ONLYOFFICE
Online Document Editor
Online Spreadsheet Editor
Online Presentation Editor
Collaborative editing and commenting
File sharing
Document versions
Document embedding
Integration with Google Drive, Box, Dropbox, OneDrive
Document management
Customizable CRM
Web-to-lead form
Invoicing
Gantt Chart
Milestones
Task dependencies and subtasks
Time tracking
Automated reports
Access rights
Blogs, forums, polls
Calendar
Email Aggregator
People module (employee database)
Instant Messanger
https://launchpad.net/teamlab
Kimai is a free open source timetracker. It tracks work time and prints out a summary of your activities on demand. Yearly, monthly, daily, by customer, by project, by action …
http://www.kimai.org
It is the core base of a complete business solution providing modularity, scalability and security.
http://www.tryton.org
