Free very high quality software for linux

MySQL High Availability clustering is a set of scripts and programs that provide a high availability database cluster using MySQL replication.
MySQL High Availability clustering is transparent to client applications, as the cluster uses a shared logical IP to provide the service.
Enhancements:
- References have been changed from MASTER_NODE to CLUSTER_IP in takeover, failover, and slave_routine, when it was appropiate.
- This release introduces changes in compat.sh, several main cluster files, and the installation documentation, according to bug reports 1707251 and 1707212.

High Visibility Calculator is a high visibility calculator for people with disabilities.

Large buttons with bold text are easy to push for people with motor control or vision problems.

3ivx is an MPEG-4 toolkit that supports MPEG-4 Video, MPEG-4 Audio and the MP4 file format. 3ivx D4 4.5 allows video and audio to be compressed to a fraction of its original size while maintaining high image quality.

You can store over 2 hours of near DVD quality audio and video on a single CD-ROM or stream near DVD quality video over a cable modem or DSL modem.

Supported File Formats:

- Input Files: 3GP, AAC, DivX, MOV, MP4
- Output Files: AVI, MOV, MP4

Why should I install 3ivx?

The 3ivx decoder plays back most MPEG-4 files (including MP4, M4A, 3GP and MOV files) with MPEG-4 AAC Audio and MPEG-4 Video (such as DivX 3, 4 and 5, Apple MPEG-4, Philips MPEG-4 and XviD) using Windows Media Player or other compatible players. The Audio Decoder can play back MPEG-4 Multi-Channel High Efficiency AAC including audio encoded by Nero AAC and iTunes.

The 3ivx encoder produces industry-leading compact high quality MPEG-4 Audio and Video and is distributed as a plug-in for QuickTime as well as plug-ins for Video for Windows and DirectShow.

This allows you to encode MPEG-4 Audio and Video in AVI, MOV or MP4 files with the encoding application of your choice.

The 3ivx encoder produces industry-leading compact high quality MPEG-4 Audio and Video and is distributed as a plug-in for QuickTime as well as plug-ins for Video for Windows and DirectShow. This allows you to encode MPEG-4 Audio and Video in AVI, MOV or MP4 files with the encoding application of your choice.

Because of its core design and optimization the 3ivx codec maintains a record-breaking speed.

3ivx Delta 4 - 4.0.3 plays back DivX 3.x, 4.x, 5.x, OpenDivX, XviD, FFMpeg, AngelPotion, SMR, Philips MPEG-4, Apple MPEG-4, MS-MPEG-4v3, 3ivx D3, D3.5 and 4, RealMagic MPEG-4, Sorenson MPEG-4, Blizzard MPEG-4 and other MPEG-4 variants.

Bug Squish is a game in which you have to squish bugs before they suck all the blood out of your arm.
In Bug Squish, you must defend your arm from an onslaught of blood-sucking insects. Use your fly-swatter to squish them before they suck you dry.
Bug Squish is based on the shareware game "Blood Suckers" for MacOS.
Main features:
Game Play:
- 32 waves of attacking insects
- "Extra Blood" and "Bonus Score Multiplier" extras
- Multiple bug types
Sound:
- Humorous, high quality sound effects
- Fun music
Control:
- Mouse control
Enhancements:
- Fixed "Ugh" and "Ouch" sounds for embedded version.
- Added Start and Continue buttons to embedded title screen.
- Game pauses when you press Escape (Cancel) in embedded version.
- Game state saved when you quit, loaded when you start again, so you can unpause even if youve quit the game completely!
- Splatted bugs eventually vanish in embedded version.
- Embedded version uses hidden file (~/.bugsquish) for high score, instead of a visible one (~/bugsquish.dat)
- Embedded version uses mouse motion, not mouse button press. (Too easy to not lift stylus high enough.)

The Persistence of Vision Ray-Tracer creates three-dimensional, photo-realistic images using a rendering technique called ray-tracing. It reads in a text file containing information describing the objects and lighting in a scene and generates an image of that scene from the view point of a camera also described in the text file.
The Persistence of Vision Ray-Tracer(tm) was developed from DKBTrace 2.12 (written by David K. Buck and Aaron A. Collins) by a bunch of people (called the POV-Team?) in their spare time. The headquarters of the POV-Team is on the internet (see "Where to Find POV-Ray Files" for more details).
The POV-Ray package includes detailed instructions on using the ray-tracer and creating scenes. Many stunning scenes are included with POV-Ray so you can start creating images immediately when you get the package. These scenes can be modified so you do not have to start from scratch.
In addition to the pre-defined scenes, a large library of pre-defined shapes and materials is provided. You can include these shapes and materials in your own scenes by just including the library file name at the top of your scene file, and by using the shape or material name in your scene.
Ray-tracing is not a fast process by any means, but it produces very high quality images with realistic reflections, shading, perspective and other effects.
Ray-tracing is a rendering technique that calculates an image of a scene by simulating the way rays of light travel in the real world. However it does its job backwards. In the real world, rays of light are emitted from a light source and illuminate objects. The light reflects off of the objects or passes through transparent objects. This reflected light hits our eyes or perhaps a camera lens. Because the vast majority of rays never hit an observer, it would take forever to trace a scene.
Ray-tracing programs like POV-Ray start with their simulated camera and trace rays backwards out into the scene. The user specifies the location of the camera, light sources, and objects as well as the surface texture properties of objects, their interiors (if transparent) and any atmospheric media such as fog, haze, or fire.
For every pixel in the final image one or more viewing rays are shot from the camera, into the scene to see if it intersects with any of the objects in the scene. These "viewing rays" originate from the viewer, represented by the camera, and pass through the viewing window (representing the final image).
Every time an object is hit, the color of the surface at that point is calculated. For this purpose rays are sent backwards to each light source to determine the amount of light coming from the source. These "shadow rays" are tested to tell whether the surface point lies in shadow or not. If the surface is reflective or transparent new rays are set up and traced in order to determine the contribution of the reflected and refracted light to the final surface color.
Special features like inter-diffuse reflection (radiosity), atmospheric effects and area lights make it necessary to shoot a lot of additional rays into the scene for every pixel.
Main features:
- Easy to use scene description language.
- Large library of stunning example scene files.
- Standard include files that pre-define many shapes, colors and textures.
- Very high quality output image files (up to 48-bit color).
- 16 and 24 bit color display on many computer platforms using appropriate hardware.
- Create landscapes using smoothed height fields.
- Many camera types, including perspective, orthographic, fisheye, etc.
- Spotlights, cylindrical lights and area lights for sophisticated lighting.
- Photons for realistic, reflected and refracted, caustics. Photons also interact with media.
- Phong and specular highlighting for more realistic-looking surfaces.
- Inter-diffuse reflection (radiosity) for more realistic lighting.
- Atmospheric effects like atmosphere, ground-fog and rainbow.
- Particle media to model effects like clouds, dust, fire and steam.
- Several image file output formats including Targa, BMP (Windows only), PNG and PPM.
- Basic shape primitives such as ... spheres, boxes, quadrics, cylinders, cones, triangle and planes.
- Advanced shape primitives such as ... Tori (donuts), bezier patches, height fields (mountains), blobs, quartics, smooth triangles, text, superquadrics, surfaces of revolution, prisms, polygons, lathes, fractals, isosurfaces and the parametric object.
- Shapes can easily be combined to create new complex shapes using Constructive Solid Geometry (CSG). POV-Ray supports unions, merges, intersections and differences.
- Objects are assigned materials called textures (a texture describes the coloring and surface properties of a shape) and interior properties such as index of refraction and particle media (formerly known as "halos").
- Built-in color and normal patterns: Agate, Bozo, Bumps, Checker, Crackle, Dents, Granite, Gradient, Hexagon, Leopard, Mandel, Marble, Onion, Quilted, Ripples, Spotted, Spiral, Radial, Waves, Wood, Wrinkles and image file mapping. Or build your own pattern using functions.
- Users can create their own textures or use pre-defined textures such as ... Brass, Chrome, Copper, Gold, Silver, Stone, Wood.
- Combine textures using layering of semi-transparent textures or tiles of textures or material map files.
- Display preview of image while rendering (not available on all platforms).
- Halt and save a render part way through, and continue rendering the halted partial render later.

SimCList project is a high quality C library for handling lists.
SimCList is available for free, under restrictions imposed by the BSD license.
SimCList API is good because:
- it is simple, yet powerful
- it makes elegant and consistent use of information hiding
- it abstracts the actual data type to store
- it is fairly total
The library itself is very performant and makes a good compromise between performance in terms of time and space:
- insertion is O(n) [typically n/8]
- extraction and deletion are O(n) [typically n/8]
- iteration is O(1)
- sorting is always O(n logn), without worst case
Thread safety
The SimCList library is thread safe, meaning that many threads can run SimCList operators on different lists concurrently without hurt, or also read operations on the same list.
However, of course, no safety guarantee is made for performing concurrently write+write or read+write operations on the same list (eg: insertion, deletion, sorting, ...). For performance and portability reasons, protecting such operations from concurrency is left to the library adopter.
Performance
SimCList has been designed with ease to use and performance in mind. There is some example factors that have been taken into account, and against which the code has been optimized when implementing SimCList:
- overhead of function calls
- cache locality
- number of branches, possible CPU stalls or pipeline flushes
- dynamic memory allocation weight on the OS
- other mathematic/probabilistic optimizations for avoiding worst-case or improving average case behaviours in algorithms
Many parts of SimCLists code have been deeply improved with profiling analysis.
Enhancements:
- Transparent inclusion in C++ applications is natively supported.
- Sentinels are used to improve performance on list traversals.
- A problem was fixed with list_insert_at, which could output inconsistent lists when inserting into even-sized lists in position 0.