Nextcloud is an out-of-the-box OpenSource solution for file and email collaboration for a small organization or workgroup.
The core capabilities of our Nextcloud are:
Uploading and sharing files on cloud storage to a workgroup or publicly;
Create and collaboratively edit document files (similar to MS Word), spreadsheets (similar to MS Excel), presentations (similar to MS PowerPoint) and diagrams;
Create, edit and share photo galleries (similar to Google Photo);
Ability to synchronize files quickly and securely using Nextcloud Desktop Sync Client software (Windows, Linux, iOS, Android app.);
Work with mailbox from local mail server/domain or any other mail service, such as Gmail, ZohoMail, Hotmail, Ukrnet, etc. without leaving the Nextcloud environment.