Colibri Lossless - A native audio player for macOS built from scratch using the award-winning BASS audio engine.
Slidebean - Presentations that design themselves
Macsome Music One - Macsome Music One is an all-in-one streaming music converter, which lets you download songs in MP3 / AAC / FLAC / WAV / AIFF / ALAC format from Spotify, Apple Music, Amazon Music, Tidal, YouTube Music, or other websites.
SlidesPPT - Beautiful free presentation templates for Google Slides
SicMu Player - SicMu Player is an application that enables users to play audio files on their devices easily.
Slides - Slides is a place for creating, presenting and sharing presentations. The Slides editor is available right in your browser. Unlike traditional presentation software, like PowerPoint, there's no need to download anything.