Free geometry software for windows

Firefox extension that adds a button to the Firefox status bar that will resize the Firefox window to your specifications Custom Geometry adds a button to the Firefox status bar that will resize the Firefox window to your specifications. Many other extensions will resize the window, but only to preset dimensions, such as 1024x768 or 800x600. Custom Geometry will set the window to an arbitrary size.
I needed this functionality because I prefer my browser window to be in a particular location and size on my screen. Since Im using Microsoft Windows XP, the prospect of the browser window staying where I want it is dim. A video game, misclick, or even just a popup window (usatoday.com anyone?) will resize the window. Now, with just a single click gets it back into place.
Instructions
- Open the CustomGeometry-1.0.0.xpi file in Firefox 2.0.
- Choose to install the extension.
- Restart Firefox when instructed to do so.
- Open the addons window by clicking "Tools," then "Add-ons."
- Select "Custom Geometry" from the list.
- Click the "Options" button.
- Set the window geometry options that you prefer.
- Hit "OK" to save your preferences.
- Click the new icon on the lower right right side of the status bar to apply these settings at any time.
System requirements:
- Firefox 2.0 - 2.0.0.*

GeoGebra 3 is developed as a useful and realistic mathematics all-in-one software which is useful for secondary education, integrating geometry, algebra and calculus. On the one hand, GeoGebra is a dynamic geometry system. You can do constructions with points, vectors, segments, lines, conic sections as well as functions and change them dynamically afterwards. On the other hand, equations and coordinates can be entered directly. Thus, GeoGebra has the ability to deal with variables for numbers, vectors and points, finds derivatives and integrals of functions and offers commands like Root or Extremum.

Gabedit is a Graphical User Interface to Gaussian, Molcas, Molpro and MPQC computational chemistry packages.
Gabedit includes graphical facilities for generating keywords and options, molecule specifications and ther input sections for even the most advanced calculation types. Gabedit includes an advanced Molecule Builder. You can use it to rapidly sketch in molecules and examine them in three dimensions. You can build molecules by atom, ring, group, amino acid and nucleoside. You can also read geometry from a file. Most major molecular file formats are supported.
Gabedit is a software that allows you to learn and know chemistry specification.
Gabedit includes a Gaussian, Molcas, Molpro and MPQC Calculation Setup window which allows you to set up
Gaussian, Molcas, Molpro and MPQC jobs in a simple and straightforward manner. Gabedit includes a text editor for editing Gaussian, Molcas, Molpro and MPQC input files.
Gabedit can graphically display a variety of Gaussian, Molcas, Molpro, MPQC and (partially) ADF calculation results.
Main features:
- Molecular orbitals.
- Surfaces from the electron density, electrostatic potential, NMR shielding density, and other properties.
- Surfaces may be displayed in solid, translucent and wire mesh modes.
- Surfaces can be colored by a separate property.
- Contours (colorcoded).
- Planes (colorcoded).
- Dipole
- XYZ axes and the principal axes of the molecule.
- Animation of the normal modes corresponding to vibrational frequencies.
- Animation of the rotation of geometry, surface, dipole, xyz and the principal axes of the molecule.
- Animation of contours.
- Animation of colorcoded planes.
Gabedit can display IR and Raman computed spectra.
Gabedit can generate a povray file for geometry (atoms + bonds, including hydrogens bond), surfaces (including colorcoded surfaces), contours, colorcoded planes.
Gabedit can save picture in PPM, BMP , JPEG, PNG and PS format.
Gabedit can generate automatically a series of pictures for animation

Genius Maker Free Edition 3.0 is an all-in-one program which helps high school students improve their skills in Mathematics, Physics, and Chemistry. It contains 34 educational software programs. It includes Graph plotter, Analytical geometry, Matrix algebra, Equation solver, Triangle solver, Unit converter, Refraction of rays, Lens and mirrors, Color theory, Transverse waves, Radioactive decay, Periodic table, Inorganic compounds, functional groups and Gas Laws.

Enhancements: Includes Inorganic compounds and Functional groups modules.