Free Collaborative Web Software

WebCalendar is a free PHP based online calendar Tool that allow you to maintain a calendar for a single user or an intranet group of users. It can also be configured as an event calendar viewable by visitors. It use multiple database such as MySQL, Oracle, PostgreSQL, MS SQL Server, ODBC, or Interbase and offer Unique Features such as email reminders, iCal/vCal import/export, remote subscriptions for Sunbird or Apple iCal, LDAP and NIS support, and translations for 29 languages.

Features of WebCalendar

XHTML/CSS compliance
Multi-user support
Multilanguage Support
Auto-detect user’s language preference from browser settings
View calendars by day, week, month or year
View another user’s calendar
View one or more users’ calendar via layers on top of your own calendar
Add/Edit/Delete users and Events
Repeating events including support for overriding or deleting (exceptions)
Configurable custom event fields
User-configurable preferences for colors, 12/24 time format, Sun/Mon week start
Checks for scheduling conflicts
Email reminders for upcoming events and Email notifications for new/updated/deleted events
Export /import events to/from iCalendar, vCalendar or Palm
Users can make their calendar available publicly to anyone with an iCalendar-compliant calendar program (such as Apple’s iCal, Mozilla Calendar or Sunbird)
Publishing of free/busy schedules (part of the iCalendar standard)
RSS support that puts a user’s calendar into RSS (WebCalendar 1.1+)
Subscribe to “remote” calendars (hosted elsewhere on the net) in either iCalendar or hCalendar formats (WebCalendar 1.1+)
User authentication: Web-based, HTTP, LDAP or NIS
Online help

Download : WebCalendar-1.2.1.zip [1.68Mb]
Demo : WebCalendar 1.2 Demo

ProjectPier is a open source self-hosted PHP based application for online collaboration. it help you to manage your tasks, projects and teams through an intuitive web interface. ProjectPier is a cross-platform application that is written in PHP5, JavaScript and a uses database backend like MySQL. It gives you a flexible system for managing projects involving multiple organizations by providing a central place for all project activity and information while integrating with users’ existing tools and workflow – all completely FREE. ProjectPier will help your organization communicate, collaborate and get things done Its function is similar to commercial groupware/project management products, but allows the freedom and scalability of self-hosting.

Features of ProjectPier

ProjectPier is purely web based. The members of your project team can collaborate from anywhere as long as they have Internet access and a web browser.
It sends e-mail notifications for all important events. So even if project members should forget to check the website they will stay in the loop.
ProjectPier is an easy-to-use, well designed, web based project management tool with the look and feel of Web 2.0.
It organizes your projects into Milestones, Messages, Task lists, Tasks and Files.
Unlimited projects and users : ProjectPier will grow with you, There are no limits for the number of projects, clients, users or tasks you can manage.
Based on PHP and MySQL.
ProjectPier is project management with a human touch and simply the best tool for easy online collaboration.
ProjectPier is open source software release under the Honest Public License (and will always be). You don’t have to pay any licence fee, you can use it for any project you like (even commercial ones), and you can modify the code yourself if you like.

Download : http://www.projectpier.org/project/ProjectPier/

Collaber is a multi platform online project management and collaboration tool for your teams to share files, folders, events, tasks. Connect and Communicate with your people online or offline in a safe and secure environment. It give you virtual Office Environment, where User and there team meet together and communicate with each other easily, share files, discuss ideas, hold meetings, plan schedules, and manage projects and get the work done as if they are all located in the same location, no matter where the members are physically located. It keeps your data safe and secure environment.

Features of Collaber

Access your workspace and data from any device
Unified login, and account management
Easy customization of GUI with movable views and editors
Context sensitive menus, help
Use Database to save unlimited data in the workspace.
New Wizards for all the tasks involved
File Sharing and Synchronization make easy
See who’s working on what, when.
Multilanguage supported
Discuss issues with your team with discussion and Chat Tools
Task Management with Time Line and Reports
Calendar Tool for organizing events
Easy Messaging with attachments and history

Visit: Collaber

Teambox is a open-source web based Project Management and collaboration tool which allow you create unlimited projects for free. Collaboration mainly focused on projects, rather than documents. Each project have there own in-built calendar, tasks, pages and project chat rooms, all within a really clean and intuitive user interface. Teambox is completely open source application, it means you can install it on your server to completely customize the entire interface as per your work requirement.

Features :

Open source project tracking, management & collaboration tool.
Clean and intuitive user interface.
allow you to create unlimited projects for free
Easy to create Pages to share info with your team: Links, documents, maps…
in-built calendar, tasks, pages and project chat rooms for each project
Easy to Install it in your own server and highly customizable.

Website : http://www.teambox.com/

ArgentumInvoice is an Open Source web based invoice creation and project management tool for managing projects easily and billing the time worked accordingly. It written in PHP and using the Kohana framework for operation. you can easily manage all your client information including billing, shipping and contact information with ArgentumInvoice.

it provide detailed time tracking for your clients’ projects and your organization’s users.. Also, create timesheets reports for every user.

At any point of the projects, ArgentumInvoice can create PDF invoices and email them to your clients. Even it also track the invoice due dates and payment statuses. With Built-in Multiple currency support, user can automatically convert all there invoices for multi-national clients.

Features of ArgentumInvoice