic is decent, but I don't get a lot of hits on the support forumsI currently maintain 3 websites all revolving a