Is there any Project Management or Team Collaboration Online Platform?

Hey I need an online based platform to share with my to do lists with my co-workers more than 50+. I need mostly to have this features available to do list, sharing option and little discussion option. I prefer a 100% free open source platform. I already googled it quite a lot. But am vein. It would be great if you share your experience to do this type of problem solution.Thanks

Asana.com
Freedcamp.com

.:mAestro:. said:

Asana.com
Freedcamp.com

Click to expand...

Are they totally free....? Any way Thank you, thank you so much for your help.

Yeah, Asana is a great option. However, I'm not sure if they have a free version but you can always contact their customer support team for further assistance. Other alternatives for project management is list this of over 40 software http://blog.timedoctor.com/2011/02/02/43-project-management-software-alternatives Check it out.