What is IntelliJ IDEA used for?

IntelliJ IDEA is JetBrains' IDE for Java and Kotlin, offering deep code analysis, refactoring, Spring support and AI agent integration. It is a good fit for developing Spring Boot backends, refactoring large Java codebases and Kotlin development on the JVM.

Is IntelliJ IDEA free?

Yes. IntelliJ IDEA has a free plan. Free download with 30 days of Ultimate included; subscription pricing is on the vendor's buy page.

Is IntelliJ IDEA open source?

No. IntelliJ IDEA is proprietary (closed-source) software. Open-source alternatives to IntelliJ IDEA include Visual Studio Code, code-server and VSCodium.

What are some alternatives to IntelliJ IDEA?

IntelliJ IDEA competes with Visual Studio, Cursor and Sublime Text. For open-source options, see Enlisted's ranked list of open-source IntelliJ IDEA alternatives.

IntelliJ IDEA: features, pricing and alternatives

About IntelliJ IDEA

IntelliJ IDEA is an integrated development environment from JetBrains for Java and Kotlin. It analyzes a whole project to provide navigation, code completion, inspections and safe refactoring, and it is widely used for backend development on the JVM.

JetBrains highlights its understanding of Spring applications, helping developers find and fix errors in a few steps, and describes the current release as a place where AI agents and professional Java and Kotlin work come together. The download is free and includes 30 days of the Ultimate edition, with paid subscriptions available from the vendor's buy page.

IntelliJ IDEA is a proprietary desktop application, not a hosted or self-hosted service. It suits professional Java and Kotlin developers and teams, particularly those building Spring-based services who want strong static analysis and refactoring tools built into the editor.

Key features

Deep code analysis for Java and Kotlin
Safe refactoring across large projects
Spring application awareness and error detection
AI agents integrated into the IDE
Ultimate edition with extra framework tooling
Plugin ecosystem for extensions

Good fit for

→Developing Spring Boot backends
→Refactoring large Java codebases
→Kotlin development on the JVM

Tags: ide; java; kotlin; jetbrains; spring; refactoring; developer-tools

IntelliJ IDEA: questions and answers

What is IntelliJ IDEA used for?: IntelliJ IDEA is JetBrains' IDE for Java and Kotlin, offering deep code analysis, refactoring, Spring support and AI agent integration. It is a good fit for developing Spring Boot backends, refactoring large Java codebases and Kotlin development on the JVM.
Is IntelliJ IDEA free?: Yes. IntelliJ IDEA has a free plan. Free download with 30 days of Ultimate included; subscription pricing is on the vendor's buy page.
Is IntelliJ IDEA open source?: No. IntelliJ IDEA is proprietary (closed-source) software. Open-source alternatives to IntelliJ IDEA include Visual Studio Code, code-server and VSCodium.
What are some alternatives to IntelliJ IDEA?: IntelliJ IDEA competes with Visual Studio, Cursor and Sublime Text. For open-source options, see Enlisted's ranked list of open-source IntelliJ IDEA alternatives.