Free flying software for linux

The Unidentified Flying Raw (UFRaw) is a utility to read and manipulate raw images from digital cameras. It can be used on its own or as a Gimp plug-in. It reads raw images using Dave Coffins raw conversion utility - DCRaw.
UFRaw supports basic color management using Little CMS, allowing the user to apply color profiles. For Nikon users UFRaw has the advantage that it can read the cameras tone curves. Even if you dont own a Nikon, you can still apply a Nikon curve to your images.
My guiding concept in the development of UFRaw is to give all the essential (and some inessential) information and control over the raw conversion, with the hope that one could resolve all the exposure and white balance issues during the raw conversion.
The obvious advantage is that one can make full use of the raw data. The provisional advantage is that this way we circumvent the current 8-bit limit of the Gimp, as UFRaw does all manipulations in 16-bits.
Main features:
- Embed EXIF information - EXIF data from Nikon NEF, Canon CR2 and Pentax PEF files is embeded in the output JPEG image. This feature is in its preliminary development stages and the EXIF data is only partially created. For other file types the EXIF data is completely ignored, which is a pity. If you are interested in saving the EXIF information, you should check the ExifTool by Phil Harvey.
- Support full color management workflow.
- Zooming and croping.
UFRaw was originally based on Dave Coffins plug-in and Pawel Jochyms plug-in with live preview. Joseph Heled also offers a Gimp plug-in with some interesting features like zooming and saving EXIF information.
UFRaw is licensed under the GNU General Public License. This means that you can use it freely. If you decide to use it, the only thing that Im asking is that you will drop me a line telling me what you think of it. I might create a database of supported cameras in the future, so it would be useful if youll tell me what camera you are using and if you would be willing to test UFRaws support of your camera in the future. You can find my e-mail address at the end of this page.
Enhancements:
- This is a bug correction version.
- Non-integer shrink factors are now handled.
- A crash which occurred when the spot selector reached an image boundary was fixed.
- Some TIFF images are no longer wrongly identified as raw files.

Flying Saucer project is a pure Java XML/CSS 2 renderer whose aim is to provide spec-compliant CSS 2.1 rendering for any well-formed XML document.
The current codebase can render to Java2D-based canvases and to PDF via the iText library, and covers a great deal of the CSS 2.1 specification.
There are demos for rendering XHTML, rendering within Swing applications, and rendering to PDF. Direct rendering from DocBook or other XML formats is possible, provided the appropriate CSS is available.
Main features:
- Vertical margin collapsing; CSS 2.1 specification
- Z-index property and stacking contexts; CSS 2.1 specification
- Vertical-align: top/bottom; CSS 2.1 specification
- PDF rendering via the iText library; support for PDF bookmarks, pagination and breaks, and more
- Pagination support, automatic and explicit: CSS 2.1 specification
- Rewritten "float" implementation
- Improved list marker positioning
Enhancements:
- This release includes comprehensive table support, faster rendering, bugfixes, better image generation, near-complete compliance with the CSS 2.1 specification, including lots of improvements like better forms support, CSS counters, cursor property support, compliant font property handling, and so on.
- Theres even a completely new, fast, and compliant CSS 2.1 parser built-in.

Typespeed project is a tool and game for testing your typing speed.
Typespeeds idea is ripped from ztspeed (a DOS game made by Zorlim). The Idea behind the game is rather easy: type words that are flying by from left to right as fast as you can. If you miss 10 or more words, game is over.
There exist 3 different game modes in typespeed:
- Single player: In this mode you can play for yourself and try to get a place in your top 10 list. As you enter correct words, the speed will increase, so watch out. You can even pause the game if you are skilled enough to play so long that you need a little break.
- Training: If single player is too fast for you or you want to concentrate on correct typing, training is the perfect choice for you! In this mode you can set a constant speed. Obviously no highscore game.
- Multiplayer: If you are brave enough to use our current network code (or sit in LAN with your friends), you can experience the most fun of typespeed: challenge an opponent. During the game, written words by you or your opponent will be thrown into the opposite game, so words can be strategicaly used to make life of your opponent even harder.
Typespeed is written in C and uses curses to display the menu and game. The network code is written using core library functions. As of now, the network code is rather unstable/buggy when it comes to high loads, so dont rely on internet games; LAN works fine (and of course localhost).
Generally any POSIX-compatible system with a curses library should work, although development concentrates on GNU/Linux and ncurses. Feel free to contribute patches for your system, too! Beside of that the following systems have been tested and/or have maintained ports:
- Cygwin
- Debian GNU/Linux
- FreeBSD
- OpenBSD

MegaMek project is an unofficial, online version of the Classic BattleTech board game.
Currently, nearly all level 1 BattleTech rules and technology are working. Work is progressing on level 2 rules and technology, and most of those are functional at this point. Even some level 3 rules have been added.
MegaMek is open source, free software. It is licenced under the GPL.
Main features:
- Network or hotseat play for 2 or more players
- A cunning AI opponent for offline play
- All level 1 (3025) tech
- Most level 2 (2750, 3050+) tech
- Compatible with all 3025 mechs and many from later eras
- Most level 1 rules implemented
- Many level 2 rules implemented, including vehicles, infantry and fire
- Map board selection and editing
- Map boards based off official map packs included
- Mech selection and support for some mech editors
- Most official mech designs included
- Color graphics
- Lasers
Enhancements:
- Bug: bot died when only unarmed targets available
- Bug: occasional exceptions observing bot v bot games
- Tweak build.xml to ask for version number when packaging a new release.
- Bug 1588924: Cannot Open Custom BA Panel with Java 1.4
- Bug 1582609: Cannot load MUL that includes the TMP-3M2 "Storm Tempest"
- Bug 1585497: Check for partial cover when hitting with infernos
- Bug 1598976: Mech with Torso-Mounted Cockpit destroyed by head blown off critical.
- Bug 1591093: no units to move error when swarming infantry knocked off in accidental fall
- Body-mounted C3 Masters in Tanks should fire their TAG into the front arc,
- per the Ask the PM Forum.
- Bug 954406: Charge declaration and stacking
- Bug: Megamek required "Helvetica" font
- Bug: NPE in stop swarm attack if the swarmed unit was destroyed earlier in the phase
- Bug 1613504: Unloading BA from prone mech didnt work
- Bug 1610653: Flying BA can be thrashed
- Bug 1598816: Description of Game Option "Friendly Fire"
- Bug 1623985: Swarm LRM attacks source

Meeting Room Booking System (MRBS) is a free, GPL, web application using PHP and MySQL/pgsql for booking meeting rooms. This project is similar in concept to Netscape Calendar, but much cheaper!
Main features:
- Web/Intranet based - Available from any workstation through a Browser
- Simple to follow, Web based options and intuitive presentation
- Flexible Repeating Bookings
- Authentication with your existing user database (eg Netware, NT Domain, NIS etc.)
- Ensures that conflicting entries cannot be entered
- Reporting option
- Selectable DAY / WEEK / MONTH views
- Multiple auth levels (read-only, user, admin)
- Multiple languages supported (translated to Czech, Chinese, Danish, Dutch, Finnish, French, German, Greek, Italian, Japanese, Norwegian, Portuguese, Spanish, Swedish)
- Stable and in use at many organizations
- mySQL and Postgres support
MRBS is very reliable at this point. All the features that are needed in day-to-day operation are included. Its very intuitive for users, so very little or no instruction is needed. It is in production use at many large organisations around the world for uses as diverse as its originally intended meeting rooms to restaurant tables and aeroplanes at a flying school!
Different languages are supported, there are translations for many languages available (currently Czech, Chinese, Danish, Dutch, Finnish, French, German, Greek, Italian, Japanese, Norwegian, Portuguese, Spanish, Swedish). If your language is not supported it is very easy to customize as all strings are stored in language-specific files.
Enhancements:
- Extra options were added to the LDAP authentication scheme.
- You can now configure the cookie path used by the cookie and PHP session schemes.
- A short PHP start tag was fixed.
- Meeting duration can now use , as the decimal point.
- The Swedish translation was updated.
- AIX support was added.
- The language preference code was improved.
- Some bracketing in the month view was corrected.

Data::SecsPack is a Perl module pack and unpack numbers in accordance with SEMI E5-94.

SYNOPSIS

#####
# Subroutine interface
#
use Data::SecsPack qw(bytes2int config float2binary
ifloat2binary int2bytes
pack_float pack_int pack_num
str2float str2int
unpack_float unpack_int unpack_num);

$big_integer = bytes2int( @bytes );

$old_value = config( $option );
$old_value = config( $option => $new_value);

($binary_magnitude, $binary_exponent) = float2binary($magnitude, $exponent, @options);

($binary_magnitude, $binary_exponent) = ifloat2binary($imagnitude, $iexponent, @options);

@bytes = int2bytes( $big_integer );

($format, $floats) = pack_float($format, @string_floats, [@options]);

($format, $integers) = pack_int($format, @string_integers, [@options]);

($format, $numbers, @string) = pack_num($format, @strings, [@options]);

$float = str2float($string, [@options]);
(@strings, @floats) = str2float(@strings, [@options]);

$integer = str2int($string, [@options]);
(@strings, @integers) = str2int(@strings, [@options]);

@ingegers = unpack_int($format, $integer_string, @options);

@floats = unpack_float($format, $float_string, @options);

@numbers = unpack_num($format, $number_string), @options;

#####
# Class, Object interface
#
# For class interface, use Data::SecsPack instead of $self
#
use Data::SecsPack;

$secspack = Data::SecsPack; # uses built-in config object

$secspack = new Data::SecsPack(@options);

$big_integer = bytes2int( @bytes );

($binary_magnitude, $binary_exponent) = $secspack->float2binary($magnitude, $exponent, @options);

($binary_magnitude, $binary_exponent) = $secspack->ifloat2binary($imagnitude, $iexponent, @options);

@bytes = $secspack->int2bytes( $big_integer );

($format, $floats) = $secspack->pack_float($format, @string_integers, [@options]);

($format, $integers) = $secspack->pack_int($format, @string_integers, [@options]);

($format, $numbers, @strings) = $secspack->pack_num($format, @strings, [@options]);

$integer = $secspack->str2int($string, [@options])
(@strings, @integers) = $secspack->str2int(@strings, [@options]);

$float = $secspack->str2float($string, [@options]);
(@strings, @floats) = $secspack->str2float(@strings, [@options]);

@ingegers = $secspack->unpack_int($format, $integer_string, @options);

@floats = $secspack->unpack_float($format, $float_string, @options);

@numbers = $secspack->unpack_num($format, $number_string, @options);

Generally, if a subroutine will process a list of options, @options, that subroutine will also process an array reference, @options, [@options], or hash reference, %options, {@options}. If a subroutine will process an array reference, @options, [@options], that subroutine will also process a hash reference, %options, {@options}. See the description for a subroutine for details and exceptions.

The subroutines in the Data::SecsPack module packs and unpacks numbers in accordance with SEMI E5-94. The E5-94 establishes the standard for communication between the equipment used to fabricate semiconductors and the host computer that controls the fabrication. The equipment in a semiconductor factory (fab) or any other fab contains every conceivable known microprocessor and operating system known to man. And there are a lot of specialize real-time embedded processors and speciallize real-time embedded operating systems in addition to the those in the PC world.

The communcication between host and equipment used packed nested list data structures that include arrays of characters, integers and floats. The standard has been in place and widely used in China, Germany, Korea, Japan, France, Italy and the most remote corners on this planent for decades. The basic data structure and packed data formats have not changed for decades.

This stands in direct contradiction to the common conceptions of many in the Perl community and most other communities. The following quote is taken from page 761, Programming Perl third edition, discussing the pack subroutine:

"Floating-point numbers are in the native machine format only. Because of the variety of floating format and lack of a standard "network" represenation, no facility for interchange has been made. This means that packed floating-point data written on one machine may not be readable on another. That is a problem even when both machines use IEEE floating-point arithmetic, because the endian-ness of memory representation is not part of the IEEE spec."

There are a lot of things that go over the net that have industry or military standards but no RFCs. So unless you dig them out, you will never know they exist. While RFC and military standards may be freely copyied, industry standards are usually copyrighted. This means if you want to read the standard, you have to pay whatever the market bears. ISO standards, SEMI stardards, American National Standards, IEEE standards beside being boring are expensive. In other words, you do not see them flying out the door at the local Barnes and Nobles. In fact, you will not even find them inside the door.

It very easy to run these non RFC standard protocols over the net. Out of 64,000 ports, pick a port of opportunity (hopefully not one of those low RFC preassigned ports) and configure the equipment and host to the same IP and port. Many times the software will allow a remote console that is watch only. The watch console may even be a web server on port 80. If there is a remote soft console, you can call up or e-mail the equipment manufacturers engineer in say Glouster, MA, USA and tell him the IP and port so he can watch his manchine mangle a cassette of wafers with a potential retail value of half million dollars.

SEMI E5-94 and their precessors do standardize the endian-ness of floating point, the packing of nested data, used in many programming languages, and much, much more. The endian-ness of SEMI E5-94 is the first MSB byte, floats sign bit first. Maybe this is because it makes it easy to spot numbers in a packed data structure.
The nested data has many performance advantages over the common SQL culture of viewing and representing data as tables. The automated fabs of the world make use of SEMI E5-94 nested data not only for real-time communication (TCP/IP RS-2332 etc) between machines but also for snail-time processing as such things as logs and performance data.

Does this standard communications protocol ensure that everything goes smoothly without any glitches with this wild mixture of hardware and software talking to each other in real time? Of course not. Bytes get reverse. Data gets jumbled from point A to point B. Machine time to test software is non-existance. Big ticket, multi-million dollar fab equipment has to work to earn its keep. And, then there is the everyday business of suiting up, with humblizing hair nets, going through air and other showers with your favorite or not so favorite co-worker just to get into the clean room. And make sure not to do anything that will scatch a wafer with a lot of Intel Pentiums on them. It is totally amazing that the product does get out the door.

Space Commander is a game that aims to be similar to Elite and Privateer, with maybe a bit of Trade Wars thrown in.
The project is a remarkably functional space simulation with under 200 lines of code in the main file.
DEPENDENCIES
You need a recent version of Python and some support libraries. The game is currently being written using Python v 2.4.3 but it may work with newer or older versions with some minor tweaking. I intend to be using Python 2.5 and PyGame 1.8 shortly.
- Python 2.4.3
- PyGame 1.7
- Numeric 22.0
Basically you need a pretty complete Python kit. Most Linux distributions should have everything that you need and Windows / OSX users will be able to install it all with a small bit of effort.
To play the MIDI score in Linux you have to install and configure Timidity due to some old code in sdl-mixer which is a pre-dependency of PyGame. If the game crashes and
complains about midi, just comment out the MIDI line in spacecommander.py to disable it.
As to performance issues. I pass the buck. If it runs too slowly then get a faster computer, better graphics card, better operating system, whatever.
The idea of writing this in Python is to have a compromise between ultimate performance and the ability to understand and tinker around with the code.
You could try reducing the number of stars in the galaxy by editing bigbang.py also.
Feel free to re-write the game in hand optimized assembler, but you must send me a copy of your code per the LICENSE.
RUNNING THE GAME
Linux: ./spacecommander.py
KEYBOARD COMMANDS
ESC / Q: Quit the game
Left / Right: Yaw
Up / Down: Pitch
PgUp / PgDN: Roll
Enhancements:
- The main engine was completely rewritten and now supports flying a spaceship around a randomly generated galaxy. 2D rendering of objects using PyGame is supported.
- Mouse flight control is featured.