sonar is a linting tool for the web and is built on top of some of the popular tools you may already be using like ESLint for code linting, aXe for accessibility testing and a number of others.
By leveraging existing tools and communities, sonar hopes to bring more awareness to the use of those projects and further promote the collaborative environment they are building around sonar itself. For more information, check out https://sonarwhal.com, follow @narwhalnellie on Twitter and contribute to the project on GitHub.