mixmello - mixmello is a free, open source tool to create remixed versions of your favourite playlists.
ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
remixmonsta - Tired of Despacito? Find a cool remix instead
cassini - Polyphonic Synthesizer for iPhone/iPod touch
The Rick Astley Remixer - Remix your favourite songs in your browser.
nlog Synth - Professional Virtual Analogue Synthesizer ::: check nlogmusic at YouTube :::