Free open sourced software for linux

Open Source in Tab is an extension which opens the pages source file in a new tab.

Opens the pages source file in a new tab. Has a preference to either open source in a new tab or existing tab.

Sequoia ERP is a true enterprise-class open source ERP solution. It combines the advanced features and scalability required for enterprise software with the flexibility and low cost of ownership that only open source can deliver.
Main features:
- Full Suite of integrated applications that deliver a 360-degree view of your business.
- Compatible all major open source and commercial relational databases, including MySQL, PostgreSQL, Oracle, Sybase, and Microsoft SQL Server.
- Runs on Linux, Unix, and Windows operating platforms.
- Service-Oriented Architecture for easy interoperability with external or legacy applications.
- Remote and local synchronization for scalability and high availability.
- Workflow for adapting to unique business processes.
- Available under the business-friendly MIT Public License.

Open LMS project consists of a learning management system.
OpenLMS is a Learning Management System (LMS) made at the Department of Geography, NTNU.
The system is a fully functional LMS with support for group collaboration, file sharing, distribution of lectures, and other supporting features.
It is a good tool for distributing lecture notes to groups of students, and for facilitating collaboration for groups of students and teachers.
The system has successfully been used at the Dept. of Geography at NTNU in Trondheim Norway, for three years. It is continuously further developed and was released as OpenSource software last year.
OpenLMS now supports English (core language) and Norwegian. Steps has been taken to translate for further languages.
Scorm, Dublin Core, AICC etc. could be important factors in systems like OpenLMS and similar LMS/LCMS. Support for exporting objects for these standards will probably be incorporated into OpenLMS. HOWEVER - the focus of standards for the exchange of learning objects often overshadows the lack of a culture for sharing within the organizations in question.
This very resource-demanding part of a LMS/LCMS is therefore not focused at the present stage in the development.
Main features:
- upload lecture notes (any filetypes)
- distribute levture notes
- groupware / email to groups
- personal file archive
- assignment administration
- media archive and termbank
- organize webresources
- language support for norwegian, english and german (may easily be extended)

Quake II Open Source project consists of the open source extended version of Quake II from Id.
Quake II Open Source is the open source version of the commercial first person shooter Quake II.
It has been updated from the commercial version for security, performance, and functionality.
For this to be of any use, you _must_ own a copy of Quake 2. The demo would also work, but you might as well buy the full thing now.
These modifications are intended for Linux users, as I do not have have access to other platforms.
Be sure to install SDL 1.2 (http://www.libsdl.org) if you want to use the softsdl or sdlgl drivers, or the sdlquake2 binary.
make will, by default, build both the debug and release files.
To build just the optimized binaries: make build_release
The resulting binaries are then put in releasei386.
System requirements:
- SDL

Open Journal Systems (OJS) is a journal management and publishing system that has been developed by the Public Knowledge Project through its federally funded efforts to expand and improve access to research.
Main features:
- OJS is installed locally and locally controlled.
- Editors configure requirements, sections, review process, etc.
- Online submission and management of all content.
- Subscription module with delayed open access options.
- Comprehensive indexing of content part of global system.
- Reading Tools for content, based on field and editors choice.
- Email notification and commenting ability for readers.
- Complete context-sensitive online Help support.
OJS assists with every stage of the refereed publishing process, from submissions through to online publication and indexing. Through its management systems, its finely grained indexing of research, and the context it provides for research, OJS seeks to improve both the scholarly and public quality of referred research.
OJS is open source software made freely available to journals worldwide for the purpose of making open access publishing a viable option for more journals, as open access can increase a journals readership as well as its contribution to the public good on a global scale (see PKP Publications).

Open Tranquera is a repository of reusable components for J2EE application development.

There are UI extensions, Services, and a Persistence layer, integrated with existing open source frameworks.

Open Conference Systems or OCS for short, is a free Web publishing tool that will create a complete Web presence for your scholarly conference.
Main features:
- create a conference Web site
- compose and send a call for papers
- electronically accept paper and abstract submissions
- allow paper submitters to edit their work
- post conference proceedings and papers in a searchable format
- post, if you wish, the original data sets
- register participants
- integrate post-conference online discussions
Enhancements:
- manage conferences that occur more than once (e.g. yearly)
- an expanded, multiple-round review system
- e-mail template system
- localization & translation tools
- credit card payment for registrations
- automated "thanks-for-submitting" messages
- accept login/password for participants
- Creative Commons licensing of presentations
- more customizable, scalable and secure code
- ...and much more.