Open, reopen, and close projects
In CLion, you can open several projects simultaneously in different windows. By default, each time you open a project while another one is opened, CLion prompts you to choose whether to open the project in the same window or in a new window. If necessary, you can change this behavior using controls on the System Settings page.
Go to and choose one of the following options in the Project Opening section:
Open project in a new window to open a new CLion window each time a new project is opened.
Open project in the same window to stay in the same CLion window.
Confirm window to open project in to keep the default behavior and display a dialog to choose how to open each new project.
Opening projects
Open a project
Click Open on the Welcome screen or select from the main menu.
In the Select Path dialog, select the directory that contains the project to open.
In the case of a CMake project, the directory should contain CMakeLists.txt.
For a compilation database project, it should contain compile_commands.json.
For a gradle project, you need to point CLion to the build.gradle file and then choose Open as Project.
Specify whether you want to open the project in a new window, or close the current project and reuse the existing window.
For CMake projects, CLion comes with a CMake Profile Wizard to help you configure Toolchains and CMake Profiles for the first time: 
Open a project from the command line
In the command prompt, type:
clion <path_to_the_project folder>See Open files from the command line for more information.
Reopening recent projects
CLion keeps the history of your recent projects. When CLion starts, the last project (or projects if there were several projects opened at once in your previous session) reopens by default. You can change this behavior in the Startup/Shutdown section of the dialog.
Reopen a recent project
Call from the main menu and select the desired project from the list.
Invoke the Run Anything dialog by pressing Ctrl twice (or search for Run anything in Ctrl+Shift+A). In the Run Anything dialog, type Open to see the list of recent projects:
On the Welcome screen, click Projects in the left-hand pane and then select the project of interest in the right-hand pane where the list of your recent projects is shown. Start typing in the Search projects field to filter the list of recent projects.
Remove a project from the list of recent projects
From the main menu, select and click Manage Projects at the very bottom of the recent projects list. From the list of recent projects, select the project to remove and then click the closing icon for the project to remove.
The selected project will be removed from the list of the recent project in the Project window and on the Welcome screen.
To remove a project only from the list on the Welcome Screen, right-click the target project and select Remove Selected from Welcome Screen.
Merge project windows (macOS)
On macOS, you can merge all opened project windows into one, turning them into tabs.
Make sure that there are several CLion projects opened in separate windows.
From the main menu, select .
Drag a project's tab to work with the project in a separate window again.
Navigate projects on the Welcome screen
If you work with multiple projects, it's likely that you have a long list of recent projects on the Welcome screen. CLion provides several options that can help navigate this list in a more convenient way.
You can use the search bar to search for projects, join several recent projects in a group, or set a custom icon for each project.
Group projects
Groups make navigation simpler and help you logically organize your recent projects.
On the Welcome screen, right-click any project and select New Project Group.
In the Create New Project Group dialog, name the new group and click OK.
Right-click the project that you want to move to the new group, select Move to Group, and click the target group's name.
After that, hover the mouse pointer over the group and use the 
icon to show the menu from which you can open all projects in the group at once by clicking All Projects in Group. You can also ungroup the projects, move them to another group, and remove them from the list of recent projects at once.
Change the project icon
For each project, you can configure a custom icon so that you can quickly find the necessary project on the Welcome screen. Your custom icon should have the SVG format.
On the Welcome screen, right-click the project for which you want to change an image and select Change Project Icon.
In the dialog that opens, click Choose SVG file and specify the path to the necessary SVG icon.
Click OK to apply the changes.
To remove the custom icon, click
in the Change Project Icon dialog.
Switch between projects
If you have several opened projects at the same time, you can switch between them using the following options:
Switch to the next project window: Ctrl+Alt+] ()
Switch to the previous project window: Ctrl+Alt+[ ()
Alternatively, open the menu and select the project to which you want to switch.
Changing project location
Move a project to another location
In the Project tool window Alt+1, right-click the root directory of your project and select (F6).
In the dialog that opens, specify a new location for the project and click Refactor.
Change the default location for projects
In the Settings dialog (Ctrl+Alt+S), select .
In the Default project directory field, specify the path to the folder in which you want to store your projects.
Apply the changes and close the dialog.
Closing projects
If you need to close only one project, you can either close the project window or select from the main menu.
If you work with multiple projects, use the following actions to close many projects at once:
Close all projects
From the main menu, select .
This action closes all projects that are currently opened in CLion.
Close all but the current project
From the main menu, select .
This action closes all opened projects except the current one.