ONLYOFFICE

ONLYOFFICE is a program that includes online editors for working with text documents, presentations and spreadsheets.

Features:
- Online Document Editor
- Online Spreadsheet Editor
- Online Presentation Editor
- Collaborative editing and annotation
- File Sharing
- Document versioning
- Inserting documents
- Integration with Google Drive, Box, Dropbox, OneDrive
- Document Management
- Customizable CRM
- Billing
- Gantt chart
- Milestones
- Task and subtask dependencies
- Time tracking
- Automated reports
- Access rights
- Blogs, forums, polls
- Calendar
- Email aggregator
- Instant Messenger
- Support for 20 languages