I've been playing with Omeka to build a digital archive for Lyle. You can see some examples I have loaded up on http://archive.lyle.mn. Omeka is built to be a digital archive CMS and it is used by many leading libraries and historical institutions. The rest of lyle.mn and lylealumni.com use drupal which I prefer from a technical standpoint. But Omeka offers a lot of nice features right out of the box for archives, including a wiki-based crowd-sourced transcription platform called Scripto. I'm considering having any digital artifact live in Omeka with all extracted data (people, places, stats, etc.) living in Drupal with links back to Omeka for reference.