Encuestame is an open source CMS to make several type of surveys, based on massive distribution on social network, email, web and mobile versions, geolocation features, syndication, graphs, beautiful email templates and a modern user interface.
PubNub makes Real-time Real Easy with a Simple Communications API. Two Functions: Send/Receive (Publish/Subscribe). We provide a web-service API for businesses to build scalable Data Push communication apps on Mobile, Tablet and Web. Bidirectional JSON. @PubNub - IRC #pubnub @ freenode.net
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. CKAN makes it easy to publish, share and use data. It powers the http://thedatahub.org/ and http://data.gov.uk/ among many other sites.