WebStorm vs IntelliJ IDEA Ultimate
via a plugin 
via a paid plugin 
available
The JavaScript and TypeScript IDE
The IDE for Professional Development in Java and Kotlin
All of the functionality in WebStorm is available in IntelliJ IDEA Ultimate, either out of the box or via free plugins. There's no need to purchase licenses for both IntelliJ IDEA Ultimate and WebStorm unless you like having a dedicated tool for each language. Then WebStorm may be the right choice for focused JavaScript development.
Languages
WebStorm
JavaScript, TypeScript CSS, Sass, SCSS, Less Rust Dart SQL HTML XML, JSON, YAML XSLT, XPath Markdown Haml, Slim, Liquid
IntelliJ IDEA Ultimate
Java Groovy Kotlin Scala JavaScript, TypeScript CSS, Sass, SCSS, Less Python Cython Ruby and JRuby Rust PHP Go Dart SQL HTML XML, JSON, YAML XSLT, XPath Markdown Haml, Slim, Liquid
Framework support
WebStorm
React, React Native Angular Node.js Next.js Vue.js Playwright Cypress
IntelliJ IDEA Ultimate
Spring (Spring MVC, Spring Boot, Spring Integration, Spring Security and more) Spring Cloud Java EE (JSF, JAX-RS, CDI, JPA, etc) Jakarta EE (JSF, JAX-RS, CDI, JPA, etc) Micronaut, Quarkus, Helidon Hibernate, JPA Ktor JavaFX Swing (incl. UI Designer) Android (includes the Android Studio's functionality) GWT Thymeleaf, Freemarker, Velocity Liquid, Go Template, Mustache, Qute AspectJ, OSGI Akka, SSP, Play2 React, React Native Angular Node.js Next.js Vue.js Apache Flex, Adobe AIR Ruby on Rails Django Flask FastAPI PyQT Drupal, WordPress Laravel Symfony Twig, Blade Selenium / Selenide Playwright Cypress
Build tools
WebStorm
npm Webpack Gulp, Grunt Vite
IntelliJ IDEA Ultimate
Maven Gradle Ant sbt, Bloop, Mill npm Webpack Gulp, Grunt Virtualenv Pipenv Poetry Phing Vite
Integrated developer tools
WebStorm
Embedded Terminal Database Tools HTTP Client
IntelliJ IDEA Ultimate
Embedded Terminal Database Tools HTTP Client
Version Control
WebStorm
Git, GitHub, GitLab Subversion Mercurial Perforce
IntelliJ IDEA Ultimate
Git, GitHub, GitLab Subversion Mercurial Perforce Local History
Deployment
WebStorm
Docker, Docker Compose Kubernetes
IntelliJ IDEA Ultimate
Docker, Docker Compose Kubernetes Java applications servers Remote Development Dev Containers
Collaboration and teamwork
WebStorm
Collaborative development Settings synchronization via JetBrains Account Issue tracker integration
IntelliJ IDEA Ultimate
Collaborative development Settings synchronization via JetBrains Account Issue tracker integration
Appearance
WebStorm
Custom themes
IntelliJ IDEA Ultimate
Custom themes
License
WebStorm
Commercial
IntelliJ IDEA Ultimate
Commercial