Bitrix24

Bitrix24 is a leading free cloud, mobile and on-premise (open source code) project management solution used by over 4 million businesses worldwide.

Unlimited tasks, projects, Gantt chart, task dependencies, time tracking, resource planning, quotes, invoicing management – FREE!

English, German, Portuguese, Spanish, Chinese, Russian, and many other languages supported.

Communications Your company.United.
Activity stream, group chat, calendars, workgroups, and other collaboration tools at your disposal.