Open Source Scientific/Engineering Software

Sweet Home 3D is an interior design application that helps you to quickly draw the floor plan of your house, arrange furniture on it, and visit the results in 3D.

LibreCAD is an open-source cross-platform 2D CAD program, which is translated in over 30 languages. LibreCAD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. License: https://www.gnu.org/licenses/gpl-2.0.html Source: https://github.com/LibreCAD/LibreCAD/releases Track the latest development: https://github.com/LibreCAD/LibreCAD/milestones https://github.com/LibreCAD/LibreCAD/commits/master Create bug reports and feature requests: https://github.com/LibreCAD/LibreCAD/issues Get help: - https://forum.librecad.org - https://dokuwiki.librecad.org - https://librecad.readthedocs.io/

An educational tool for designing and simulating digital logic circuits, featuring a simple-to-learn interface, hierarchical circuits, wire bundles, and a large component library. As a Java application, it can run on many platforms.

gretl is a cross-platform software package for econometric analysis, written in the C programming language.

Over 1,000,000 page views per month. Jmol/JSmol is a molecular viewer for 3D chemical structures that runs in four independent modes: an HTML5-only web application utilizing jQuery, a Java applet, a stand-alone Java program (Jmol.jar), and a "headless" server-side component (JmolData.jar). Jmol can read many file types, including PDB, CIF, SDF, MOL, PyMOL PSE files, and Spartan files, as well as output from Gaussian, GAMESS, MOPAC, VASP, CRYSTAL, CASTEP, QuantumEspresso, VMD, and many other quantum chemistry programs. Files can be transferred directly from several databases, including RCSB, EDS, NCI, PubChem, and MaterialsProject. Multiple files can be loaded and compared. A rich scripting language and a well-developed web API allow easy customization of the user interface. Features include interactive animation and linear morphing. Jmol interfaces well with JSpecView for spectroscopy, JSME for 2D->3D conversion, POV-Ray for images, and CAD programs for 3D printing (VRML export).

OpenEMR is an open source medical practice management application (EHR EMR PMS) featuring fully integrated electronic health records, scheduling, electronic billing, internationalization, free support, a vibrant community, and a whole lot more.

wxMaxima is a cross-platform graphical front-end for the computer algebra system Maxima based on wxWidgets. It provides nice display of mathematical output and easy access to Maxima functions through menus and dialogs. This project has moved to github and can be reached at http://wxmaxima-developers.github.io/wxmaxima/

Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.

OSGeoLive is a self-contained bootable DVD, USB thumb drive or Virtual Machine based on Lubuntu that allows you to try a wide variety of open source geospatial software without installing anything. It is composed entirely of free software, allowing it to be freely distributed, duplicated and passed around. It provides pre-configured applications for a range of geospatial use cases, including storage, publishing, viewing, analysis and manipulation of data. It also contains sample datasets and documentation.

Graph is a program used for drawing graphs of mathematical functions. It is easy to use while having a lot of features and settings. Official web site is located at http://www.padowan.dk

ChronosXP is a planetary hours astrology program for Windows. It runs from the system tray where it displays a glyph corresponding to the current planetary hour. Planetary hours/days can also be viewed for any given time or location.

NAVeGIS is a WinCE/Windows Mobile navigation application.

OpenGTS (Open Source GPS Tracking System) is a full featured web-based GPS tracking system for your fleet of vehicles. It supports OpenLayers and other map providers, detail/summary Reporting, and various GPS tracking devices.

Mouse replacement software that moves the pointer as you move your head. It works on standard PCs equipped with a web camera. No additional hardware is required. Based on the award winning Facial Mouse software. For Linux and Windows systems.

The NumericalChameleon is a free, open source, cross platform software in order to convert units. It converts numbers with a precision of up to 1000 significant figures. It supports more than 6000 units in 94 categories. It has been localized in 10 languages.

A PHP and JavaScript Web mapping framework and demo application for MapServer (see http://mapserver.gis.umn.edu) based on MapScript/PHP.

GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching geometry, algebra, statistics, and calculus. Download the free software at http://www.geogebra.org. Find the source code at http://www.geogebra.org/trac

Android application that displays list of halachic/halakhic times for Jewish prayers (zmanim and zmanei tefillot).

Modular, touch screen friendly navigation system with GPS tracking, realtime routing engine and support for various vector map formats. Works on a wide range of devices, from computers to smartphones.

Java version of Stellarium.

OCR c++ library. Include: contour recognition; vectorisation; matrix letter feature recognition; auto page segmentation and detect rotation; SS3 ASM core; XML base; web-based GUI; 99,6% printed Unicode text recognition; letter base up to 1200 letters.

ZanyBlue: Ada libraries towards a finite element framework

GOK is an on-screen keyboard. An alternative to the mouse/keyboard input system (for unix-like systems with GNOME libraries.)

medSLT - The Medical Speech Translator