Free previewing software for linux

Preview is a simple image viewer for GNUstep. It is designed to be easy to use and support GNUstep features such as image design, pasteboard/services, printing, and layout.

The purpose of the preview-latex package is to embed LaTeX environments such as display math or figures into Emacs source buffers. By mouse clicking, you can open the original text.

After editing, another click will just run the region in question through LaTeX and redisplay the new results. It requires version 21.1 or higher of Emacs or XEmacs and AUCTeX.

WYSIWYG (what you see is what you get) sometimes is considered all the rage, sometimes frowned upon. Do we really want it? Wrong question. The right question is what we want from it. Except when finetuning the layout, we dont want to use printer fonts for on-screen text editing.

The low resolution and contrast of a computer screen render all but the coarsest printer fonts (those for low-quality newsprint) unappealing, and the margins and pagination of the print are not wanted on the screen, either.

On the other hand, more complex visual compositions like math formulas and tables cant easily be taken in when seen only in the source. preview-latex strikes a balance: it only uses graphic renditions of the output for certain, configurable constructs, does this only when told, and then right in the source code.

Switching back and forth between the source and preview is easy and natural and can be done for each image independently. Behind the scenes of preview-latex, a sophisticated framework of other programs like `dvipng, Dvips and GhostScript are employed together with a special LaTeX style file for extracting the material of interest in the background and providing fast interactive response.

Truevision is a 3D modeler for Gnome and Povray.
Truevision is a 3D modeler for Gnome. It is still in developpement, so be carefull and save often.
Main features:
- create some objects :
- finite solid primitives : blob, box, sphere, cone, cylinder, torus, heightfield, superellipsoid, lathe, sphere
- finite patch primitive : disc
- infinite solid primitive : plane
- lights : point, cylindrical, spot, area, light groups
- csg operators : union, merge, intersection, difference
- athmospherics : background, skysphere, media, fog
- manipulate them ( rotate, scale, translate ... )
- manipulate and edit the camera.
- render the scene with the multithreaded povray frontend.
- create and edit materials , with preview in editor.
- output the scene to povray .
- save and load scenes, objects, and materials.
- save materials with preview in material library.

Pyastra is a python to assembler translator. The project takes source file written in python and, if the code contains no errors, generates an assembler file.
Then you may comile it to hex-file using your favourite PIC assembler (gpasm, mpasm, or any other compatible with them).
Goals:
- to bring a python translator to the world of microcontrollers
- to support a wide range of microcontrollers and processors
- to generate compact and effective code
- to be developer- and user-friendly

PornView project is an image and movie manager and viewer with thumbnail previews.
Additional features includes thumbnail caching, directory tree views, adjustable zoom, and fullscreen view.
Slideshows allow for unattended presentation of images for hands-free viewing. Pornview is written using GTK+.
Main features:
- Browse your hard disk showing you thumbnails of image files.
- Slide Show.
- View EXIF data attached to JPEG images.
- View in fullscreen mode.
- Zoom in, out, and fit to window.
- Copy, move, delete images and folders.
- Rename images in series.
- Support movies.
- Add comments to images.
- Can open a file in an external program (customizable).
- File filtering options.

Erwin projetc is a really simple html editor.
Main features:
- really really simple text editor
- preview rendered html page
- support for html tags
- intelligent tag closer
- dragndrop support
- source highlighting
Enhancements:
- implemented a searchbar like firefox has
- and probably some other changes
- bumped version to 0.8
- released as 0.8 the "Like a fox" release