This page provides links to software tools produced by the CredibilityCommons group. We are producing a wide range of software to support people in finding and assessing the credibility of information online, including search engines, browser plug-ins and online games.

We believe in a community-supported development model. Tools that we create will be released early in the development cycle, and will be shaped in part by community feedback. When possible, we will post the source code and datasets used by our tools.

Click the links below to visit the home pages of our current software projects.

ACE: Automated Credibility Evaluator. A web-based tool to detect signs of trustworthy information using a site checklist model.

Credibility Toolbar. A web application that allows users to rate the credibility of web sites, and see ratings submitted by others.

OpenQA. A software platform designed to support collaborative discourse and question answering.

Reference Extract. A search engine that uses verified web sites drawn from reference library transactions.

Search Engine Face-Off. A fun tool to compare how different search engines produce different quality results.