Yeah I'm not usually a "hey there's another project with that name" kinda guy but, build manager and version manager?
Isn't there some other part of the keyboard they could have mashed?
Sure there is. One of the proposed successors to ASDF the Common Lisp package manager is XCVB (https://common-lisp.net/project/xcvb/), the eXtensible Component Verifier and Builder.
Why is there no common place where people can see names that have been used already? It could make us avoid such nuissance.
Why don't you build one? The worst that can happen is that you learn the answer to your question.
There is. It's called Debian.
There is, google: "asdf programming". All the other projects named asdf pop up. The people who do not use google will not use a new common place either.
Looking up documentation when you have build problems in CL is now very hard. It was already very hard however, so no big deal.