Are there any good products to streamline the code review process and help to increase code quality?

Definitely give Code Climate. Automatically gives new code a grade & identifies code smells/security issues. Takes care of a lot of things manual reviewers would have to check for. Letting a robot do it is much easier.

looks great!

I recommend using a Linter to clean up your style and analyze your code. If you're looking to improve the code of every pull request / merge request then checkout PullRequest. We provide on-demand code review from experts disclaimer: I'm on the team building PullRequest :)

Whatever language you're using, there is almost always a linter available for codestyle. I always recommend using one. This one I linked to (ESLint) is specifically for JavaScript. Set a styleguide for your team, then the linter will break the build when new code doesn't fit the style guide. Devs get feedback quickly and no one has to worry about telling each other to use "tabs or spaces" ... or a certain style of {}..etc... Little nitpicky things devs shouldn't be thinking about in each others code. Let the robots do it.

looks great!

65% of people are foremost visual learners, why not change the code review to start with a visual overview, and then continue to the code? Check this example: https://youtu.be/DAPNpvbFe-w ...coming soon to GitHub marketplace and to ProductHunt ( https://www.producthunt.com/upco... )

- support for all programming langugaes - tons of plugins, for various types of lintings - security scans, inline github PR comments - tons of other features.

If you use JavaScript seriously, take a look at DeepScan. It provides specialized static analysis for JavaScript code and integration with GitHub (automatically checking the code pushed or pull requested to the repository). To be honest, I'm the maker of it :)