Stellarium
Stellarium is a free and open source, multi-platform desktop planetarium, renders 3D photo-realistic skies in real time with OpenGL
Stellarium is a free and open source, multi-platform desktop planetarium, renders 3D photo-realistic skies in real time with OpenGL
Playary is a free multi-platform program for watching free movies and listening to free music and podcasts
Duplicati is a free and open source, multi-platform client-server program for creating encrypted backups for storage in the cloud/remote servers
Manga Reader is a free and open source program for reading manga/comics from a local library
Redshift Control Plasma – free and open source applet for automatically adjusting color temperature of screen depending on time of day in KDE Plasma
Curtail is a free and open source, simple and useful software for compressing images in Linux
MystiQ is a free and open source powerful audio and video converter, graphical interface for FFmpeg
Curlew is a free and open source easy-to-use audio and video converter for Linux