Incredible .NET IDE with the power of ReSharper! Rider is used across our entire dev team using Windows and macOS. Derek Comartin Director of Engineering, Full Circle TMS What is Rider? JetBrains Rider is a cross-platform .NET IDE based on the IntelliJ platform and ReSharper. Supports many .NET project types Rider supports .NET Framework, the new cross-platform .NET Core, and Mono-based projects.