My team and I released Bearer a couple of weeks ago, a newer open and free alternative to Brakeman to check your code for security and privacy risks. In addition to Ruby/Rails, we also cover your JS/TS code, which allows you to use a single solution for your whole Rails application.
Bearer runs as a CLI, in your terminal, or directly in your CI/CD, we provide pre-built templates for GitHub Actions or GitLab CI to make it easy to set up.
Our motivation is to build a great developer-first code security solution, where UX is paramount, from a smooth installation, a fast scan, a high level of precision, comprehensible output, as well as great integrations into your workflow.
Here is the project page if you want to check it out:
Looking forward to your feedback