| 1 |  AnkiPowerful and intelligent flash cards. | 26.09.3 | Open source | September 25, 2026 | — | 146K ↓ |
| 2 |  StellariumA free open source planetarium for your computer. | 26.3 | Open source | September 28, 2026 | — | 118K ↓ |
| 3 |  KiCadA Cross Platform and Open Source Electronics Design Automation Suite | 10.0.6 | Open source | August 30, 2026 | — | 126.7K ↓ |
| 4 |  PraatPraat is a free, open-source program for speech analysis in phonetics. | 7.0.02 | Open source | September 30, 2026 | — | 65.5K ↓ |
| 5 |  QGIS (LTR)A Free and Open Source Geographic Information System (GIS) | 3.44.14 | Open source | September 29, 2026 | — | 473K ↓ |
| 6 |  QuartoQuarto® is an open-source scientific and technical publishing system built on Pandoc | 1.10.19 | Open source | October 6, 2026 | — | 46K ↓ |
| 7 |  OpenBoardInteractive whiteboard for schools and universities | 1.7.7.240 | Open source | March 30, 2026 | — | 37K ↓ |
| 8 |  Qalculate!A highly versatile desktop calculator, with support for units, physical constants, uncertainty propagation, symbolic calculations, etc. | 5.13.2 | Open source | October 11, 2026 | — | 50.3K ↓ |
| 9 |  JASPA Fresh Way to Do Statistics | 0.99.0 | Open source | October 21, 2026 | — | 12.2K ↓ |
| 10 |  OpenChromOpen Source software for chromatography, spectrometry and spectroscopy | 1.6.38 | Open source | October 23, 2026 | — | 24.6K ↓ |
| 11 | TTux PaintTux Paint is a free, award-winning drawing program for children ages 3 to 12. It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program. | 0.9.35 | Open source | June 9, 2025 | 50.1 MB | 143.4K ↓ |
| 12 |  Klayout - Layout Viewer And EditorKLayout is a GDS and OASIS file viewer. | 0.30.12 | Open source | August 26, 2026 | 316.4 MB | 17.7K ↓ |
| 13 |  QGISA Free and Open Source Geographic Information System (GIS) | 4.2.2 | Open source | September 28, 2026 | — | ★ 14.7K |
| 14 | SscilabScilab is free and open source software for numerical computation providing a powerful computing environment for engineering and scientific applications. | 2025.0.0 | Open source | April 30, 2025 | 205.6 MB | 28.6K ↓ |
| 15 |  Google Earth ProThe world's most detailed globe | 7.3.7.1327 | Free | August 20, 2026 | — | 2.5M ↓ |
| 16 |  GeoDaSpatial Data Science | 1.22.1 | Open source | September 23, 2026 | — | 17.7K ↓ |
| 17 |  AvogadroAvogadro is an advanced molecular editor designed for cross-platform use in computational chemistry, molecular modeling, bioinformatics, materials science, and related areas. It offers flexible rendering and a powerful plugin architecture. | 1.2.0 | Open source | November 5, 2021 | 11.3 MB | 5.5K ↓ |
| 18 |  fendArbitrary-precision unit-aware calculator | 1.5.9 | Open source | October 21, 2026 | — | 5.9K ↓ |
| 19 |  gnuplotInteractive function plotting utility | 6.0 patchlevel 4 | Other licence | December 24, 2025 | 33.1 MB | 3.7K ↓ |
| 20 |  pyzoThe Interactive editor for scientific Python | 4.22.0 | Open source | August 5, 2026 | — | 6.9K ↓ |
| 21 |  eXeLearningeXeLearning is a free authoring tool to create educational resources. | 4.0.5 | Open source | September 16, 2026 | — | 750 ↓ |
| 22 |  nteractnteract is an open-source organization committed to creating fantastic interactive computing experiences that allow people to collaborate with ease. | 0.28.0 | Open source | September 7, 2021 | — | 18K ↓ |
| 23 |  RtoolsRtools is a toolchain bundle used for building R packages from source (those that need compilation of C/C++ or Fortran code) and for building R itself. | 4.5.6768 | Open source | February 7, 2026 | 561.6 MB | 581.1K ↓ |
| 24 |  GeoServerGeoServer is an open source software server written in Java that allows users to share and edit geospatial data. | 3.0.2 | Open source | October 16, 2026 | 126.7 MB | 5.4K ↓ |
| 25 |  SpeedCrunchA high-precision scientific calculator featuring a fast, keyboard-driven user interface. | 1.1 | Open source | October 23, 2026 | — | 25.1K ↓ |
| 26 |  GeoGebra ClassicApps bundle including free tools for geometry, spreadsheet, probability, and CAS | 6.0.933 | Proprietary | October 19, 2026 | — | 355.3K ↓ |
| 27 |  Nelsonmulti-paradigm programming language and numeric computing environment. | 1.16.0.5575 | Open source | December 30, 2025 | — | 2.9K ↓ |
| 28 |  OpenOrienteering MapperA free software for drawing orienteering maps | 0.9.6 | Open source | August 20, 2026 | — | 2.3K ↓ |
| 29 |  insectA high precision scientific calculator with full support for physical units | 5.7.0 | Open source | June 11, 2023 | — | 482 ↓ |
| 30 |  GeoGebra Graphing CalculatorGraph functions, investigate equations, and plot data with our free graphing app | 6.0.933 | Proprietary | October 19, 2026 | — | 146.9K ↓ |
| 31 | Gghidraa software reverse engineering (SRE) framework | 12.2-20261016 | Open source | | — | 241K ↓ |
| 32 |  GeoGebra GeometryConstruct circles, angles, transformations and more with the free geometry tool | 6.0.933 | Proprietary | October 19, 2026 | — | 147.4K ↓ |
| 33 |  HopsanA free multi-domain system simulation tool developed at the division of Fluid and mechatronic systems at Linköping university. | 2.24.4.20260918.1254 | Open source | September 21, 2026 | — | 1K ↓ |
| 34 |  Jamovi DesktopOpen statistical software for the desktop and cloud | 28.14.0.0 | Open source | October 23, 2026 | — | 54.3K ↓ |
| 35 |  MarbleVirtual Globe | 2.2.0 | Open source | March 30, 2021 | 31.9 MB | 2K ↓ |
| 36 |  AAS WorldWide TelescopeTool for showcasing astronomical data and knowledge | 6.1.2 | Open source | August 4, 2022 | 105.3 MB | 945 ↓ |
| 37 |  Garmin ExpressUpdate maps and software, sync with Garmin Connect and register your device. | 7.29.1.0 | Proprietary | July 26, 2026 | — | 67.9K ↓ |
| 38 |  Maxima computer algebra systemA Computer Algebra System | 5.49.0 | Open source | April 10, 2026 | 164.0 MB | 35K ↓ |
| 39 |  CloudCompare3D point cloud and mesh processing software | 2.13.2 (07-06-2024) | Open source | August 9, 2025 | 342.6 MB | 40 ↓ |
| 40 |  G*PowerGPower is a tool to compute statistical power analyses for many different t tests, F tests, χ2 tests, z tests and some exact tests. | 3.1.9.7 | Free | November 13, 2024 | — | 5.3K ↓ |
| 41 |  TomTom MyDrive ConnectManage all your TomTom device updates with MyDrive Connect on a Mac or PC | 5.3.5.5140 | Proprietary | May 7, 2026 | 72.7 MB | 48.8K ↓ |
| 42 |  Garmin BaseCampMake the most of your next outdoor activity, or relive the trips you’ve taken. BaseCamp lets you plan outdoor activities, organize your data and share your adventures with others. | 4.7.5.0 | Proprietary | June 14, 2023 | — | 6.8K ↓ |
| 43 |  JuliaJulia is a high-level, high-performance, dynamic programming language. | 1.23.0.0 | Open source | October 21, 2026 | 320.0 MB | ★ 49.2K |
| 44 |  JuliaJulia is a high-level, high-performance, dynamic programming language. | 1.13.2 | Open source | October 15, 2026 | 170.2 MB | ★ 49.2K |
| 45 |  SirilThe Siril image processing software for amateur astronomy. | 1.2.6 | Open source | April 1, 2025 | 79.6 MB | 1.7K ↓ |
| 46 |  LabPlot2FREE, open source and cross-platform Data Visualization and Analysis software accessible to everyone and trusted by professionals | 2.12.1 | Open source | August 18, 2025 | 96.7 MB | 4.4K ↓ |
| 47 |  gc-menuIt is a typing assistance tool that allows you to have you frequently typed text fragments (e.g. email address, canned responses) available for automatic typing in any Windows application. | 1.3.0.0 | Open source | February 8, 2025 | — | 1K ↓ |
| 48 | Ffree42Free42, an HP-42S Calculator Simulator | 3.4 | Open source | | — | 4.4K ↓ |
| 49 |  ilastikilastik is a simple, user-friendly tool for interactive image classification, segmentation and analysis. | 1.3.0 | Open source | August 7, 2026 | 268.7 MB | 689 ↓ |
| 50 | VveuszScientific plotting and graphing program, designed to produce publication-ready 2D and 3D plots. | 4.2.1 | Open source | | — | 3.9K ↓ |