cweditor writes: ESRI formally unveiled organizational subscriptions for ArcGIS online, in beta since December. ArcGIS online now lets you turn data into a map service with or without a GIS server and adds tools for application development, including both native and HTML 5 support for Android and iOS. Free personal, non-commercial ArcGIS Online accounts continue, but only let you use map services, not create them, and don't include app dev tools.
cweditor writes: Several public agencies are using the beta open-source project Weave to put data visualization and analysis into the hands of planners, community activitists and other citizens. Metro Boston's DataCommon rolled out last month, allowing users to build dataviz dashboards where mousing over one visualization module also highlights or slices data in others. Portals in Connecticut, Rhode Island and Arizona, among other places, are under development. More Weave refinements are on the way, says the project head, including real-time collaboration and connecting maps with collections of documents (whether or not they've been geocoded).
cweditor writes: "Tools to extract and display useful information from mountains of data — and then display those results in a meaningful way — can often be pricey, but there are a number of compelling alternatives that are free."