Office & Productivity

• Kraft - Kraft simplifies to handle documents like invoices in your small business.

Plasma desktop / Scripts

• Kröhnkite (⭐1.2k) - A dynamic tiling extension for KWin.

Utilities & Tools

• KDE Wallet Manager - Manage the passwords on KDE systems. The KDE wallet subsystem allows access and password management of every application that integrates with the KDE wallet 📌.

Development & Programming

• Umbrello - UML Modeller is a Unified Modelling Language (UML) diagram program based on KDE Technology 📌.

Plasma desktop / Extensions

• Karousel (⭐718) - KWin tiling script with scrolling. Works especially well with ultrawide screens.

Plasma desktop / KCM Modules and Systems

• kcm-wacomtablet - KDE GUI for the Wacom Linux Drivers 📌.

Internet & Networking

• NeoChat - Matrix network client for KDE 📌.

• Tokodon - Tokodon is a Mastodon client. It allows you to interact with the Fediverse community 📌.

Office & Productivity

• GhostWriter - No distraction markdown editor 📌.

Utilities & Tools

• QOwnNotes - Note taking app with cloud integration, web and mobile support.

Development & Programming

• Kate - Kate is a Feature-Packed Code Editor with advanced support for LSP, Syntax Highlighting, multi-cursoe and more 📌.

Plasma desktop / Extensions

• Polonium - The successor of Bismuth for KDE Plasma 6.

Internet & Networking

• Akregator - Enables you to follow news sites, blogs and other RSS/Atom-enabled websites 📌.

• GSConnect - A complete implementation of KDE Connect especially for GNOME Shell with Nautilus, Chrome and Firefox integration.

• KDE Connect - A project to communicate across all your devices: receive your phone notifications on your desktop computer, control your desktop from your phone, etc 📌.

• KGet - A versatile and user-friendly download manager 📌.

• KMail - KMail is the email component of Kontact, the integrated personal information manager from KDE 📌.

• Konqueror - Uses the KHTML rendering engine (and optionally Webkit) so it supports the latest web standards such as HTML5, JavaScript, CSS3, and others 📌.

• Konversation - A user-friendly Internet Relay Chat (IRC) client built on the KDE Platform 📌.

• KRDC - A client application that allows you to view or control a desktop session on another machine that is running a compatible server (VNC & RDP) 📌.

• KTorrent - A BitTorrent application which allows you to download files using the BitTorrent protocol 📌.

• Otter Browser - Otter Browser aims to recreate the best aspects of the classic Opera (12.x) UI using Qt5.

• Plasma-browser-integration - A suite of new features which make Firefox, Chrome and Chromium-based browsers work with your desktop 📌.

• qBittorrent - An advanced BitTorrent client programmed in C++, based on Qt toolkit and libtorrent-rasterbar.

• Qt WebBrowser - Qt WebBrowser is a browser for embedded devices developed using the capabilities of Qt and Qt WebEngine.

Graphics & Imaging

• digiKam - Professional Photo Management with the Power of Open Source 📌.

• Gwenview - A fast and easy to use image viewer by KDE 📌.

• KColorChooser - A simple application to select the color from the screen or from a pallete 📌.

• KolourPaint - A simple painting program to quickly create raster images. It is useful as a touch-up tool and simple image editing tasks 📌.

• Krita - Painting tool designed for concept artists, illustrators, matte and texture artists, and the VFX industry 📌.

• Okular - A universal document viewer 📌.

• Spectacle - An application for capturing desktop screenshots 📌.

Multimedia

• Elisa - A music player developed by the KDE community that strives to be simple and nice to use 📌.

• Haruna - Open source video player built with Qt/QML and libmpv 📌.

• Kdenlive - A non-linear video editor for Linux using the MLT video framework.

• KMix - A sound channel mixer and volume control 📌.

• KWave - A sound editor built on the KDE Frameworks 5 📌.

• SMPlayer - Media player with built-in codecs that can play virtually all video and audio formats.

• VLC - A free and open source cross-platform multimedia player and framework that plays most multimedia files, and various streaming protocols.

Office & Productivity

• Kate - A multi-document, multi-view text editor by KDE 📌.

• Kronometer A stopwatch application for KDE 📌.

• KWrite - A text editor by KDE, based on the KDE Frameworks editor component 📌.

• RSI Break - RSIBreak can be used to remind you to take a break now and then 📌.

System Administration

• Discover - Intended for users and distros where the terminal isn't the optimal solution for installation of apps and add-ons or updates 📌.

• Dolphin - File manager included in the KDE desktop 📌.

• KDiskFree - Displays the available file devices (hard drive partitions, drives, etc.) along with information on their capacity, free space, type and mount point 📌.

• Konsole - Terminal emulator included in the KDE desktop 📌.

• Krusader - An advanced twin panel (commander style) file manager for KDE 📌.

• KSystemLog - A system log viewer tool 📌.

• Kup - A backup scheduler for KDE's Plasma desktop 📌.

• Sweeper - Sweeper helps to clean unwanted traces the user leaves on the system and to regain disk space removing unused temporary files 📌.

• Yakuake - A drop-down terminal emulator based on KDE's Konsole technology 📌.

Utilities & Tools

• Android File Transfer - Reliable MTP client with minimalistic UI.

• Ark - Archiving Tool 📌.

• fancontrol-gui (⭐362) - GUI for fancontrol which is part of lm_sensors.

• KFind - A standalone search tool, launched by KRunner or from your menu. It is also integrated into Konqueror as "Find File" in the "Tools" menu 📌.

• KRename - A utility to rename multiple files 📌.

• QtPass - A multi-platform GUI for pass.

• Yin-Yang (⭐692) - Auto Night-mode for Linux.

Development & Programming

• Kompare - A diff/patch frontend 📌.

• Okteta - Hex Editor 📌.

Education

• KTurtle - An educational programming environment that aims to make learning how to program as easy as possible 📌.

Plasma desktop / Extensions

• Bismuth (⭐2.4k) - A KDE Plasma extension that lets you tile windows automatically and manage them via keyboard, just like in classical tiling window managers (i3, dwm or XMondad). (NOTE for KDE Plasma 6, check Polonium listed below)

• Dynamic Wallpaper Engine (⭐367) - A wallpaper plugin that continuously updates the desktop background based on the current time in your location.

• Kvantum (⭐1.8k) - An SVG-based theme engine for Qt4/Qt5, KDE and LXQt, with an emphasis on elegance, usability and practicality.

• Latte-Dock - Latte is a dock based on Plasma frameworks that provides an elegant and intuitive experience for your tasks and plasmoids 📌.

• Window Title Applet (⭐248) - Plasma 5 applet that shows the current window title and icon in your panels.

Plasma desktop / KCM Modules and Systems

• kde-gtk-config - GTK2 and GTK3 Configurator for KDE 📌.

Plasma desktop / Themes

• ChromeOS (⭐180) - A materia Design theme for KDE Plasma desktop.

• Fluent (⭐214) - A Microsoft inspired fluent Design theme for the KDE Plasma desktop.

• Helium - A translucent theme for Plasma 5.

• Hello (⭐219) - A compilation of various color-schemes, themes, icons and more for the KDE Plasma desktop. It is unopinionated, putting you in charge.

• Materia KDE (⭐652) - A port of the popular GTK theme Materia for Plasma 5 desktop with a few additions and extras.

• McMojave (⭐256) - A MacOSX Mojave like theme for KDE Plasma desktop.

• Orchis (⭐283) - A materia Design theme for KDE Plasma desktop.

• Qogir (⭐190) - A flat design theme for KDE Plasma desktop.

• WhiteSur (⭐1.1k) - A MacOS Big Sur theme for KDE Plasma.

Plasma desktop / Qt and GTK+ Applications Appearance

• Akava-Kv (⭐196) - User oriented Kvantum theme for KDE.

• Chrome-KDE5BreezeDark (⭐23) - A theme for Chrome on KDE5 when using the Breeze Dark window decoration.

• KDE-Rounded-Corners (⭐167) - Rounds the corners of your windows.

• SierraBreeze (⭐354) - OSX-like window decoration for KDE Plasma written in C++.

Plasma desktop / Icons

• Candy (⭐1.2k) - Sweet gradient icons.

• Flatery (⭐319) - Icon theme for Linux in flat style.

• Papirus (⭐7.5k) - Material icon theme, initially based on Paper.

• Zafiro (⭐452) - Minimalist icons created with the flat-desing technique, utilizing washed out colors and always accompanied by white. The priority is simplicity.

Plasma desktop / Scripts

• kwin-tiling (⭐1.1k) - Tiling script for kwin.

Documentation and Resources / Display Manager

• KDE Invent - Discover KDE projects, groups and snippets 📌.

• KDE Bugtracker - KDE's official Bugtracker 📌.

Internet & Networking

• Falkon - QtWebEngine based cross-platform web browser 📌.

• Smb4K - Advanced Network Neighborhood Browser and Samba Share Mounting Utility 📌.

System Administration

• KInfoCenter - A utility that provides detailed information about a computer system 📌.

Utilities & Tools

• KWinFT - Wayland compositor and X11 window manager.

Documentation and Resources / Display Manager

• KDE Configs (⭐988) - List of KDE configuration files and more.

Utilities & Tools

• Wacom GUI (⭐140) - Python/PyQt Wacom GUI for KDE.

Education

• LabPlot - Interactive graphing and analysis of scientific data 📌.

Plasma desktop / Extensions

• Hoppla (⭐70) - KDE Plasma desktop widget to control Philips Hue lights.

• Places Widget (⭐13) - Plasma 5 widget that gives access to user places.

• Window AppMenu Applet (⭐418) - Plasma 5 applet in order to show the window appmenu.

Plasma desktop / Themes

• Canta (⭐78) - A flat design theme for KDE Plasma desktop.

• Darkine KDE (⭐45) - Theme for KDE Plasma 5 desktop, SDDM and more.

• Layan (⭐468) - A flat design theme for KDE Plasma desktop.

Plasma desktop / Qt and GTK+ Applications Appearance

• Breeze10 (⭐107) - A Windows 10 style windows decoration for KDE Plasma.

• BreezeBlurred (⭐201) - A fork of KDE Breeze window decoration written in Qt C++.

• BreezeEnhanced (⭐198) - A fork of KDE Breeze decoration with additional options.

• Sweet KDE (⭐230) - A dark and modern theme for KDE plasma.

• XBoomer (⭐99) - XP Window Decorations for KDE Plasma.

Plasma desktop / Icons

• La Capitaine (⭐2k) - Icon pack with inspiration taken from the latest iterations of macOS and Google's Material Design.

• Tela (⭐1.7k) - A flat colorful Design icon theme.

Plasma desktop / Scripts

• Grid-Tiling-Kwin (⭐909) - A kwin script that automatically tiles windows.

Plasma desktop / Display Manager

• Chili (⭐216) - The hottest login theme around for KDE Plasma 5.

• Delicious (⭐110) - A delicious SDDM theme for DE collectors/addicts.

• Sugar Candy - The sweetest login theme available for the SDDM display manager.

Utilities & Tools

• KWin-lowlatency (⭐367) - An attempt to reduce latency and stuttering in the popular KWin compositor used in KDE.

Internet & Networking

• Firefox KDE - Standalone web browser from mozilla.org with OpenSUSE patch, integrate better with KDE.

Plasma desktop / Themes

• Breath - Breath Theme for Manjaro Linux (Plasma 5).

Articles / Display Manager

• Kai Uwe's Blog - Stories of a Plasma developer.

Plasma desktop / Icons

• Antu - A smooth icon theme designed for Plasma Desktop.

Plasma desktop / Cursors

• Capitaine (⭐1.2k) - An x-cursor theme inspired by macOS and based on KDE Breeze.

Internet & Networking

• KNetworkManager - A KDE client for the back end NetworkManager software 📌.

Multimedia

• Amarok - Amarok is a powerful music player for Linux, Unix and Windows with an intuitive interface 📌.

Office & Productivity

• Calligra - Includes efficient and capable office components 📌.

Development & Programming

• KDevelop - A cross-platform IDE for C, C++, Python, QML/JavaScript and PHP 📌.

Plasma desktop / KCM Modules and Systems

• kded_rotation (⭐64) - A small, hacky KDED module for handling automatic screen rotation on tablets and hybrid laptops.

Plasma desktop / Qt and GTK+ Applications Appearance

• breeze-gtk (⭐80) - A GTK Theme Built to Match KDE's Breeze 📌.

Documentation and Resources / Display Manager

• KDE Wikis - The KDE wikis are a source of information and documentation for the KDE desktop, applications, teams, events and more 📌.

Articles / Display Manager

• KDE.news - The official KDE news website 📌.

• Planet KDE - Blogs of KDE contributors 📌.

Communities / Display Manager

• KDE Store - Official KDE Store for developers to share Plasma customizations 📌.

Utilities & Tools

• KeePassXC - Cross-platform community-driven port of Keepass password manager.

Development & Programming

• Qt Designer - Qt tool for designing and building graphical user interfaces (GUIs) with Qt Widgets.

Plasma desktop / Cursors

• Bibata - Material Based Cursor Theme.

Articles / Display Manager

• Nate Graham's Blog - Adventures in Linux and KDE.

Documentation and Resources / Display Manager

• ArchWiki - Arch Linux KDE Wiki.

• Gentoo Wiki - Gentoo KDE Wiki.

Articles / Display Manager

• Phoronix - Phoronix KDE News Archives.

• Nico's Blog - Programmer from Germany that is working on KDE.

Communities / Display Manager

• Kreddit - KDE Community on Reddit.

• Stack Overflow - Questions tagged with kde.

Plasma desktop / Themes

• Adapta KDE (⭐465) - A port of the popular GTK theme Adapta for Plasma 5 desktop with a few additions and extras.

• Arc KDE (⭐930) - A port of the popular GTK theme Arc for Plasma 5 desktop with a few additions and extras.