Free easy to install software for linux

The Zero Install system makes software installation not merely easy, but unnecessary. Users run their applications directly from the Internet from the software authors pages.
Caching makes this as fast as running a normal application after the first time, and allows off-line use.
Main features:
- Software is only ever cached, not installed. Anyone can run any software, and nothing is run as root.
- Running a program is done in the same way whether its cached or not.
- Running cached software is as fast as running traditionally-installed software.
- Zero Install is both simpler and more secure than traditional packaging systems.
- Software can be removed from the cache to free space without affecting the behaviour of the system (it will be re-cached on demand).
- You can still run a program you cached last week, without using the net again.

deb-install is a (big) shellskript, that works on top of the package management tools provided by the debian project.
The goal is to create one command that installs any package into your system, or provides information about any package, without the user having to know all the different tools there are.
Version restrictions:
- On some systems bash reports deb-install as culprit if one of its configuration files contains an invalid command. Other then a slightly misleading error message, this doesnt have bad consequences.
Enhancements:
- Made deb-install able to recover from error when working with local files (more exactly: When working with a local file, deb-install remembers the state it is in. After it aborted, you can restart it in such a way, that it enters into that same state again [preferably after you removed the reason for the error].)
- Added option --abort-on , which lets you stop deb-install partway, when working with local files.
- Added option --dpkg-buildpackage, which lets you pass through options to that tool (used to build the .deb file if you compile from source).
- Changed location of user specific configuration files (to ~/.deb-install/deb-install.conf).
- Improved tab completion: It is faster, can expand the tilde (~), and now also works for files and directories containing spaces.
- Changed temp deletion behaviour. Now deb-install only deletes a left over temp directory if you tell it to work with a local file. That means you can install missing packages using apt-get via deb-install when a compile aborts, and resume the compile afterwards.
- Removed tracking of changes to the temp directory. The code was complicated, and now that the temp directory isnt deleted as often, I think the ability is not very useful.
- deb-install doesnt switch into searchmode anymore, if it cant find a file or package. After all, we now have tab completion, and search mode does take quite some time. Who says the user wants to do that?
- Added support for slackware packages.
- Changed interpretation of configuration files: Until now, they were read in by a simple text parser. Now they are executed by bash. This gives the user much more possibilities of how to define the variables (.e.g. conditional defines). Furthermore, all program constants are now redefineable in the conf files.
- Important: Old configuration files are NOT compatible (They contain spaces around "=", were there should be none).
- Added option --, which works just as you probably expect: No more options after this one. This allows for filenames starting with a dash.
- Expanded the documentation.

EasyIDS software is an easy to install intrusion detection system configured for Snort. Based upon Patrick Harpers Snort installation guide and modeled after the trixbox installation cd, EasyIDS is designed for the network security beginner with minimal Linux experience.
Enhancements:
- This version was designed around Centos 4.5 cd1.
- Snort was upgraded to 2.6.1.5.
- Barnyard 0.2 with unified output was implemented.
- A menu-driven multi-language capable Web application was added.
- Much more was done.

Easy Hosting Control Panel is designed for hosting multiple domains on a single machine. It uses LAMP (Linux/Apache/MySQL/PHP).
Easy Hosting Control Panel aims to be easy to install and use, simple, and functional.
Enhancements:
- The installer was improved.
- Known bugs were fixed.

Apt-get Install / Remove Packet is a tool to install/remove packets with debian apt-get.

About Apt-Get:

Advanced Packaging Tool, or APT, is a package management system used by Debian and its derivatives. APT was originally designed to work with .deb packages on Debian systems, but it has since been modified to work with RPM packages via apt-rpm, and to run on other operating systems such as Mac OS X (see fink). On systems with package management based on .deb, such as Debian, APT is a front-end for dpkg.

APT simplifies the process of installing and removing software on Unix systems, by automating the retrieval, (from the Internet, local network, or CD) the configuration, the compiling (sometimes) and the installation of software from APT sources.

There is no apt program per se; APT is a C++ library of functions that are used by several command line programs for dealing with packages, most notably apt-get and apt-cache.

APT front-ends can upgrade the system or specific packages. Packages can be installed or removed. When installing one or several packages, APT front-ends can list the dependencies of these packages, ask the administrator if packages recommended or suggested by newly installed packages should be installed too, automatically install dependencies and perform other operations on the systems packages to allow the installation of the packages. Similarly, to update one or several packages, front-ends can install, remove or update other packages.

APT is often hailed as one of Debians best features, giving Debian the reputation of being a "pain to install, but a joy to maintain", although with Debian 3.1 and its Debian-Installer, Debians installation might be too easy nowadays to keep this true.

Eprayer is a prayer request script that is easy to install and customize. It requires a MySQL database, but also creates a flat file for exporting into Excel.
Main features:
- Easy to customize
- Sends to multiple recipients
- Sends reply email to requester
- Valid XHTML and CSS
- Records information to a MySQL database as well as a flatfile for excel exporting
- Requires confirmation before sending
- Checks for errors
- Displays random requests on prayer request page
- Ability to set banned email addresses and banned words
- Released under GPL
- Free support via message boards

Install rpm with smart package is a service menu used to click on a rpm file and call smart-pm to install it. Its designed for Ekaaty Linux but must run on every KDE.
Installation:
Copy desktop fiiles to your KDE directory:
cp smart-install.desktop .kde/share/apps/konqueror/servicemenus/
cp smart-rpm-install.desktop .kde/share/applnk/
Give read permissions to these files:
chmod 644 .kde/share/apps/konqueror/servicemenus/smart-install.desktop
chmod 644 .kde/share/applnk/smart-rpm-install.desktop
Enhancements:
- Use xdg-su for better desktop integration
- More compatible with other RPM distros

Keyword Market Value Analyzer allows you to compile a database a keywords based on a particular keyword subject, and to compare their popularity with the highest amount advertisers are willing to pay to advertise for the keyword.
The result of Keyword Market Value Analyzer is a really good idea about how much money-making potential there is for the keyword.
Main features:
- Keyword Market Value Analyzer is easy to install. Just unzip, install the database tables and upload.
- Create different keyword subject groups. The groups share the same keyword data, so you can leverage the research youve done for one keyword group for another, related keyword group.
- Easily browse keywords based on market value, highest bid, or most popular.
- Makes keyword market value research as easy as it can be!