RSS-Bridge is a PHP project capable of generating RSS and Atom feeds for websites that don’t have one. It can be used on webservers or as a stand-alone application in CLI mode.
I made a very poor-man’s version of this as my first ever Sinatra app way back in the day. It’s cool to see that vision live on, but it sucks that tools like this have to exist. It seems that the author agrees with me on that:
We want to share with friends, using open protocols: RSS, Atom, XMPP, whatever. Because no one wants to have your service with your applications using your API force-feeding them. Friends must be free to choose whatever software and service they want.
We are rebuilding bridges you have willfully destroyed.