Argentum is an open source project management and invoicing software that you can use in order to keep track of the different projects any team of yours has to tackle, and also of the invoices that you are sending out to your clients.

Its very easy to monitor how much time is being spent by a team on an assignment. It has built-in support for PDF generation, multiple currency and automatic currency conversions for invoices.

Argentum project management and invoicing software is available in two configurations: you can host it in your server, or you can have it hosted by the company.

TeamLab is an open-source software for business collaboration and project management. It allows you to use social networking tools such as blogs and forums, organize business tasks and milestones, as well as communicate with your team members via corporate IM.

Features

• Create and manage existing projects
• Tasks & Milestones management
• Chat with your colleagues in real-time

TeamLab is written in ASP.NET / MySQL and can be used as a hosted service or its open source alternative allows you to deploy it on your own servers.

Teambox is twitter like project management and team collaboration software. Teambox is a web-based, quality collaboration software with a simple and clean user interface.

Teambox’s overview screen is a Twitter-like feed of activity and updates. You can post updates on a project. Stay in touch with your team all the time, across all your projects, easily.

This project management software supports:

• Multiple projects
• Status updates
• Document attachments

This open source software is written in Ruby on Rails and you can use a hosted version or can download a copy to host your very own.

TaskFreak is an Open Source Web Based Task & Project Manager Tool. TaskFreak is simple in its interface and very effecient in its performance.

Create tasks with ease and order tasks by priority and deadline, organize by project and context. Easily accessible drop down menu to create tasks and manage projects.

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OpenProj is an Open Source Free Project Managemetn Software by Serena Software. This Free Project Management Software is a desktop replacement of Microsoft Project. OpenProj has equivalent functionality, a familiar user interface and even opens existing MSProject files.

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OneOrZero provides an Open Souce Help Desk Software & Knowledge Base Software backed by a highly configurable and extensible Action & Information Management System which allows you to ‘build your own system’ on the fly.

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Virtual Project is an Open Source Project Management Software. This project management software is innovate, web based to manage project easily and efficiently. It is easy to use and requires little training on behalf of the end user. It’s a new way of taking your project anywhere. You can have unlimited staff, organizations and projects.

Website: http://sourceforge.net/projects/virtualproject/

Download Open Source Project Management Software

Collabtive is an Open Source Web Based Project Management Software. This open-source software provides an alternative to proprietary tools like Basecamp. Collabtive is intended for small to medium-sized businesses and freelancers.

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Slife is a time and activity analytics application for both Mac and Windows that automatically keeps track of where you spend your time on your computer.

Slife observes as you interact with applications, documents, email and web sites and then displays detailed statistics of your computer usage in a set of intuitive and easy to use visualizations.With Slife, you can finally understand where you are spending your time and energy, and focus on what really matters.

Features

• Slife tracks your usage of applications, documents and web pages automatically.
• Slife provides 6 visual interfaces that let you analyze and visualize your computer time and activities like never before.
• Sometimes it might be useful to associate the utilization of applications, documents and pages with tasks.
• Slife lets you specify time goals for your activities.

Website: http://www.slifelabs.com/