Skip to content
aicoolies logo
Eclipse logo

Eclipse

Open-source IDE for Java and enterprise development

Long-standing open-source IDE primarily for Java development, backed by the Eclipse Foundation. Features powerful Java tooling with refactoring, debugging, JUnit integration, and Maven/Gradle support. Extensible via a massive plugin marketplace covering C/C++, Python, PHP, and web development. Includes built-in Git support, terminal, and XML/JSON editors. Used extensively in enterprise Java, Android (legacy), and embedded systems development. Free and cross-platform.

About Eclipse

Eclipse IDE is an open-source integrated development environment primarily known for Java development, maintained by the Eclipse Foundation and backed by a large community of contributors. It has been a cornerstone of enterprise Java development for over two decades, solving the problem of building, debugging, and managing complex Java applications through a comprehensive set of built-in tools. Eclipse also supports C/C++, PHP, Python, and other languages through its extensible plugin architecture.

Eclipse provides deep Java development features including intelligent code completion, advanced refactoring tools, integrated Maven and Gradle build support, a powerful debugger with step-through capabilities, and JUnit test integration. Recent releases include support for the latest Java versions (Java 25 and 26), quick fixes to convert classes to Java records, improved sticky scrolling based on code structure, and enhanced Javadoc formatting with markdown syntax support. The Eclipse Marketplace offers thousands of plugins for extending functionality, and the platform includes built-in Git support, XML editing, and database tools in the Enterprise Java package.

Eclipse is widely used by enterprise Java developers, teams working on large-scale Jakarta EE and Spring applications, and organizations that require a free, extensible IDE with strong community support. It is particularly popular in corporate environments where budget constraints favor open-source tooling, and in academic settings where it serves as a standard teaching IDE. Eclipse runs on Windows, macOS, and Linux, and releases follow a predictable quarterly cadence (March, June, September, December) that aligns with Java release cycles.

Pricing & Platform Specs

Pricing Summary

100% free and open source ($0) under the Eclipse Public License 2.0 (EPL-2.0). Enterprise-grade modular IDE built on the OSGi Equinox framework, governed by the non-profit Eclipse Foundation with zero licensing fees or seat restrictions for personal and commercial development.

full pricing breakdown →

Supported Platforms

macOS, Windows, Linux

Explore categories, tags & use cases

Professional IDEs with Junie AI coding agent

JetBrains is a software development company that produces a family of language-specific IDEs built on the IntelliJ platform — IntelliJ IDEA (Java/Kotlin), PyCharm (Python), WebStorm (JS/TS), PhpStorm, RubyMine, GoLand, Rider (.NET), and CLion (C/C++). Each IDE provides deep, language-aware tooling: smart refactoring, static analysis, test runners, debuggers, and first-class AI Assistant and Junie coding agent integration.

freemium

Free local AI code completion for VSCode

Twinny is a free, open-source AI code completion extension for VS Code that works with any OpenAI API-compatible endpoint including local models via Ollama. It provides real-time inline suggestions, a sidebar chat for code discussion, workspace embeddings for context-aware completions, and a decentralized P2P inference network. A privacy-first alternative to GitHub Copilot with zero licensing cost.

Open Source

Community experience

Sources & verification

Sources checked
Content verified

Verification dates are editorial checks. Routine CMS saves and automatic updatedAt timestamps do not advance them.

FAQ

What is Eclipse?

Long-standing open-source IDE primarily for Java development, backed by the Eclipse Foundation. Features powerful Java tooling with refactoring, debugging, JUnit integration, and Maven/Gradle support. Extensible via a massive plugin marketplace covering C/C++, Python, PHP, and web development. Includes built-in Git support, terminal, and XML/JSON editors. Used extensively in enterprise Java, Android (legacy), and embedded systems development. Free and cross-platform.

Is Eclipse free?

Yes — Eclipse is open source and free to use. 100% free and open source ($0) under the Eclipse Public License 2.0 (EPL-2.0). Enterprise-grade modular IDE built on the OSGi Equinox framework, governed by the non-profit Eclipse Foundation with zero licensing fees or seat restrictions for personal and commercial development.

Is Eclipse open source?

Yes — Eclipse is open source.

Is Eclipse still maintained?

Yes — Eclipse is active. Its listing was last verified on September 6, 2026.

What are the best Eclipse alternatives?

The first editor-selected Eclipse alternatives are JetBrains, Twinny.