Free optimized software for linux

Orpie is a fullscreen RPN calculator for the console. Its operation is similar to that of modern HP calculators, but data entry has been optimized for efficiency on a PC keyboard.
Features include extensive scientific calculator functionality, units support, base conversions, command completion, configurable keybindings, and a visible interactive stack.
Main features:
- real and complex numbers and matrices
- extensive function library
- command completion of function names
- base conversions
- units and conversion factor handling
- exact integer arithmetic, with unlimited integer size
- visible stack, with browsing/modification capability
- user-defined variables
- user-configurable keybindings, via a Mutt-like rcfile
- context-sensitive help

Compact Filter is a network packet filter for Linux. It features an easy-to-use compact filter representation and high performance.
The main features are: easy to use interface, compact filter representation (memory efficient), and very high performance.
A difference between CF and other firewalls, such as Netfilter, is its representation of the ruleset. In CF the user writes a filter which is then compiled and optimized in user-space. The optimized filter is then loaded into the kernel (using netlink). Consequently the in kernel packet filtering code only needs funtionality for setting up a filter and filtering packets, while the more complex code of optimizing the filter remains in user-space.
Because of the continuous increase of the bandwidth and the security threats, firewalls have to evolve towards more efficient filtering schemes. The truth is that the existing scheme does not scale so well with the combined growth of bandwidth and rulesets.
Our aim is to try another approach to perform packet filtering where we minimize the complexity of the filtering process. This result in, both, a reduction of the required CPU power to filter packets and a simpler (and smaller) kernel code. Of course, we are pushing all the smart and complex part out to the user-space, but, developing in user-space is much simpler and safer.
Enhancements:
- changed -d option to delete all filters
- added -D option to delete a specific filter
- changed default policy to permit rather than deny
- added -l option on flex to support --yylineno on older versions of flex
- new and improved install guide

KnoppMyth is an attempt to make the installation of GNU/Linux and MythTV as trivial as possible.

KnoppMyth includes everything needed to get your set-top box up and running in as little time as possible.

NativeCall is a Java toolkit that lets you call operating system methods from whithin Java without JNI code.
The current version 0.4.0 supports structs, Strings, primitive types (ints and booleans), byte and char arrays and output parameters.
NativeCall 0.4.0 implements some minor changes to make the API more consistent and easier. NativeCall project also features more unit tests.
Enhancements:
- The previous release could not create multiple pointers correctly.
- Javadoc for Win32Verifier#verifyModuleName(String) was corrected.
- Using a new Holder(null) now means new Holder(new Integer(0)).
- Constructor method IDs are now cached.
- int hashCode() methods have been optimized.

ICEL project provides database-based learning engine for eggdrop bots.
ICEL stands for Interactive Commands for E-Learning and consists on a set of .tcl scripts that gives learning capabilities to an eggdrop bot.
It has been coded to be used on IRC help channels and uses a MySQL database to store the information.
Main features:
- Stable and optimized
- Can store multiple definitions per unit
- Fast access and the bot never floods himself off
- Some limits user editable (see icel.tcl)
- Redirection to channels or users
- Search capabilities
- Charset independent

The Dark Star is an operating system, optimized for user experience, providing many desktop and office programs.
The Dark Star can fit on MiniDVDs and is distributed as a LiveDistro which can later be installed to harddisk, effectively being an option for those who want FreeBSD, however are scared by the installer and the tons of configuration.
The Dark Star also provides the easy to use DSI - making installing packages -
whether from an FreeBSD 6.1 install CD or downloaded, easy as two or three
clicks with a mouse!
What are you waiting for? Download The Dark Star 4.0 now!
Enhancements:
- More polished. See the forum.

CB3ROB Identd is an identd implementing the auth (RFC1413) protocol for use on public Unix machines. Unlike with other ident daemons, the AUTH protocol replies from this daemon cannot be spoofed by users.

CB3ROB Identd project has been optimized to handle as many requests as possible, and has been tested to work on most Linux distributions without modification.

Installation:

- become root
- unpack the files ("tar -xvzf cb3rob-identd-1.2.tgz")
- chdir to the cb3rob-identd directory ("cd cb3rob-identd")
- type "make install"
- add the service to your inet daemon (inetd or xinetd) config file
- restart inetd or xinetd

PyGTK Shell provides widgets derived from PyGTK optimized for interactive programming as well as an interactive, extensible PyGTK console for the rapid prototyping of GUI applications. It can be embedded by PyGTK applications.