https://docs.mattermost.com/deployment-guide/desktop/linux-desktop-install.html
Install desktop app on Linux - Mattermost documentation
install desktop applinuxmattermostdocumentation
https://help.dropbox.com/installs/download-dropbox
Download and install the Dropbox desktop app - Dropbox Help
The Dropbox desktop app is available for Windows, macOS, and Linux operating systems. Learn how to get Dropbox and install the app with ease.
download and installthe dropboxdesktop apphelp
https://help.dropbox.com/installs/dropbox-desktop-app-for-linux
How to install the Dropbox desktop app on Linux - Dropbox Help
Learn how to install the Dropbox app on Linux, check the system requirements, and get the full Dropbox experience on your Linux computer.
how to installthe dropboxdesktop app
https://help.dropbox.com/installs/download-dropbox?fallback=true
Download and install the Dropbox desktop app - Dropbox Help
The Dropbox desktop app is available for Windows, macOS, and Linux operating systems. Learn how to get Dropbox and install the app with ease.
download and installthe dropboxdesktop apphelp