CoScreen is a collaborative meeting tool that allows multiple participants to simultaneously share and interact with any application window on their desktops. It was specifically designed for engineers for use cases such as pair programming, incident management, joint troubleshooting, team standups, and employee onboarding.



CoScreen is a desktop app available for Windows 10 and macOS v10.15 Catalina and higher.

Download CoScreen.

After installing CoScreen, launch the desktop app and sign up.

Join your first CoScreen

Click on New CoScreen to create a new CoScreen. If you were invited to a CoScreen, click on the link, or click on Join a CoScreen and paste the CoScreen ID or URL.

When you join a CoScreen, it is added to your list of Recent CoScreens in the main menu. You can rejoin these at any time.

Invite your collaborators

Invite collaborators by sharing the link.

You can also add your closest collaborators to the list of Your Collaborators in the main menu. After a collaborator accepts your request, you can see if they are online and available and call them with a click.

Share windows

You can share application windows in multiple ways.

  • Select individual windows to be shared.

Share and unshare windows by clicking on the tab above each window. You can also use the window sharing dialog to select the application window(s) that you want to share with other members of the CoScreen you’ve joined.

Multiple users can share multiple windows at the same time. Shared windows have a border around them in a different color assigned to each CoScreen participant.

  • Share all windows on your display.

Open the window sharing dialog and select the first option, Entire display, to share all open windows on this display. While screen sharing is enabled, all windows that you open or drag onto that display are also shared.

Click on the Share windows button to open the window sharing dialog.

A panel of buttons from the CoScreen desktop UI. The 'Share windows' button is highlighted.

By default, when you join a CoScreen, the following dialog appears:

The window sharing dialog. Users are prompted to choose a display, and then to select a window or windows to share.

If you have multiple displays, choose which display contains the window or windows you want to share.

Screen sharing is deactivated by default when you join a CoScreen.

Collaborate in shared windows

You can see the mouse pointers of remote participants whenever they move their pointers over a shared window. Everyone can click and type into any shared window. If you click the Draw button on the tab of a remote window, you can also draw on a shared window.


You can integrate CoScreen with Slack, Google Calendar, VS Code, and other apps. See all CoScreen integrations.

CoScreen + Slack

To install the CoScreen Slack app, go to and click on Add to Slack. To enable CoScreen in private channels, type @coscreen and hit enter/return, then click on Invite to Channel. To enable CoScreen in multi-user DMs, go to View Member List -> Add People -> CoScreen.

CoScreen + Google Calendar

To configure this integration, install the CoScreen Chrome extension and sign in. Open any Google Calendar event and use the Add CoScreen button to make the event a CoScreen meeting.

Security and privacy

  • Network security

CoScreen uses a P2P (peer-to-peer) connection whenever you and another participant can connect directly (for example, when there are no corporate firewalls or proxies between you). None of your audio, video, window, or control input feeds touch CoScreen’s servers. Connections are end-to-end encrypted using DTLS-SRTP. If there are three or more users in a session, the connection is over a video bridge.

  • Video infrastructure

Participants collaborate using an enterprise-grade, HIPAA-compatible video infrastructure with hundreds of servers that run the Jitsi framework. All video data is encrypted using DTLS-SRTP during transmission.

  • Data storage

CoScreen does not record or store any shared information (for example, shared windows, audio, video or remote control input).

CoScreen captures general usage data, like used app features and session statistics, to learn about bugs and usage patterns. CoScreen never records or accesses shared windows or control input apart from enabling you to exchange window content and controls with your peers. See CoScreen’s Privacy Policy for more details.

For all the details on how CoScreen enables secure collaboration, read the CoScreen Security Whitepaper.

Further reading

Additional helpful documentation, links, and articles: