Nextcloud is a privacy-friendly, self-hosted Cloud sync & share platform. You can share and collaboratively edit a file in Nextcloud with all meeting participants. To get started, visit Nextcloud enterprise trial.

If you have an existing Nextcloud server instance:

1. Install the Nextcloud Picker app from the Nextcloud app store with the guide on Github.
2. Create a private Webex Embedded App for Nextcloud with the 2 guides - Creating Embedded App and Managing Private Embedded Apps.

Note: You need a Webex org admin access, a Nextcloud instance & a Nextcloud user account. Meeting participants do not need a Nextcloud account. For info on pricing, visit Nextcloud Plans.