Free grey software for linux

SQLgrey is a Postfix greylisting policy service with auto- whitelisting and an SQL database as storage backend.
The project is based on postgrey, refining auto-whitelisting and storing whitelists and connection attempts in a database. Its goal is reducing the amount of spam reaching user mailboxes.
Main features:
- SQLgrey can withstand a database crash (grey-listing is automatically switched off)
- 3 grey-listing algorithms to choose from
- Support for file-based IP and FQDN whitelists
- Support for fetching up-to-date whitelists from a repository
- Can mail the admin when the database is unavailable
- Auto-whitelists now understand SRS (SPF-aware mail forwarding)
- IPv6 support
- OPTIN / OPTOUT support
- Fine log controls
- Activity reports

Color::Object is a OO-Color Module.

A module for manipulation Colors within RGB, HSV and HSL color-spaces for usage within PDF-Documents especially with the Text::PDF::API modules.

SYNOPSIS

use Color::Object;

$cl = Color::Object->new;
$cl = Color::Object->newRGB($r,$g,$b);
$cl = Color::Object->newHSV($h,$s,$v);
$cl = Color::Object->newHSL($h,$s,$l);

$cl->setRGB($r,$g,$b);
$cl->addBrightness($br);
($h,$s,$l) = $cl->asHSL;

METHODS

Color::Object->new
Color::Object->newRGB $r, $g, $b
Color::Object->newHSV $h, $s, $v
Color::Object->newHSL $h, $s, $l
Color::Object->newGrey $grey
( $r, $g, $b ) = $cl->asRGB
Returns $cls rgb values. Range [0 .. 1].
( $h, $s, $v ) = $cl->asHSV
Returns $cls hsv values. Ranges h [0 .. 360], s/v [0 .. 1].
( $h, $s, $l ) = $cl->asHSL
Returns $cls hsl values. Ranges h [0 .. 360], s/l [0 .. 1].
$grey = $cl->asGrey
$grey = $cl->asGrey2
Returns $cls grey value. Range [0 .. 1]. Functions 2 returns the geometric mean of the corresponding RGB values.
( $c, $m, $y )= $cl->asCMY
Returns $cls cmy values. Range [0 .. 1].
( $c, $m, $y, $k )= $cl->asCMYK
( $c, $m, $y, $k )= $cl->asCMYK2
( $c, $m, $y, $k )= $cl->asCMYK3
Returns $cls cmyk values. Range [0 .. 1]. Function 2 returns a 25% lighter color-equivalent. Function 3 returns a 25% lighter color-equivalent.
$hex = $cl->asHex
Returns $cls rgb values as 6 hex-digits.
$cl->setRGB $r, $g, $b
Sets the $cls rgb values. Valid range [0 .. 1].
$cl->setHSV $h, $s, $v
Sets the $cls hsv values. Valid ranges: h [0..360], s/v [0..1].
$cl->setHSL $h, $s, $l
Sets the $cls hsl values. Valid ranges: h [0..360], s/l [0..1].
$cl->setGrey $grey
Sets the $cls grey value. Valid range [0 .. 1].
$cl->setHex $hex
Sets the $cls rgb values using 6 hex-nibbles.
$cl->addSaturation $saturation
Adds to the $cls saturation in the HSV model. Valid range [-1 .. 1].
$cl->setSaturation $saturation
Sets the $cls saturation in the HSV model. Valid range [0 .. 1].
$cl->rotHue $degrees
Rotates the $cls hue in the HSV/L model. Valid range [-360 .. 360].
$cl->setHue $hue
Sets the $cls hue in the HSV/L model. Valid range [0 .. 360].
$cl->addBrightness $brightness
Adds to the $cls brightness in the HSV model. Valid range [-1 .. 1].
$cl->setBrightness $brightness
Sets the $cls brightness in the HSV model. Valid range [0 .. 1].
$cl->addLightness $lightness
Adds to the $cls lightness in the HSL model. Valid range [-1 .. 1].
$cl->setLightness $lightness
Sets the $cls lightness in the HSL model. Valid range [0 .. 1].

gprof2dot.py script can convert the output from gprof into a dot graph. It can correctly parse C++ template function names, allows you to prune nodes and edges below a certain threshold, can parse the special notation gprof uses for mutually recursive functions, uses color efficiently to draw attention to hot-spots, and works on any platform where GNU gprof, graphviz, and Python are available, i.e. virtually anywhere.
Main features:
- can correctly parse C++ template function names;
- allows to prune nodes and edges below a certain threshold;
- can parse the special notation gprof uses for mutually recursive functions;
- uses color efficiently to draw attention to hot-spots;
- works on any platform where GNU gprof, graphviz, and Python is available, i.e, virtually anywhere.
Usage:
gprof2dot.py [options] [file]
Options:
--version show programs version number and exit
-h, --help show this help message and exit
-o FILE, --output=FILE
output filename [stdout]
-n PERCENTAGE, --node-thres=PERCENTAGE
eliminate nodes below this threshold [default: 0.05]
-e PERCENTAGE, --edge-thres=PERCENTAGE
eliminate edges below this threshold [default: 0.01]
-c COLORMAP, --colormap=COLORMAP
color map: color, pink or gray [default: color]
-s, --strip strip function parameters, template parameters, and
const modifiers from demangled C++ function names
-w, --wrap wrap function names
Enhancements:
- The output produced by gprof with the static call graph option is now handled.
- The ability to read output generated by the Python profilers was added.

FreeType 2 is a software font engine that is designed to be small, efficient, highly customizable and portable while capable of producing high-quality output (glyph images). FreeType 2 project can be used in graphics libraries, display servers, font conversion tools, text image generation tools, and many other products as well.
Note that FreeType 2 is a font service and doesnt provide APIs to perform higher-level features, like text layout or graphics processing (e.g. colored text rendering, "hollowing", etc..).
However, it greatly simplifies these tasks by providing a simple, easy to use and uniform interface to access the content of font files.
FreeType 2 is released under two open-source licenses: our own BSD-like FreeType License and the GPL. It can thus be used by any kind of projects, be they proprietary or not.
Main features:
- FreeType 2 provides a simple and easy-to-use API to access font content in a uniform way, independently of the file format. Additionally, some format-specific APIs can be used to access special data in the font file.
- Unlike most comparable libraries, FreeType 2 supports scalable font formats like TrueType or Type 1 natively and can return the outline data (and control instructions/hints) to client applications.
- The design of FreeType 2 is based on modules that can be either linked statically to the library at compile time, or loaded on demand at runtime. Modules are used to support specific font formats, or even new glyph image formats !
- FreeType 2 was written with embedded systems in mind. This means that it doesnt use static writable data (i.e. it can be run from ROM directly), that client applications can provide their own memory manager and i/o stream implementation.
- The latter allows you to easily read from ROM-based, compressed or remote font files with the same API. Several stream implementations can be used concurrently with a single FreeType 2 instance.
- You can also reduce the size of the FreeType 2 code by only compiling the modules you need for your embedded project/environment.
- By default, FreeType 2 supports the following font formats:
- TrueType fonts (and collections)
- Type 1 fonts
- CID-keyed Type 1 fonts
- CFF fonts
- OpenType fonts (both TrueType and CFF variants)
- SFNT-based bitmap fonts
- X11 PCF fonts
- Windows FNT fonts
- BDF fonts (including anti-aliased ones)
- PFR fonts
- Type42 fonts (limited support)
- From a given glyph outline, FreeType 2 is capable of producing a high-quality monochrome bitmap, or anti-aliased pixmap, using 256 levels of "gray". This is much better than the 5 levels used by Windows 9x/98/NT/2000 or FreeType 1.
- FreeType 2 supports all the character mappings defined by the TrueType and OpenType specification. It is also capable of automatically synthetizing a Unicode charmap from Type 1 fonts, which puts an end to the painful "encoding translation" headache common with this format (of course, original encodings are also available in the case where you need them..).
- The FreeType 2 core API provides simple functions to access advanced information like glyph names or kerning data.
- A full-featured and efficient TrueType bytecode interpreter. The engine is able to produce excellent output at small point sizes. This component has been extremely difficult to get right, due to the ambiguous and misleadings TrueType specifications. However, we now match Windows and Mac qualities. Please read our Patents page to learn more about some issues when using the interpreter.
- For those who dont need or want to use the bytecode interpreter for TrueType fonts, we developed our own automatic hinter module. It is also used by other scalable formats.
- FreeType 2 provides information that is often not available from other similar font engines, like kerning distances, glyph names, vertical metrics, etc..
- Due to its modular design, its easy to enhance the library to provide additional format-specific information through optional APIs (as an example, an optional API is provided to retrieve SFNT tables from TrueType and OpenType fonts).
- FreeType 2 provides its own caching subsystem since release 2.0.1. It can be used to cache either face instances or glyph images efficiently.

Coriander project is the Linux graphical user interface (GUI) for controlling a Digital Camera through the IEEE1394 bus (aka FireWire, or iLink).
Coriander is full featured and besides changing the parameters of the camera it will also let you record video, send images to an FTP site, convert the video to a V4L stream,... A live display is of course provided too.
Best of all, Coriander will work with any camera that is compatible with the IIDC specifications (also known as DCAM specs). This includes most 1394 webcams and a majority of industrial or scientific cameras too.
However, any cameras in which you can insert a video tape (camcorders,...) will NOT work with coriander. These cameras record compressed DV video on the tape, while the IIDC specify uncompressed, on-the-fly video flows.
Main features:
- change picture mode and format.
- camera on/off/reset
- control of Auto/man/one-push-auto, on/off, value and absolute value for all standard features
- memory channel save/load
- full Format_7 control
- control of the external trigger
- transmission on/off/restart
Enhancements:
- Upgrade the framerate calculation to use the timestamps sent by the kernel (through libdc1394)
- Add a counter that shows dropped frames warnings. A warning is issued when the difference between a pervious period and a new period is larger than 50%.
- fixed the bit depth. If the bit depth is available in the camera, it will be used. Otherwise the manual control will be available. I still have problems with my Basler 602f though. It has 10bits but the image is not good: saturated regions appear mid-grey (128) and the other regions are noise.
- sync with libdc1394 (SVN 391)
- fixed missing string in trigger_source_list
- sync with libdc1394
- add more details to configure messages
- added PIO, SIO and strobe direct register read/write
- remove spurious debug messages
- revert part of the change of Feb. 1st regarding the Flea 2 because some other manufacturers implementation systematically fail one of the tests.
- fixed wrong argument order of WritePVNHeader(). Thanks to John Shen.
- Disable features if they dont support any control mode or if they are OFF and their power cant be controlled. This solves a few issues we had with the Flea 2 from Point Grey.
- little update of the "About" window
- dont set 1394b at boot time: let the user do it manually.
- move and fix `extern declarations of string arrays from build_menus.c, build_ranges.c, thread_save.c, tools.c, update_frames.c and update_ranges.c to coriander.h

GOCR is an OCR (Optical Character Recognition) program, developed under the GNU Public License. It converts scanned images of text back to text files. Joerg Schulenburg started the program, and now leads a team of developers.

GOCR can be used with different front-ends, which makes it very easy to port to different OSes and architectures. It can open many different image formats, and its quality have been improving in a daily basis.

GOCR or JOCR?

The original name is GOCR. Its what is used internally in the sources. But, when registering the site at Sourceforge, gocr was already taken. So, its kind of both. Yeah, we know.

Some examples of how you can use gocr:

gocr -h # help
gocr file.pbm # minimum options
gocr -v 1 file.pbm >out.txt 2>out.log # generate text- and log file
djpeg -pnm -gray text.jpg | gocr - # using JPEG-files
gzip -cd text.pbm.gz | gocr - # using gzipped PBM-files
giftopnm text.gif | gocr - # using GIF-files
gocr -v 1 -v 32 -m 4 file.pbm # zoning and out30.bmp output
xli -geometry 400x400 out30.bmp # see details using xli (recommanded viewer)
wish gocr.tcl # X11-tcl/tk-frontend (development version)
# see manual pages for more details