[chrismorgan]

I have found linkchecker to be unreasonably slow by default, very fragile if you try to make it any faster (e.g. occasional socket errors with almost any concurrency, regardless of the purported ulimits, in a way that suggested some kind of socket leaking to me at the time), and possessing fairly bad reporting. Also, on Windows, being built with ancient Python meant it didn’t support SNI, so I had to delve into it to figure out a way of turning TLS verification off to make it work pretty much at all, which also hints at its generally poor configurability and surprisingly poor documentation (given the fact that there is actually a moderate amount of it).

I still use linkchecker (because I’ve never completed my Rust-based link checker that I started several years ago), and have extended it at work to support client-side certificates which we use on CI, but I’m generally fairly unimpressed with linkchecker.