Upsource let's you set up triggers to automatically create code reviews and assign reviewers based on a number of criteria. Upsource provides syntax highlighting for dozens of languages and having IntelliJ IDEA core in it, Upsource boasts in-depth knowledge of these languages and provides server-side static code analysis, code-aware navigation, and search for usages. Upsource provides team collaboration that participate in discussions, @mention other users, and share everything with a URL, including code, revisions, diffs, code reviews, search filters, files, and even code selections and Upsource offers a distributed cluster setup that can accommodate hundreds of projects, serve thousands of users, and ensure 24/7 availability and fault tolerance.
