We used to use Freshmeat.net for this for a really long time, Slashdot moved it over to Sourceforge but then it died in 2014. http://freshmeat.sourceforge.net/
Neat! I added the top level RSS [1] to The Old Reader [2] and it pulled up just fine (validation), the title shows up as "xfer" by default but otherwise works fine for this reader.
The RSS feed doesn’t validate so you’d want to browse it with a browser, rather than track it with a feed reader.