plus2rss is a small web server that provides Atom feeds of Google+ user posts. Generating links to the Atom feeds is as easy as plugging a Google+ user's URL into the form on / of the server. Similarly, Google+ user ids can be inputted.

plus2rss requires an API key for a Google account to be provided in a file path. This file path is passed as -simpleKeyFile on the command-line. plus2rss's other args can be seen with plus2rss -h.

Note that if you ship this thing to a server, you will need to bundle up the templates directory and, if its location on the server is not in the same directory as the executable, pass -templateDir to plus2rss.

You'll also want to adjust the -vhost parameter to match the public host name (and optional port) you're serving traffic from. It's used to create links internally.

(Finally, yep, plus2rss generates Atom, not RSS like it's name suggests. A little white lie told for clarity.)