Free open source software for linux

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.

Universe project is a Open Source Master Of Orion-like game.

Universe is an Open-Source game which resembles Master Of Orion. It is written in Java.

The goal is to have as few arbitrary limits as possible, allowing games as large as you wish. It also supports a concept called "Schemes" which allows programmers to develop distinct rule sets and extensions.

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.

GroundWork Monitor Open Source is a complete availability monitoring solution that ensures IT infrastructure uptime while identifying issues before they become real problems.

Unifies best-of-breed open source tools - Nagios*, Nmap, SNMP TT, PHP, Apache, MySQL and more — through PHP/AJAX-based components and an integrated user interface to deliver the extensible functionality you require.

WebLOAD Open Source is a commercial-grade load and stress testing tool that is sponsored by RadView. The project can load-test any Internet application, including applications that use Web 2.0 and AJAX.
Whats New in 8.1.0.118 Alpha Development Release:
- This build is considered a release candidate because it contains numerous bug fixes, making it much more stable than the previous build.

Rembassy project is the base architecture for a server monitoring system inside the context of the open source movement.

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 Source Quotes DataBase is a Web site which is very similar in style to the bash.org QDB. Open Source Quotes DataBase is designed for people who would like to run their own quote sites.
Enhancements:
- The ability has been added for all admin users to change their own passwords, including mods.
- An error on some systems that stopped you from changing the admin password has been fixed.
- The voting page bug has been fixed.
- This will need a complete rewrite at a later stage.
- The browse function has been rewritten so that there are fewer problems with the page number output.
- The "Hacking Attempt" code has been fixed.