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MEGA launches new large file transfer service Transfer.it with no file size limit
(alternativeto.net)
This is a most excellent place for technology news and articles.
I think there is a place for both end-to-end encrypted file uploaders and non end-to-end encrypted file uploaders but the speed is going to be a lot slower for end-to-end encrypted file uploaders.
I think the only reason you haven't seen wormhole.app recommended much is because it's not open source (not that it matters for browser-based senders). There is also send.vis.ee witch is open source and recommend by privacyguides.org.
There are several open source magic wormhole clients.
Wormhole.app and Magic Wormhole have nothing to do with each other the names are just very similar.