Spotify
As one of leaders of music streaming. This is a base line of just understanding what you like and using it as a tool discover new sounds. There are ways to make playlist of songs you like to import for whatever you DJ software you decided to use but unfortunately there is no way to integrate those playlist on the software. You have to manually find that music on other platforms for you to play.
Soundcloud
Soundcloud is a crucial part of the DJ experience in today’s world. There always going to be official releases to an artist work, but Soundcloud works in a way that supports more of those who release tracks of inspiration regarding remixes and different edits, that expand on sounds and influences. Soundcloud can integrate to all DJ software platforms but organizing the tracks on your side to perform is difficult and not so easy to customize to your preferences.
Beatport
Beatport is elite in quality. It’s high definition studio quality tracks is the highest tier of all streamers. Although its greatness is undeniable, its catalog all music is what holds its back from mainstream use. The majority of its catalog is geared more to electronic dance music. Variety of other genres and sounds is not as vast as others with way bigger libraries. All tracks do sound amazing with all DJ software programs.
Tidal
Tidal. High quality and expansive library for the true music lover. It brings familiar features from the big streamers, but is intuitive to use on DJ software. It brings the ease of use by just using your phone to prepare music on your phone, and then having it ready to go on your software.