Data Visualization Platform Weave Now Open Source

Weave — Web-based Analysis and Visualization Environment — was developed at the University of Massachusetts Lowell's Institute for Visualization and Perception Research (IVPR) under Georges Grinstein, with funding through the Open Indicators Consortium of state and metropolitan-area data agencies. The platform let analysts compose linked, interactive visualisations from heterogeneous data sources — a configuration that in 2012 wasn't yet trivial in the open-source ecosystem, where d3.js (released that year by Mike Bostock) was just beginning to displace earlier tools like Protovis and Processing.js.

The February 2012 open-source release was significant because Weave's earlier deployments had been institutional — used by the Boston Indicators Project, the Connecticut Data Collaborative, and similar regional civic-data programmes. Going GPL meant smaller cities, university researchers, and civic-tech volunteers could deploy it without licensing arrangements. The release coincided with a broader 2011–2012 shift toward Apache- and GPL-licensed civic-analysis stacks, including OpenRefine (Google's then-recently-released metadata cleanup tool) and CKAN (the Open Knowledge Foundation's data portal software).

Weave's lineage runs through a particular thread of civic data work — community-indicator projects, public-health dashboards, school-quality reporting — that didn't always show up on the more visible Code for America / open-data conference circuit but produced some of the most operationally durable tooling of the era.