I wouldn't mind if you pasted this at the top of every Show HN. On the other hand, sometimes it's useful to point out similar things that exist. Maybe the autho

I wouldn't mind if you pasted this at the top of every Show HN. On the other hand, sometimes it's useful to point out similar things that exist. Maybe the author actually didn't know about those things and would like to! Criticism always requires walking a fine line being constructive or being discouraging. It's even harder with strangers whose intentions and motivations you don't know!