Knowledge Base > IntelliJ Plugin
Diffblue Cover is an automated unit test-writing tool. It analyses your existing Java application and writes unit tests that reflect the current behavior, increasing test coverage and helping you find regressions in future code changes. Diffblue Cover automatically maintains the tests by updating them when your code changes. It supports standard Java 8, 11 & 17, Spring and Spring Boot.
Diffblue Cover is available as both a plugin for IntelliJ IDEA for interactive test writing and a CLI tool (for Windows, macOS and Linux).
You can either buy a licence for either the Diffblue Cover Teams Edition IntelliJ plugin or Diffblue Cover Enterprise Edition IntelliJ plugin, or you can use the Diffblue Cover Community Edition IntelliJ plugin for free.
Diffblue Cover plugin for Intellij can be downloaded from our website or from the Jetbrains Marketplace.