KDE e.V.
Haruna
FreeHaruna: A decent, open-source media player for Windows
Windowskalarm
FreeKAlarm: A Decent, Customizable Alarm App for Windows
Windowskturtle
FreeKTurtle: An Intuitive Programming Tool for Education
WindowsKonsole
FreeComprehensive Overview of Konsole Terminal Emulator
Windowskdevelop
FreeComprehensive IDE for Multiple Programming Languages
WindowsGlaxnimate
FreeComprehensive Vector Animation Tool for Windows
WindowsKonversation
FreeFeature-Rich IRC Client for Windows
WindowsKontact
FreeKontact: A Linux Powerhouse for Personal Info
WindowsKTrip
FreeEfficient Public Transport Navigation Tool
WindowsKarp
FreeKarp: Does the job for basic PDF wrangling on Windows
Windowsbovo
FreeBovo: Simple Gomoku fun, but needs more features
WindowsBlinken
FreeEnhance Your Memory with Blinken Game
Windowskirigami-gallery
FreeKirigami Gallery: A decent widget showcase, if you use Kirigami
Windowsmerkuro
FreeComprehensive Calendar and Contact Management Tool
WindowsKiten
FreeComprehensive Japanese Language Study Tool
WindowsRuqola
FreeRuqola: A Feature-Rich Rocket.Chat Client
WindowsLokalize
FreeEfficient Localization Tool for Translation
WindowsKasts
FreeKasts: A Versatile Podcast Application
WindowsNeoChat
FreeComprehensive Matrix Client for Secure Messaging
Windowskbruch
FreeKBruch: A Comprehensive Fraction Practice Tool
Windowsakregator
FreeAkregator: A decent, no-frills RSS reader for Windows folks
WindowsKile
FreeKile: A LaTeX editor that doesn't make you scream
WindowsRKWard
FreeRKWard: A decent R IDE, but is it enough?
WindowsKStars Desktop Planetarium
FreeComprehensive Astronomy Software for All Enthusiasts
Windows
