Free periodic table viewer software for linux

Kbview - also known as the K Executable viewer - is a program that is designed to allow you to browse most executable formats. At present only ELF is supported.

This program is presently in pre-alpha state. While I have a general idea of how I want the development to proceed, and I am taking steps towards this goal (the release that is on this page is not the bleeding edge code), it is not there yet. I have released this code only as a proof of concept, and in the hope that anyone that finds it useful will contribute to it.

In short, not everything is implemented, and not everything that is implemented works. Also, not everything that is implemented is in its final state, even if it does work.

At present you can: Open executable files, get a list of the sections, view the string, symbol, and note tables (though note support is presently half-assed), and partial support for demangling the symbols is also provided.

Gerber Viewer in short gerbv is a viewer for Gerber files. Gerber files are generated from PCB CAD system and sent to PCB manufacturers as basis for the manufacturing process. The standard supported by gerbv is RS-274X.

The basic difference between RS-274D (the old standard) and RS-274X is basically the addition of apertures in RS-274X. It might be possible to make an RS-274X file out of an RS-274D file and an aperture list.

gerbv also supports drill files. The format supported are known under names as NC-drill or Excellon. The format is a bit undefined and different EDA-vendors implement it different. But basically you need to have the tools definition in the file, then the parser is quite tolerant. The different holes are shown as dots in the (scaled) correct size.

The different layers of the PCB are separated into different files. gerbv can load all files at the same time and display them "on top of each other". You can independently turn them on and off.

Opcion Font Viewer is a free font viewer written in Java that allows you to view both installed and uninstalled TrueType fonts on Windows, Linux, Unix or Mac.
The main focus of Opcion is to allow you to view your uninstalled fonts so that you install only the fonts you want and keep your system memory free of fonts you dont want.
As you may have experienced, installing the brand new 1000 fonts font pack you just bought on your Windows, Linux, Unix or Mac computer can lead to slow-downs when starting the computer and when loading other programs.
The slow down occurs because the Operating System and certain programs (e.g. word-processors, email clients, graphics editors) need to load all system fonts so that they can be made available to you at any time. This is where Opcion comes in.
Opcion was written to handle the viewing of large font collections, therefore only fonts that you are currently viewing are stored in memory. Although the amount of physical memory you have will effect how many fonts you can view at a time, it will no longer be a limitation to you making use of your entire font library.
Another problem with most Operating Systems default font viewers is that while they are capable of viewing fonts, the default Windows/Linux/Unix font viewers only allows you to view fonts that are already installed and one at a time. Opcion allows you to view TrueType fonts located anywhere and allows you to view system fonts as well.
To help you pick the best font for the job, whether it be for your assignment, project logo or webpage, Opcion provides a list view of either system or other/uninstalled fonts so you may see how a font looks compared to other fonts in your collection.
When you see a font that you feel suits your current job you can simply click on it in the list view and it will be added to a favourites list that can then be saved for future reference or used to install only the fonts you want.
For viewing fonts, seeing how they would appear applied to your name/logo/tagline, and keeping track of which fonts best suit the job is the purpose of Opcion Font Viewer. Opcion allows you to view both installed and uninstalled fonts in different views depending on your needs. Written in Java, Opcion will work on all platforms that the Java Runtime Environment supports (which includes Windows, Mac, Solaris & Linux).
Opcion Font Viewer provdies a default view that allows you to view one font at a time, and a list view which allows you to view multiple fonts at a time. By clicking on fonts you like in the list view you are adding fonts to a faviourties list that Opcion keeps for you. The faviourites list can then be saved for future reference or used in finding out the file names of fonts you wish to install.
Main features:
- Viewing of installed/uninstalled fonts.
- List view of installed/uninstalled fonts.
- Adding/removing of favourite fonts.
- Saving of favourite fonts.
- Customizable sample/display text.
- Customizable font size.
- Customizable font properties (bold, italic, etc.) in sample text area.
- Changeable fonts displayed per page in List View.
Execute Opcion Font Viewer
To execute Opcion Font Viewer in Windows, download the EXE version. For Linux users use the command "java -jar Opcion_v1.1.1.jar" in console/terminal/shortcut.
Exception in thread "main" java.lang.UnsatisfiedLinkError: /usr/java/j2re1.4.1_02/lib/i386/libfontmanager.so: libstdc++-libc6.1-1.so.2: cannot open shared object file: No such file or directory
This error occurs due to backwards compatibility issues with the Java Runtime and libstdc. To fix this problem for RedHat 9.0 install the RPM file compat-libstdc++-7.3.2.96.118.i386.rpm, which can be found on disc 1 of the downloadable distro. For other Linux distributions check rpmfind.net for libstdc++-libc6.1-1.so.2 to see what package you need to install.
An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0x4CAEE920 Function=(null)+0x4CAEE920 Library=/usr/local/lib/SunJava2-1.4.2/lib/i386/libfontmanager.so
This error appears to be a problem with Sun Microsystems Java implementation for Linux, the real cause for this crash is still being investigated. There are no solutions to this problem yet.
Opcion crashes during execution when using Blackdown Java Virtual Machine.
Opcion Font Viewer was programmed for Sun Microsystems JVM, and it uses Suns Java API extensively. Thus, it is highly recommended that you use the latest Java Runtime Environment instead of other JVMs.
Enhancements:
- Added sorting to other fonts list.

Ekspos is platform independent Java image viewer program. Ekspos Image Viewer support most popular image format: PNG, JPEG, and GIF, where additional image format can be added through Java ImageIO plugin.
It consists of 2 parts: shell browser and viewer. Shell browser allows you to navigate your image collection and youll be able to browse images in tree, detail, list, icon and thumbnail view. The viewer provide progressive view of images with zoom and pan capability.
Main features:
- Image Format (Default): JPEG, PNG, and GIF
- Support ImageIO plugin for additional Image Format
- Support 4 views: detail, list, icon, and thumbnail
- Thumbnail caching for fast preview
- Written entirely in Java

frob 3D viewer project is a 3D object point/wireframe/polygon viewer - called frob3dv for lack of a better name.

I wrote this version mainly to learn c++. Also it was the first program I wrote after I got a PC (and put linux on it), but it has a long history. Many years ago I wrote a few stacks in Hypercard (on a Mac SE) for editing and displaying 3d shapes. I then ported it to modula-2 , using the free MacMETH compiler, then MOPS, a great free object-oriented programming language and application framework for the mac.

That is where it got most of its current class hierarchy. At that stage it was still only a wire-frame viewer. I then ported it to c++ for the macintosh using the Macintosh Programmers Workshop. When I wiped Windoze off my PC and put an operating system (linux) on it, I ported it to X and added the polygon drawing.

Teriodic project is a training tool for the periodic table of the elements.

Starting from 1 (hydrogen), it quizzes the abreviations of each element in numerical order.

If you make a mistake, it shows you the next five elements and lets you start again from hydrogen.

Knowing the periodic table makes it possible to estimate what chemicals look like and how they react.

Generic Hash Table library is a hash table implementation in C for storing arbitrary types of data. Generic Hash Table library is meant to be small, easily extensible (in terms of hash functions etc), and easy to understand codewise.
Enhancements:
- config.guess and config.sub were updated to work with current systems.
- The API was extended with two new functions to allow returning the keysize on iteration.