Soundtrap, an online virtual DAW for podcasters

The online DAW https://www.soundtrap.com/ (2012, bought by Spotify 2017)
offers different products for Music Makers(7€/12€) or storytellers(12) that have features like loops, Midi-Instruments, remote interview, transcription and publish to spotify. There is a Free version that gives you only sound effects from freesound.org.