Have you considered Liferay at all (http://www.liferay.com)? MIT License, open source, java based. You can download it on tomcat and run it without any configuration (using hypersonic) or configure your own database for it (mysql, oracle, postresql, whatever) pretty easily. Free as in beer and speech. In the interest of openness, I am a Liferay employee. I also use Windows, OS X, and Kubuntu with it on a daily basis. It has wikis, message boards, a document repository, web content management, basically anything you would need for a collaborative portal. It also supports multiple communities so you can create different sections for different user groups, ldap connectivity, and many other things. See here for our two offerings: http://www.liferay.com/products Social office is a simple one stop shop for inter office collaboration, Liferay Portal is the same but with a lot more power. It all depends on your needs.

Adobe gets around this problem by offering to convert your random RAW files to DNG (Digital Negative) which it's also pushing on camera manufacturers to adopt. That way in 5 years I won't have Canon, Nikon and Minolta RAW files, all I have are DNG's which is Adobe's RAW format.