CheckOut Manager for Office 365 by Virto

Virto CheckOut Manager Add-In helps eliminate the collaboration issues associated with SharePoint checked out documents.

CheckOut Manager for SharePoint Online ensures access to all checked out files in your SharePoint libraries in a single view. Also, your team can use email reminders and auto check-in feature to provide coworkers access to files just in time!

Features:

-view all checked out SharePoint documents in a single view

- set notification period to check-in your files and receive an email reminder to check-in your document in time.

- assign auto check-in period for each library.