OpenShot is a very easy-to-use video editor that anyone can understand. A large number of video and audio formats are supported, it is possible to insert transitions and use effects, both video (brightness, contrast, white balance, sepia, old film effect, etc.) and sound. It is possible to insert 3D titles created in Blender. The program easily integrates into the GNOME environment; files can be added to the project by simply dragging and dropping. Exporting files makes it easy to have ready-made profiles.

Integrated application development environment (IDE) in the programming languages Java, JavaFX, Ruby, Python, C++, PHP, JavaScript/HTML5, Groovy and several others. To support development for mobile platforms (J2ME), you must install the NetBeans Mobility Pack separately.

In terms of quality and capabilities, NetBeans IDE is not inferior to the best commercial (paid) integrated development environments, supporting refactoring, profiling, highlighting syntactic structures with color, autocompletion of typed structures on the fly, many predefined code templates, and more.

This is an easy-to-use, yet powerful audio file editor.
It works with a mixer built into a personal computer system, as well as external audio media.
It provides for the integration of effects: reversal, echo, phase vibrato (phaser), dynamic timbre change (wahwah).
In the editor, you can remove defects from the audio track: hiss, static noise, hum, and also adjust the pitch and tempo.
Works with formats: WAV, Ogg Vorbis, AIFF, AU, MP3, MPEG.

StarDict is a cross-platform international dictionary lookup program.

Main features:
* Glob-style pattern matching search
* Fuzzy search
* Working from system tray
* Scanning mouse selection and showing pop-up windows with translation of selected words
* Pronouncing of the translated words
* Plugins support
* ..and more

FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has become widely used. FluidSynth itself does not have a graphical user interface, but thanks to its powerful API, several applications use it and it has even found its way into embedded systems and some mobile applications.

Qsynth - GUI for FluidSynth.

Kdenlive is a non-linear video editor that supports DV, HDV and many other formats.
Its main features:
✔guides and markers for organizing the editing table
✔copy and paste clips, effects and transitions
✔changes in real time
✔video capture via FireWire and Video4Linux
✔screen capture
✔export to any FFMPEG supported format

Denemo is a program designed to prepare sheet music for further processing and publication using LilyPond.
This is not a WYSIWYG music editor; its task is to quickly type notes, without displaying them correctly. Almost all input functions are implemented using hot keys, which actually speeds up the typing process, according to the developers. Some keyboard commands are the same as the corresponding commands in the Lilypond syntax: for example, moving the cursor or note an octave up and down is done with the keys ' and, respectively, the beginning and end of a phrasing line - ( and ), etc. Command overrides are available, so the user can customize the environment completely for yourself.
Denemo has different operating modes: insertion modes (normal and classic, which differ in the order of keystrokes when entering notes) and editing. Also, any operation can be performed with the mouse and recognition of their recorded sound, giving musicians a more familiar input method.
By saving scores in the LilyPond format and further editing the resulting source file, you can improve the appearance. It is possible to export scores in ABC music notation format and create MIDI files.

media player of the VideoLAN project. It allows you to play MPEG, MPEG2, MPEG4, DivX, MOV, WMV, QuickTime, mp3, Ogg/Vorbis files, DVD, VideoCD and multimedia streams from various network sources.
VLC can also be used as a broadcast server to transmit the stream it reads to the network using a broadcast mechanism or via the HTTP protocol.

A free program for recording scores and editing tablature. It also allows you to work with MIDI.

Possibilities:

це програма, яка надає змішаний аудіо / MIDI-секвенсор (відтворення і запис), багатодоріжковий редактор, редагування музики з використанням як рояль н-рол і оцінка позначень, MIDI файл вводу-виводу, LilyPond і Csound файли експорту і т.д.