FreeCAD is an open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters. It is designed to fit a wide range of uses including product design, mechanical engineering, architecture and 3D printing.FreeCAD allows you to sketch geometry constrained 2D shapes and use them as a base to build other objects. It contains many components to adjust dimensions or extract design details from 3D models to create high quality production-ready drawings. it is a multiplatfom (Windows, Mac and Linux), highly customizable using the Python language. It reads and writes to many open file formats such as STEP, IGES, STL, SVG, DXF, OBJ, IFC, DAE and many others, making it possible to seamlessly integrate it into your workflow.FreeCAD includes a modern Finite Element Analysis (FEA) tools, experimental CFD, BIM, Geodata workbenches, a Path (CNC) workbench, a robot simulation module that allows you to study robot movements and many more, and a rich collection of plugins and macros installable directly from within the application.

FreeCAD

KiCad is a free and open-source electronics design automation (EDA) suite. It features schematic capture, integrated circuit simulation, printed circuit board (PCB) layout, 3D rendering, and plotting/data export to numerous formats. KiCad also includes a high-quality component library featuring thousands of symbols, footprints, and 3D models. KiCad has minimal system requirements and runs on Linux, Windows, and macOS.

KiCad

An EDA suite for schematic and circuit board design

Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets and nebulae, and has many other features including multiple panoramic landscapes, fog, light pollution simulation and a built-in scripting engine.Stellarium comes with a star catalogue of about 600 thousand stars and it is possible to download extra catalogues with up to 210 million stars.Stellarium has multiple sky cultures - see the constellations from the traditions of Polynesian, Inuit, Navajo, Korean, Lakota, Egyptian and Chinese astronomers, as well as the traditional Western constellations.It is also possible to visit other planets in the solar system - see what the sky looked like to the Apollo astronauts, or what the rings of Saturn looks like from Titan.

Stellarium

QGIS is a user friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX, Windows and Android and supports numerous vector, raster, and database formats and functionalities.

QGIS Desktop

A Free and Open Source Geographic Information System

JupyterLab Desktop is the cross-platform desktop application for JupyterLab. It is the quickest and easiest way to get started with Jupyter notebooks on your personal computer, with the flexibility for advanced use cases.

JupyterLab Desktop

JupyterLab desktop application, based on Electron.

GNU Octave is a high-level interpreted language, primarily intended for numerical computations. It provides capabilities for the numerical solution of linear and nonlinear problems, and for performing other numerical experiments. It also provides extensive graphics capabilities for data visualization and manipulation. Octave is normally used through its interactive command line interface, but it can also be used to write non-interactive programs. The Octave language is quite similar to Matlab so that most programs are easily portable.Octave has extensive tools for solving common numerical linear algebra problems, finding the roots of nonlinear equations, integrating ordinary functions, manipulating polynomials, and integrating ordinary differential and differential-algebraic equations. It is easily extensible and customizable via user-defined functions written in Octave's own language, or using dynamically loaded modules written in C++, C, Fortran, or other languages.

GNU Octave

Interactive programming environment for numerical computations

Plots makes it easy to visualise mathematical formulae. In addition to basic arithmetic operations, it supports trigonometric, hyperbolic, exponential and logarithmic functions, as well as arbitrary sums and products. It can display polar equations, and both implicit and explicit Cartesian equations.Plots is designed to integrate well with the GNOME desktop and takes advantage of modern hardware using OpenGL.גרפים תוכנן לשילוב מיטבי עם שולחן העבודה GNOME ומנצל חָמְרה מודרנית באמצעות OpenGL.

Plots

KStars is freely licensed, open source, cross-platform Astronomy Software by KDE.It provides an accurate graphical simulation of the night sky, from any location on Earth, at any date and time. The display includes up to 100 million stars, 13,000 deep-sky objects,all 8 planets, the Sun and Moon, and thousands of comets, asteroids, supernovae, and satellites.For students and teachers, it supports adjustable simulation speeds in order to view phenomena that happen over long timescales, the KStars Astrocalculator to predict conjunctions, and many common astronomical calculations.For the amateur astronomer, it provides an observation planner, a sky calendar tool, and an FOV editor to calculate field of view of equipment and display them. Find out interesting objects in the "What's up Tonight" tool, plot altitude vs. time graphs for any object, print high-quality sky charts, and gain access to lots of information and resources to help you explore the universe!Included with KStars is Ekos astrophotography suite, a complete astrophotography solution that can control all INDI devices including numerous telescopes, CCDs, DSLRs, focusers, filters, and a lot more. Ekos supports highly accurate tracking using online and offline astrometry solver, autofocus and autoguiding capabilities, and capture of single or multiple images using the powerful built in sequence manager.Astronomical Catalogs:Default catalog consisting of stars to magnitude 8Extra catalogs consisting of 100 million stars to magnitude 16Downloadable catalogs including Messier Images, Abell Planetary Nebulae, Sharpless Catalog, Lynds Dark Nebula CatalogCorrections for precession, nutation and atmospheric refractionTools for retrieval of data from online databases

KStars

A program for comparing multiple versions of an image or video.

Identity

jamovi is an advanced, real-time, statisticial spreadsheet, providing a suite of common statistical methods such as descriptives, t-tests, ANOVAs, correlation matrices, proportion tests, contingency tables, and factor analysis.Additional analyses are available from the jamovi library.

jamovi

Current weather, with information about temperature, pressure, wind speed and wind direction, sunrise and sunset. Know meteorologic predictions to next hours and days. Show awesome maps with all the information. Switch between some maps distributors. Now with System Tray Indicator, showing your location and forecast.Other features:Forecast for next 18 hoursForecast for next five daysChoose your units from metric, imperial or british systemsChoose your city with popup mapsWatch awesome maps with weather information

Meteo

Know the forecast of the next hours and days with data and maps

Manage your bibliographies using the BibTeX format.

Citations

Scilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications. Scilab includes hundreds of mathematical functions. It has a high level programming language allowing access to advanced data structures, 2-D and 3-D graphical functions. A large number of functionalities is included in Scilab:Maths &amp; Simulation: For usual engineering and science applications2-D &amp; 3-D Visualization: Graphics functions to visualize, annotate and export dataOptimization: Algorithms to solve constrained and unconstrained continuous and discrete problemsStatistics: Tools to perform data analysis and modelingControl System Design &amp; Analysis: Standard algorithms and tools for control system studySignal Processing: Visualize, analyze and filter signals in time and frequency domainsApplication Development: Increase Scilab native functionalities and manage data exchangesXcos - Hybrid dynamic systems modeler and simulator: Modeling physical systems, control systemsThanks to its ability to interconnect with third-party technologies and applications, Scilab can also act as a unique platform to bring together codes written in different programming languages in a single, unified language, thus facilitating their distribution, their back-up and use.

Scilab

Scientific software package for numerical computations

Mandelbulber2 creatively generates three-dimensional fractals. Explore trigonometric, hyper-complex, Mandelbox, IFS, and many other 3D fractals. Render with a great palette of customizable materials to create stunning images and videos.Features:

Mandelbulber2

Free and open source 3D fractals generator

Kalzium is a program that shows you the Periodic Table of Elements. You can use Kalzium to search for information about the elements or to learn facts about the periodic table. It provides an overview of the important data (like melting points, electron affinity, electron negativity, electron configuration, radii, mass, ionisation energy), an isotope table, and different colored views of the periodic table (separation of the different blocks, year simulator, temperature simulator). It contains tools to visualize the spectral lines of each element, a molecular weight calculator, a 3D molecule editor, and an equation solver for stoichiometric problems.

Kalzium

BOINC lets you help cutting-edge science research using your computer. The BOINC app, running on your computer, downloads scientific computing jobs and runs them invisibly in the background. It's easy and safe.About 30 science projects use BOINC. They investigate diseases, study climate change, discover pulsars, and do many other types of scientific research.The BOINC and Science United projects are located at the University of California, Berkeley and are supported by the National Science Foundation.

BOINC Manager

Contribute computing power to projects doing research in many scientific areas

Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface.

Qalculate! (GTK UI)

Marble is a virtual globe and world atlas — your swiss army knife for maps that you can use to learn more about the Earth and other planets.Explore the neighborhood with Marble's rich set of city and street level maps. Search for addresses and places of interest. Marble takes care of querying various search backends and presents their results in a unified view. Calculate pedestrian, bike and motorcar routes with ease — online and offline, with an arbitrary number of via points.Start exploring the world. View clouds and sun shadow, follow satellites and space stations and display their orbits, all updated in real-time. Travel back in time and learn about historic views of our planet using maps from past centuries. Earth is not enough? Marble also offers maps of the moon and other planets.

Marble

Gnumeric is a spreadsheet application for interactive manipulation of data.Gnumeric aims to provide high-accuracy computations, expressive graphs, and a wide selection of statistical analysis tools. Gnumeric can share files with Microsoft Excel and programs supporting the ODS standard.

The Gnumeric Spreadsheet

Pure Maps is an application to display vector and raster maps, places, routes, and provide navigation instructions with a flexible selection of data and service providers.Depending on the used service provider, Pure Maps can rely fully either on online services or, together with OSM Scout Server, provide fully offline maps

Pure Maps

Qalculate! (Qt UI)

GNU PSPP is a program for the statistical analysis of sampled data. It is a Free replacement for the proprietary program SPSS, and appears very similar to it with a few exceptions. The most important of these exceptions are, that there are no “time bombs”; your copy of PSPP will not “expire” or deliberately stop working in the future. Neither are there any artificial limits on the number of cases or variables which you can use. There are no additional packages to purchase in order to get “advanced” functions; all functionality that PSPP currently supports is in the core package.PSPP is a stable and reliable application. It can perform descriptive statistics, T-tests, anova, linear and logistic regression, measures of association, cluster analysis, reliability and factor analysis, non-parametric tests and more. Its backend is designed to perform its analyses as fast as possible, regardless of the size of the input data. You can use PSPP with its graphical interface or the more traditional syntax commands.A brief list of some of PSPP's features.Support for over 1 billion casesSupport for over 1 billion variablesSyntax and data files which are compatible with those of SPSSA choice of terminal or graphical user interfaceA choice of text, postscript, pdf, opendocument, html or TeX output formatsInter-operability with: LibreOffice, Apache OpenOffice, Gnumeric and other free softwareEasy data import from spreadsheets, text files and database sourcesThe capability to open, analyse and edit two or more datasets concurrentlyA user interface supporting all common character setsThe user interface has been translated to multiple languagesVery fast statistical procedures, even on very large data setsNo license fees and no expiration periodNo unethical “end user license agreements”A fully indexed user manualFreedom ensured; It is licensed under the GPLv3 or laterPortability; Runs on many different computers and many different operating systemsPSPP is particularly aimed at statisticians, social scientists and students requiring fast convenient analysis of sampled data.

GNU PSPP

GNU PSPP is a program for statistical analysis of sampled data

Gaia Sky is a real-time, 3D, astronomy visualisation software for desktop and VR that runs on Linux, Windows and macOS. It is developed in the framework of ESA's Gaia mission to chart about 1 billion stars of our Galaxy in the Gaia group of the Astronomisches Rechen-Institut (ZAH, Universität Heidelberg). Explore the Solar System, the Milky Way or even the most distant galaxies of the Universe.

Gaia Sky

Open Source 3D universe simulator for desktop and VR with support for more than a billion objects

Graphs is a simple, yet powerful tool that allows you to plot and manipulate your data with ease. You can import data from two-column files or generate it via an equation. All data can be manipulated using a variety of operations such as the ability to select, cut, translate, multiply, center and smooth data, as well as apply any custom transformations using numpy notation.Graphs lets you customize the style of plotted data. You can add and edit stylesheets in detail.Graphs is an excellent fit for both plotting and data manipulation. The plots created with Graphs can be saved in a variety of formats suitable for sharing and presenting to a wide audience, such as in a scientific publication or presentations. It is also possible to save the plots as vector images, which can be easily edited in programs like Inkscape for further customization and refinement. Graphs is written with the GNOME environment in mind, but should be suitable for any other desktop environment as well.For any feedback, questions or general issues, please file an issue on the GitHub page.

Graphs

FlashPrint is a beginner-friendly slicer developped in-house by Flashforge for use with its line of 3D printers, featuring a 3D viewer, scaling and cutting abilities, and multiple printer related configuration options. It also sports an expert mode for more experienced users.NOTE: This wrapper is not verified by, affiliated with, or supported by FlashForge.

FlashPrint

Gpredict is a real time satellite tracking and orbit prediction program written using the Gtk+ widgets.Gpredict is targeted mainly towards ham radio operators but others interested in satellite tracking may find it useful as well.

Gpredict

Real-time satellite tracking and orbit prediction program

QElectroTech is a Qt5 application to design electric diagrams. It uses XML files for elements and diagrams, and includes both a diagram editor, an element editor, and a titleblock editor.

QElectroTech

Genius is a general purpose calculator program similar in some aspects to BC, Matlab, Maple or Mathematica. It is useful both as a simple calculator and as a research or educational tool. The syntax is very intuitive and is designed to mimic how mathematics is usually written. GEL is the name of its extension language, it stands for Genius Extension Language, clever isn't it? In fact, many of the standard genius functions are written in GEL itself.What can it do?Arbitrary precision integers, multiple precision floats.Complex numbers, stored in Cartesian coordinates as usual.Math-like-looking expressions, tries to be as much a what-you-mean-is-what-Genius-understands, up to a limit of course.Matrix calculations / Linear Algebra, with many related functions.Number theory.Calculus, numerical and even very limited symbolic calculations.Statistics, all the basic statistical functions.Numerical equation solving, polynomial roots, etc...Combinatorics.Most common elementary / trigonometric functions.Modular arithmetic, including inversions and modular arithmetic on matrices.A complete programming language, with automatic typing. In fact large part of Genius standard library is written in GEL.2D Function line plots, standard 2D graphs of up to 10 functions at once, with possibility to export to EPS or PNG.Parametric plots, with possibility to export to EPS or PNG.3D Function surface plots, with possibility to export to EPS or PNGSlopefield/Vectorfield plotting.GUI IDE where you can edit and run/test your programs.Can output matrices in LaTeX, Troff (eqn) or MathML, this is I think a very cool feature that allows you to copy stuff directly from Genius to a document in LaTeX, troff or MathML.

Genius

Genius is a general purpose calculator program

Siril is an image processing tool specially tailored for noise reduction and improving the signal/noise ratio of an image from multiple captures, as required in astronomy.Siril can align automatically or manually, stack and enhance pictures from various file formats, even images sequences (movies and SER files).

Siril

Astronomical image (pre-)processing program

LabPlot is a FREE, open source and cross-platform Data Visualization and Analysis software accessible to everyone.LabPlot provides an easy way to create, manage and edit plots. It allows you to produce plots based on data from a spreadsheet or on data imported from external files. Plots can be exported to several pixmap and vector graphic formats.

LabPlot

Interactive Data Visualization and Analysis

科学