Hopsan is a free and open source simulation and modelling application for fluid power and mechatronic systems for Linux and Windows. It is developed at Linkoping university and released under Apache License Version 2.0 and GPL v3 license. the core simulation library comes with multi-core support and subset of Modelica support. And it is also comes with embedded simple numeric script language numhop.
Numpty Physics is a free and open source gravity based crayon drawing puzzle game using Box2D engine. In this game you need to create whatever drawing blocks, ramps, levers, pulleys to get the little red thing to the little yellow thing. It also comes with built-in level editor to build your own levels in this game. It is released under open source GNU General Public License v3.0. It is really fun and interesting game.
OCRFeeder is a free and open source optical character recognition and document layout analysis application for Linux. You can add images and pdf files for character recognition and export your content in ODT, HTML, PDF and plain text. It comes with four build-in OCR engines, Tesseract, GOCR, Ocrad and Cuneiform. It is released under open source GPL-3.0+ license. Some other features are spellchecker, unpaper, import image from scanner and image deskewer.
Scribl is a free and open source educational video making application for Linux. Using Scribl you can make easy animated Handwriting Instructional videos for your video project or tutorial. It is written using Rust and released under open source Apache License 2.0. It comes in three drawing modes draw in super slow motion, Draw in slow motion and Draw in real time.
You can also set fade effect, add and record audio with your video. It also comes with de-noising and speech detection options. You can export your video in mp4 file format.
Outwiker is a free and open source personal Wiki and outliner application for Windows and Linux. Using this Outwiker application you can store notes in a tree and it store notes as folders on disk. It comes with tags, page links, bookmarks, icons for notes, attach files, different page types and plugins support. You can also insert image in page and create plain text, HTML pages and wiki pages.
Sound Juicer is a free and open source CD ripping application for Linux. It is based on GStreamer and libburnia and GTK for GUI. Using this application you can read or play and write CD (optical discs) and extract the audio from audio CD and convert them into audio files. It supports MusicBrainz service to get audio tracks details. It is released under GPL version 2 or greater.
Spivak is a free and open source Karaoke player for Linux, Windows and MacOS. It is a standalone Karaoke player based on GStreamer and Qt5. It is released under GNU GPL version 3 license. It supports MIDI/KAR, KaraFun, CDG, LRC (v1 and v2), Encore! Lyric, KOK, Ultrastar (TXT) karaoke lyric formats and AVI, MKV or Flash formats video karaoke formats. It also supports animated images and video background for karaoke songs, LIRC for remotely controlling and background music.
GitHub Desktop is a free open source GitHub.com app. It is Electron based and written in TypeScript and uses React. There is no official Linux installer from GitHub and it only provides Windows and MacOS installers. But you can install GitHub Desktop on various Linux distributions from GitHub Desktop fork shiftkey/desktop. In this this article we will see how to install GitHub Desktop on Ubuntu Linux
Dmidiplayer or Drumstick multiplatform MIDI file player is a free and open source MIDI player for Linux, Windows, and macOS. It supports MIDI Output to hardware MIDI ports and soft synths. In this app you can change MIDI volume level using MIDI CC7 and scale song speed between half and double tempo. It also comes with seperate channel views for Lyrics and Piano Player. This player supports MID/KAR and WRK file formats and -12 and +12 semitones for song transpose. It is released under GNU General Public License version 3.0 (GPLv3).
Glide is a free and open source minimalistic Media Player for Linux and MacOS. It is written in rust and GTK and based on GStreamer. It comes with subtitle support, track synchronization, video and audio track selection and visualization support. It supports asf, avi, 3gp/mp4/mov, flv, mpeg-ps/ts, mkv/webm, mxf, ogg and more video container formats. The user interface is very simple and easy to use. It is released under MIT License.
