The bootstrap_form gem makes it easy to build beautiful forms with Bootstrap styles using the built-in Rails form helpers. The project has been around for several years and has over 1MM downloads. This year, after a brief hiatus, we are revamping bootstrap_form to support Bootstrap v4 and planning a big release. If you use bootstrap_form today, take a look at our roadmap to 4.0. We are always happy to welcome new contributors!