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 - [![Open-Source Software][OSS Icon]](https://gitlab.com/ColinDuquesnoy/MellowPlayer) [Mellow Player](https://colinduquesnoy.gitlab.io/MellowPlayer/) - Cloud music integration for your desktop.
 - [![Open-Source Software][OSS Icon]](https://github.com/mixxxdj/mixxx) [Mixxx](https://www.mixxx.org/download/) - Free DJ software that gives you everything you need to perform live mixes; veritable alternative to Traktor.
 - [![Open-Source Software][OSS Icon]](https://github.com/mopidy/mopidy) [Mopidy](https://www.mopidy.com/) - An extensible music server written in Python.
+- [![Open-Source Software][OSS Icon]](https://github.com/SeaDve/Mousai) [Mousai](https://github.com/SeaDve/Mousai) - Mousai is a simple application that can identify songs similar to Shazam.
 - [![Open-Source Software][OSS Icon]](https://github.com/martpie/museeks) [Museeks](https://museeks.io/) - A simple, clean and cross-platform music player.
 - [![Open-Source Software][OSS Icon]](https://github.com/musescore/MuseScore) [MuseScore](https://musescore.org) - Create, play and print beautiful sheet music.
 - [![Open-Source Software][OSS Icon]](https://github.com/metabrainz/picard) [MusicBrainz Picard](https://picard.musicbrainz.org/) - Picard is a cross-platform music tagger written in Python.
@@ -816,6 +817,7 @@
 - ![Nonfree][Money Icon] [Everdo](https://everdo.net/) - TODO list and Getting Things Done® app for all platforms. Beautiful, powerful, not SaaS, free version available.
 - [![Open-Source Software][OSS Icon]](https://github.com/codito/gnome-pomodoro) [Gnome Pomodoro](http://gnomepomodoro.org/#download) - A full-featured pomodoro timer for GNOME.
 - [![Open-Source Software][OSS Icon]](https://github.com/mank319/Go-For-It) [Go For It](http://manuel-kehl.de/projects/go-for-it/) - Go For It! is a simple and stylish productivity app, featuring a to-do list, merged with a timer that keeps your focus on the current task.
+- [![Open-Source Software][OSS Icon]](https://invent.kde.org/pim/kalendar) [Kalendar](https://apps.kde.org/kalendar/) - Kalendar is a calendar application that allows you to manage your tasks and events.
 - ![Nonfree][Money Icon] [Pomodone App](https://pomodoneapp.com/) - PomoDoneApp is the easiest way to track your workflow using Pomodoro technique®, on top of your current task management service.
 - [![Open-Source Software][OSS Icon]](https://userbase.kde.org/RSIBreak) [RSIBreak](https://userbase.kde.org/RSIBreak) - RSIBreak takes care of your health and regularly breaks your work to avoid repetitive strain injury.
 - [![Open-Source Software][OSS Icon]](https://gitlab.gnome.org/World/Solanum) [Solanum](https://gitlab.gnome.org/World/Solanum) - A pomodoro timer for the GNOME desktop.
@@ -994,6 +996,7 @@
 - [![Open-Source Software][OSS Icon]](https://github.com/aramg/droidcam/tree/master/linux) [Droidcam](https://www.dev47apps.com/) - DroidCam turns your Android device into a wireless webcam for your PC.
 - [![Open-Source Software][OSS Icon]](https://github.com/thjaeger/easystroke) [EasyStroke](https://github.com/thjaeger/easystroke) - Easystroke is a gesture-recognition application for X11.
 - [![Open-Source Software][OSS Icon]](https://github.com/OzymandiasTheGreat/emoji-keyboard) [Emoji Keyboard](https://github.com/OzymandiasTheGreat/emoji-keyboard) - Virtual keyboard-like emoji picker for Linux.
+- [![Open-Source Software][OSS Icon]](https://github.com/tchx84/flatseal) [Flatseal](https://github.com/tchx84/flatseal) - Flatseal is a graphical utility to review and modify permissions from your Flatpak applications.
 - [![Open-Source Software][OSS Icon]](https://github.com/FreeRDP/FreeRDP) [FreeRDP](https://www.freerdp.com/) - FreeRDP is a free implementation of the Remote Desktop Protocol (RDP).
 - [![Open-Source Software][OSS Icon]](https://github.com/Simmesimme/Gnome-Pie) [GnomePie](https://github.com/Simmesimme/Gnome-Pie) - the circular app launcher for Linux desktops.
 - [![Open-Source Software][OSS Icon]](https://github.com/gramps-project/gramps) [Gramps](https://github.com/gramps-project/gramps) - Research, organize and share your family tree with Gramps.