I think Airspeed was accidentally uninstalled, how can I check in Slack?

There are a few ways to check if Airspeed apps are currently installed. First, use the left sidebar of Slack and click on Apps > Manage > Browse Apps. You can search for the apps here, such as Celebrations, to check if they are installed.

If you are a Slack admin, you can view your app activity log. In the top menu of Slack, navigate to Slack > Settings & Administration > Workspace Settings > Configure apps (left sidebar) > Activity Log.

In the activity log, you can see if anyone accidentally uninstalled an app. You can always reinstall an app if needed.