Source code is here: https://github.com/brentsimmons/NetNewsWire
For those, like me, who remember the app fondly, but can't remember the whole history Wikipedia has a dry version:
I especially ask because I never found a compatible mobile app that was even as good as Feedbin's web UI. Being better than Feedbin on a desktop browser strikes me as difficult.
To me, supporting only Feedbin is a showstopper and woefully insufficient considering its contemporaries all support half a dozen or more RSS aggregators out of the box. I'm not about to completely switch providers just to try out a different RSS reader.
I also find it strange any development effort at all went into "On My Mac" as an option. Local-only RSS is functionally useless to me since at any given time I'm reading either on two different Macs, an iPad, or an iPhone. No RSS reader is an island!
I get it, it's open source and free, and I suppose if you value that over a product's functionality and usefulness, then NetNewsWire's the RSS reader for you. But for me, this is simply not good enough.
I do use local-only RSS. I am still running an ancient version of Netnewswire (maybe 2.0). So, I do appreciate that option.
I bought both the Mac and iOS version of Reeder and was very disappointed by the lack of iCloud support. It was quite pricey for an app that I never ended up using properly.
For now I’ve settled on News Explorer. I still miss Reeder’s UI but at least News Explorer actually works for me.