This online galleries platform is totally integrated with Lightroom. It helps me to save lot of time with a very efficient workflow.
I retrieve automatically selection and order purchase into Lightroom.
Pixieset - Beautiful photo galleries for photographers and their clients.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Picflow - Online gallery and proofing platform for creative professionals.
Anchor CMS - Free and lightweight blogging system
SmugMug - SmugMug is a platform that allows amateurs and professional photographers to host their pictures and create a virtual gallery for promoting and selling their work.
Textpattern - Textpattern is an elegant content management system that is free, open source software.