Bitrix24 is an excellent free online project management solution or customer relationship management (CRM) software with unlimited projects, tasks, and subtasks. It includes time tracking, task automation workflows, Gantt chart, document management, and task collaboration tools (e.g., group chat and video conferencing). Bitrix24 is entirely free for up to 12 users. Besides, a self-hosted option is available to let you deploy Bitrix24 on-premise, and you can migrate from the cloud to your server at any time.

Basic features

  • Up to 12 users for free (unlimited users for $99 per month)
  • 5 GB for free (unlimited storage is available for $199 per month)
  • Unlimited  projects, tasks, and subtasks for free
  • Cloud and On-Premise options are available
  • Mobile tasks management is available for iOS and Android
  • Open source code and API
  • and much more

A few Details of Bitrix24 Features

Social Intranet

Social networks like Facebook provide you with an easy way of communicating with your friends. Bitrix24 provides tools for task management, document sharing, and time tracking integrated into just this type of social interface for maximum efficiency of communications and work. Also, you can use Bitrix24 not only in your office but anywhere you like with the free mobile app!

Bitrix24 Activity Stream

The Activity Stream is an interactive update feed where you can see all changes. As a result, everyone in your team will be aware of what is going on. Also, everybody can contribute to discussions, and can choose what types of updates to display, because each user can personalize the Activity Stream.

Activity Streams provides users with real-time updates, smart following, notification settings, and announcements. You can schedule events, attach files, receive immediate feedback from your colleagues – all done inside your personalized Activity Stream. Aside from being personalized, the Activity Stream is interactive. You can add comments directly from the main interface. In addition, you can access the task and document viewer without additional navigation, and items can be ‘liked.’ Liking content shows the opinions of coworkers and also influences search results, as liked content is displayed with priority in search results. In this way, useful and popular content remains easy to find.

Bitrix24 Conversations

With a conversation, you can quickly start a collaboration on a task or a document. When starting a new conversation in the Activity Stream, you can also attach a document or an image. You can start a private conversation with one or many colleagues, adding additional participants at any time. Private messages can also be sent through the Instant Messenger.

And More

The above features are just a small part of the complete feature set. Click here to read more about available features.

Additional Resources:

Here is a comprehensive review for Bitrix24
Bitrix24 Manual
More Bitrix24 Training Courses

Another option for a project management tool would be Teamdeck. And if you need a tool for your invoicing needs, then FreshBooks would be a good choice.