FileInvite - Stop chasing your clients for documents! Easily request files, documents, forms & signatures from your clients – set a due date and save hours as your requests are returned to you effortlessly.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
iDeals Virtual Data Room - iDeals Virtual Data Room is a tool that provides secure access to large amount of confidential documents and can view, analyze and collaborate in a protected environment.
Anchor CMS - Free and lightweight blogging system
Clinked - White-label Client and Team Workspace
Textpattern - Textpattern is an elegant content management system that is free, open source software.