[saurik]

Yes, because all that is needed for something to be "trademarked" is for someone to use the term "in commerce" in a consistent fashion and to build an audience of expectation for what that word means in a specific region and context of discourse. When I see "curl", I know what that is: I know what it is supposed to be, and so it is trademarked in most reasonable countries. I assume your question is "did they register their trademark?", but one does not need to register one's trademark to receive the protections of a trademark, as that would make the law somewhat useless: the goal of trademark law is in many ways to protect users who are being tricked, not trademark owners.

[Jtsummers]

cURL: https://curl.haxx.se/legal/thename.html, so it seems he has not obtained a trademark on this in the US and lives in Sweden, where trademarks aren't a legal thing.

wget: https://www.gnu.org/prep/standards/html_node/Trademarks.html

wget is a GNU project (now at least, originally?). They seem to (makes sense) have a thing against acknowledging trademarks period. So I'm not sure it'd make sense for them to even try to enforce a trademark should someone make a product named (or alias their product to the name) wget.

Trademarks aren't a universal thing, not every country or culture will have an equivalent concept, legal or otherwise. And if products aren't trademarked then claiming trademark abuse is inaccurate.