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[2533 users on Ohloh]
OpenOffice.org is a multiplatform and multilingual office suite and an open-source project. Compatible with all other major office suites, the product is free to download, use, and distribute.
[80 users on Ohloh]
NeoOffice is a fully-featured set of office applications (including word processing, spreadsheet, presentation, and drawing programs) for Mac OS X. Based on the OpenOffice.org office suite, NeoOffice has integrated dozens of native Mac features and can import, edit, and exchange files with other popular office programs such as Microsoft Office.
[78 users on Ohloh]
KOffice is a free, integrated office suite for KDE, the K Desktop Environment. KOffice applications uses OpenDocument as their native file format when possible. The suite is released separately from KDE.

The KOffice suite includes the following applications:
- KWord - A frame-based word processor
- KSpread - A powerful spreadsheet application
- KPresenter - A full-featured presentation program
- Kexi - An environment for creating data...

The LaTeX Beamer Class
[75 users on Ohloh]
The beamer class is a LaTeX class for creating presentations using a video projector. It offers incremental display, prearranged themes, automatic table of contents, navigation bars, bibliographies, and other features. Can be used with pdflatex and LyX.
Request Tracker
[66 users on Ohloh]
RT is an enterprise-grade ticketing system which enables a group of people to intelligently and efficiently manage tasks, issues, and requests submitted by a community of users.

The RT platform has been under development since 1996, and is used by systems administrators, customer support staffs, IT managers, developers and marketing departments at thousands of sites around the world.

Written in object-oriented Perl, RT is a high-level, portable, platform independent system that eases...

[65 users on Ohloh]
GnuCash is personal and small-business financial-accounting software, freely licensed under the GNU GPL and available for GNU/Linux, *BSD, Solaris and Mac OSX.

Designed to be easy to use, yet powerful and flexible, GnuCash allows you to track bank accounts, stocks, income and expenses. As quick and intuitive to use as a checkbook register, it is based on professional accounting principles to ensure balanced books and accurate reports.

[45 users on Ohloh]
GanttProject is a free project scheduling tool with Gantt chart, resource load chart, interoperability with Microsoft Project, export to PDF and HTML. It runs on Windows, Linux and MacOSX.
Alfresco Content Management
[42 users on Ohloh]
Alfresco offers true Open Source Enterprise Content Management (ECM) - Document Management, Collaboration, Records Management, Knowledge Management, Web Content Management and Imaging.
Google Calendar
[34 users on Ohloh]
A simple Google Calendar Data API Library.
[34 users on Ohloh]
SugarCRM enables sales, marketing, and support organizations to manage their customer interactions more efficiently and profitably and is intended for both large and small companies worldwide. Platform agnostic, SugarCRM is the least complex, most portable, and most cost-efficient customer relationship management (CRM) solution. Natively built on the LAMP (Linux, Apache, MySQL and PHP) stack, Sugar Open Source can be deployed in virtually any environment.
JBoss Portal
[25 users on Ohloh]
JBoss Portal provides an open source platform for hosting and serving a portal's Web interface, publishing and managing its content, and customizing its experience.
[24 users on Ohloh]
KMyMoney is the Personal Finance Manager for KDE.
It operates similar to MS-Money and Quicken, supports different account types, categorisation of expenses, QIF import/export, multiple currencies and initial online banking support.
[24 users on Ohloh]
LimeSurvey (previously known as PHPSurveyor) is a PHP web application that interacts with MySQL/MSSQL/Postgres to develop, publish and collect responses to surveys. There are several ways to insert data into the survey: either by a 'pretty' public screen which presents the question(s), or using a data entry screen. It includes the capacity to generate individual 'tokens' and branching and has numerous question types and basic statistics.
[20 users on Ohloh]
ADempiere Business Suite ERP/CRM/MFG/SCM/POS done the Bazaar way in an open and unabated fashion. Focus is on the Community that includes Subject Matter Specialists, Implementors and End-Users. We are a community fork of Compiere.
[17 users on Ohloh]
ERP5 is a full featured high end Open Source / Libre Software solution published under GPL license and used for mission critial ERP / CRM / MRP / SCM / PDM applications by industrial organisations and government agencies.

It is distributed to linux community via packages for numerous distributions (Mandriva, Debian, Ubuntu,...) and a dedicated Live CD.

[15 users on Ohloh]
Web-based project management & project portfolio management system for service and consulting companies with 2-200 employees. ]po[ covers areas such as CRM, sales, project planning & controlling, collaboration, timesheet, invoicing and payments.
[15 users on Ohloh]
Openbravo is a fully functional integrated web-based open source ERP that is much more at a cost that is far less: be the true owner of your ERP and only pay for the professional support that you really need. The solution is designed for SMEs that are looking for an integrated way to manage their operations, optimize processes, increase customer satisfaction and ultimately increase profitability.
[13 users on Ohloh]
OpenERP is an Open Source enterprise management software.
It covers and integrates most enterprise needs and processes: accounting, hr, sales, crm, purchase, stock, production, services management, project management, marketing campaign, management by affairs, ...

Once in production, it automates and help you to control all activities: sales triggers manufacturing orders, accounting entries are updated by stock operations, incoming mails are tracked in the sys...
Tiny ERP
[13 users on Ohloh]
Open source ERP and CRM solution. The main technical features are: a GTK2 client, a distributed server, flexible workflows, an object database (on top of PostgreSQL), dynamic GUIs, customizable reports, SOAP and XML-RPC interfaces, ...

-> Tiny ERP is now OpenERP.

[13 users on Ohloh]
JFire is an ERP, CRM, eBusiness, and SCM/SRM solution for business enterprises. It uses JavaEE, JDO, and Eclipse RCP, and is designed to be highly customizable. It is a complete and extensible solution that fulfills business needs like user management, online trade with business partners, points of sale, various distribution channels forming a distribution network, store management, etc.