Hacker News Reader

Self-hosted Wallabag instance is great. I collect article there first, sync them to pocket as a backup. (Wallabag RSS->IFTTT->Pocket)

Does it send articles to Kindle?

I had a look around and in an attempt to pre-empt - no, I'm not jailbreaking my kindle

There are attempts with some serverside voodoo, but it doesn't look like it's possible.