FeatherPad is a lightweight Qt plain-text editor for Linux.
Kate
Kate is a multi-document, multi-view text editor by KDE. It features stuff like codefolding, syntaxhighlighting, dynamic word wrap, an embedded console, an extensive plugin interface and some preliminary scripting support.
Liri text
Liri Text is a cross-platform text editor made in accordance with Material Design.
Маркер
Marker is a simple yet robust markdown editor for the linux desktop.
Жазыңыз
KWrite is a text editor by KDE, based on the Kate’s editor component.
Tiled
Tiled is a general purpose tile map editor for all tile-based games, such as RPGs, platformers or Breakout clones.
Айқай
A general purpose, fast and lightweight editor with a keyboard-centric minimalistic user interface.
Блокнот
Stupidly simple notes app
Диффпфф
DiffPDF is used to compare two PDF files.
qтрактор
Qtractor is an Audio/MIDI multi-track sequencer application written in C++ with the Qt framework.