SkyPulse
Mobile app · Open sourceDecode and monitor 1090 MHz ADS-B aircraft with an RTL-SDR.
Completely freeAndroidDecode and monitor 1090 MHz ADS-B aircraft with an RTL-SDR.
Completely freeAndroidControl an Az/El/polarization radio telescope mount over your local WiFi.
Completely freeAndroidBirding tools and data explorer for your eBird and Macaulay Library exports.
Free, with trade-offsWinMacAndroidiOSSolar is an app to monitor off grid solar setups over bluetooth.
Completely freeAndroidA simple and clean study progress tracker built with Jetpack Compose.
Completely freeAndroidPop-up dictionary for Yomitan dictionaries, from the text menu of any app.
Free, with trade-offsAndroidLearn Japanese from zero in about five minutes a day.
Completely freeAndroidOffline translator based on TranslateGemma.
Completely freeAndroidReference and calculations for thermocouples.
Completely freeAndroidToadua is a dictionary, available on Android.
Completely freeAndroidA simple app that pulls out trivia out of OpenTriviaDB and challenges you.
Free, with trade-offsAndroidAn application to convert units.
Free, with trade-offsAndroidCalculate and convert anything.
Completely freeAndroidDisplays pictures for a set time with optional timer - for drawing practice.
Completely freeAndroidCalculate alcohol mass, content and volume in drinks.
Completely freeAndroidCoil and e-liquid tools.
Completely freeAndroidRead a Quranic ayah before the apps you choose to open.
Completely freeAndroidMonitor pool and hot tub water quality with a BLE-YC01 Bluetooth sensor.
Completely freeAndroidWuxia Learn - Learn Chinese is a flashcard mobile app, available on Android.
Completely freeAndroidPrivate, offline flight logbook with EASA/BCAA paper-logbook PDF export.
Completely freeAndroidLearn Scottish Gaelic through repetition!
Completely freeAndroidRead, listen, choose from 5 reciters, and track your Quran journey.
Completely freeAndroidA dictionary app for Free Dictionary API and Wiktionary API.
Free, with trade-offsAndroidCollect and plot fermentation data from an iSpindel hydrometer.
Completely freeAndroidおやつ Oyatsu is a clock and alarm mobile app, available on Android.
Completely freeAndroidSelect a word in any app: an Anki card with its sentence, picture and sound.
Completely freeAndroidPython/R distribution for data science and machine learning.
Limited free planWinReal-time 3D visualization of space. The free space simulation that lets you explore our universe in three dimensions.
Completely freeWinOpen source software platform for visualizing complex networks and integrating these with any type of attribute data.
Completely freeWinEducational MIPS simulator.
Completely freeWinFreeMat is a free environment for rapid engineering and scientific prototyping and data processing. It is similar to commercial systems such as MATLAB from Mathworks, and IDL from Research Systems, but is Open Source.
Completely freeWinA diverse community uses GMT to process data, generate publication-quality illustrations, automate workflows, and make animations.
Completely freeWinSolve equations, expand and factor expressions, find derivatives and integrals.
Free for non-commercial useWinConstruct circles, angles, transformations and more with the free geometry tool.
Free for non-commercial useWinGraph functions, investigate equations, and plot data with our free graphing app.
Free for non-commercial useWinGoldenDict is a dictionary, available on Windows.
Completely freeWinOpen source graph visualization software.
Completely freeWinGridcoin is an open source cryptocurrency that rewards volunteer computing for science through the BOINC platform.
Completely freeWinAn offline desktop editor for Typst, aimed at maths and physics writing.
Completely freeWinA touch typing tutor very flexible, supporting customizable keyboard layouts.
Completely freeWinML-powered manga translator, written in Rust.
Completely freeWinMacLinuxAn LDraw editor for LEGO style digital building instructions.
Completely freeWinEXeLearning is a free authoring tool to create educational resources.
Completely freeWinQualitative 2D wind tunnel with an airfoil editor.
Completely freeWinA small teaching language that runs anywhere and transpiles to Rust, Swift, and Go.
Completely freeWinGenerate thesauruses (word book) from MKV videos so that each word has a specific context, and then memorize the words, sentences, and subtitles through the context.
Completely freeWinEducational typing tutor game starring Tux.
Completely freeLinuxLogisim a graphical tool for desigining and simulating logic circuits.
Completely freeWinMacLinux