1:Spotify

Spotify is a free and paid app as well as website with over 248 million users per month.

The free version:
Limited Streaming
Shuffle Play
No Downloading

Paid/Premium-
Downloading
Play any track
Unlimited Stream

This Platform hosts over 118 million premium users
In my personal opinion
Spotify is the best

2:Apple Music
Apple Music is a paid streaming platforms made by one of the most successful companies in the last decade.
With over 100 million active monthly users
It's pretty successful

The Platform has different subscription options such as
College Student
Family

Since it's a paid app here are two of the main features:
Dark Mode
Downloading

3:Pandora
Pandora is a free and paid music streaming platform with alteast 66 million users

Free:
No Downloading
Limited Streaming

Premium:
Basically the same thing as Spotify

4:Amazon Music
Amazon Music is a paid streaming app
Unless you have Amazon Prime
Just link your Amazon Prime Account to the app and you're good to go
With atleast 56 million worldwide users
This app is really successful considering it's recent discovery

Perks

Limited music streaming: Amazon Prime Music affords unlimited, ad-free access to a song library stocked with over 2 million tracks. You can stream them to various devices, but songs can also be downloaded to your phone or tablet for offline listening

5:Tidal
Tidal is a paid music streaming app.With access to many "New Released Music"
With over 3 million active users
Which is pretty good considering it isn't mentioned that much

Perks:
Very Developed Music Sound