Dot Gov Domains is an Angular-based project intended to create a visually accessible means of sifting through data pertaining to federal and state .gov (and fed.us) domains. Data used in the project comes from the GSA's .Gov Domains API and 18F's HTTPS pulse project. Although the data has been vetted and updated, there may still be some signficant errors.
This project falls under the MIT license. Feel free to suggest improvements, fork the project, create your a version for your own government's variant of .gov.