A power tool
for a power language

Who wouldn’t like to code at the speed of thought while the IDE does all the mundane development tasks for them? But is that really possible for a tricky language like C++, what with its modern standards and heavily templated libraries? Why, yes, yes it is! See it to believe it.

Smart C and C++ editor

Code assistance

Read and write code effectively with an editor that deeply understands C and C++. Have completion results filtered by type in Smart Completion. Use Breadcrumbs to track your location inside the hierarchy of scopes. Gain insight into function calls thanks to parameter name hints. Find the context usages of a symbol or simply jump to it by typing its name. CLion will even make sure your code conforms to coding guidelines, including formatting, naming, and more.

Code assistance screenshot

Code generation

Generate tons of boilerplate code instantly. Override and implement functions with simple shortcuts. Generate constructors and destructors, getters and setters, and equality, relational, and stream output operators. Wrap a block of code with a statement, or generate a declaration from a usage. Create custom live templates to reuse typical code blocks across your code base to save time and maintain a consistent style.

Code generation screenshot

Safe refactoring

Rename symbols; inline a function, variable, or macro; move members through the hierarchy; change function signatures; and extract functions, variables, parameters, or a typedef. Whichever automated refactoring you use, rest assured CLion will safely propagate the appropriate changes throughout your code.

Safe refactoring screenshot

Quick Documentation

Inspect the code under the caret to learn just about anything: function signature details, review comments, preview Doxygen-style documentation, check out the inferred type for symbols lacking explicit types, and even see properly formatted final macro replacements.

Quick Documentation screenshot
Watch CLion Tips & Tricks

Code analysis on the fly

Code Analysis screenshot

Create code that's beautiful and correct. With CLion, potential code issues are detected instantly, as you type...

Code Analysis screenshot

...and can be fixed at the touch of a button, while the IDE correctly handles the changes.

Code Analysis screenshot

CLion runs its code analysis, Data Flow Analysis, other Clangd-based checks, and Clang-Tidy to detect unused and unreachable code, dangling pointers, missing type casts, no matching function overload, and many other issues.


Integrated debugger

Debugger screenshot

Investigate and solve problems with ease in CLion's friendly debugger, with GDB or LLDB available as the backend.

Attach to local processes or debug remotely. For embedded development, rely on OpenOCD and Embedded GDB Server configurations to do on-chip debugging with CLion.

Dive deeper with disassembly and memory views, and peripheral view for embedded devices.

Set breakpoints

Use line, symbol, exception, and conditional breakpoints to inspect your code’s execution. Log the events, remove breakpoints once hit, or disable them until another one is hit. All of this can be configured in a dedicated dialog.

Evaluate expressions

Make use of the Watches and the Variables views, or evaluate the result of a function call or some complicated expression when stopping at some execution point.

View values inline

Get a full view of your project with variables’ values shown right in the editor as you debug – with no need to switch to the Variables tab in the Debug tool window!

Watch Demo

Fully Integrated C/C++ Development Environment

Project models

CLion uses the project model to inform its coding assistance, refactoring, coding style consistency, and other smart actions in the editor. Supported formats include CMake, Makefile, Gradle, and compilation database.

Keyboard-centric approach

To help you focus on code and raise your productivity, CLion has handy keyboard shortcuts for nearly all its features, actions, and commands.

Vim fans are welcome to install the Vim-emulation plugin.

Local and remote work

With an embedded terminal, run any command without leaving the IDE, locally or remotely using the SSH protocol.

After editing your code locally, build, run, or debug your application or unit tests locally, remotely, or on a chip.

Everything you need in one place

CLion includes all the essentials of everyday development: VCS (SVN, Git, GitHub, Mercurial, Perforce), Google Test, Catch and Boost.Test frameworks for unit testing, Doxygen, Database tools, and Markdown support.

Discover all features

What’s New in CLion 2020.3

Better Debugging

Better Debugging

With CLion 2020.3, launch applications for debug with root privileges, inspect crashes by debugging the process core dump, and use a new action to move the execution point while debugging to an arbitrary line of code in the editor.

Wider Testing Capabilities

Wider Testing Capabilities

With a variety of improvements in the test runner for Google Test and the brand-new CTest support, CLion makes your unit testing more powerful.

Knowledgeable about Qt

Knowledgeable about Qt

Start a Qt project with ease with the new templates for Qt project and Qt file. Coding with Qt also benefits from code completion for signals and slots and Qt-style auto-import.

See What's New

What our customers say

Matthew Davey

dotBunny
"Both of these tools (CLion and Rider) help our team on a daily basis, allowing developers to perform their tasks quickly and efficiently, all the while seamlessly integrating with numerous parts of our pipeline."

Prof. Dr. Rodriguez-Losada

Conan, JFrog
"CLion is fantastic, finally the C++ high quality cross-platform IDE with CMake as first class build system we were waiting for."

Erkki Salonen

Software Developer
"CLion’s powerful refactoring and code model that understands dependencies between items have already changed my software design process. One can dig out quite a bunch of bugs even before running the application."

Jonathan Dursi

Computational Scientist
"Really liking @clion_ide for a new C++ project: lightweight, responsive, useful, good integrations. And most important, great vi emulation."

Companies worldwide trust JetBrains IDEs. Join the club!