SourceForge still supports downloads and provides pretty good stats around them too. You can put your OSS file releases on SourceForge and keep other project stuff (code, tickets, etc) elsewhere if you want. Under Admin, Tools, you can pick and choose which SourceForge tools to use or not, and even add external links to project resources on other sites

Disclosure: I work for SourceForge

... or use bittorent...

For that matter, with BTSync I can share my project's git repository with a read-only "secret" (identifier, like a magnet link) and cut out google code/github, etc, all together (now, if only there were a foss version).

Or dream host's Files Forever. You pay once to put them up, and then they can be downloaded for free by anyone.

Also gone for unrelated reasons, sorry: https://files.dreamhost.com/

Oh, bummer. Looks like their replacement [1] is a cheaper version of S3, but they still charge for download bandwidth.

[1]: http://dreamhost.com/cloud/dreamobjects/

I thought that was a service for selling files. How does the pricing work out if they can be free?

Edit: I found some of the old text, it's apparently dual-nature. You can make backups that you/friends download for free. You can also have files for sale that people pay to download. No way to have permanent public hosting.