Bandcamp
bandcamp.com
Stream independent music in full, and buy it as lossless files if you want it
No sign-up
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Listen, discover, tune, practise and generate sound.
bandcamp.com
Stream independent music in full, and buy it as lossless files if you want it
musiclab.chromeexperiments.com
Fourteen small experiments that let you build a rhythm and see harmony move
flat.io
Write and hear proper sheet music in a browser, with real-time collaboration
freesound.org
Half a million Creative Commons sound samples, searchable by how they sound
imslp.org
Free scanned sheet music for almost the entire classical repertoire
metronomeonline.com
A metronome that starts clicking the moment the page loads
music-map.com
Type one band and get a cloud of the artists people who like them also like
musicca.com
A chromatic tuner that listens through your microphone and shows cents off
mynoise.net
Builds a background soundscape from sliders you set band by band
radio.garden
Spin a globe and listen to whatever a local station is playing right now
somafm.com
Forty-odd human-curated, ad-free radio channels running since the dotcom era
Privacy
These process everything inside the browser. Load the page, disconnect from the network, and they still work.
musiclab.chromeexperiments.com
Fourteen small experiments that let you build a rhythm and see harmony move
metronomeonline.com
A metronome that starts clicking the moment the page loads
musicca.com
A chromatic tuner that listens through your microphone and shows cents off
By task
Archive
Kept on record so an old bookmark still leads to an answer. Each one names the site that does the job now.
ilike.com
Music discovery built on what your friends were actually playing
imeem.com
Streamed music, video and photos around a social profile before that was normal
musicovery.com
Picked music by plotting mood on a calm-to-energetic, dark-to-positive grid
odeo.com
A podcast directory and recorder, back when podcasts needed a directory
Questions
There is no single answer, which is why this page lists 11 of them with their limits stated. If you want to avoid signing up entirely, 9 of these work with no account at all.
3 of the 11 sites here process your file inside the browser and never upload it — they are marked "On device". The rest send your input to their server, which is fine for public material and worth thinking twice about for anything personal.
Some already have. 4 entries in this category has been retired and moved to the Archive with a working successor, so an old bookmark still leads somewhere useful.