Ask HN: what PaaS add-on galeries are out there?

I only know following: 1. Heroku Add-ons: https://addons.heroku.com/ 2. EngineYard Cloud Products Add-ons: http://www.engineyard.com/partners/platform-services 3. MS Azure Store: http://www.windowsazure.com/en-us/store/overview/ 4. Amazon AWS Marketplace (not really PaaS, but close): https://aws.amazon.com/marketplace Any others?