There is exactly one such program: https://www.torproject.org/tordnsel/dist/
On the bright side (for you, not for us) TorBEL never replaced it. We still use TorDNSEL to generate the exit-addresses files: https://exitlist.torproject.org/
I've found out that TorDNSEL is in the public domain (see [1]). It's OK, but I'm afraid that my (future) work will be proprietarized [2]. I'd prefer to relicense the whole thing under the GPLv3+ [3]. So TorDNSEL will stay free software [2]. What do you think?
If you are OK with that, I'll talk to the FSF [4] to ensure that everything is fine. It shouldn't be too hard, but I have some questions. For instance, will it be OK to remove copyright notices from sources because the license [1] says that "the 'Dedicator' [...] hereby dedicates whatever copyright the dedicators holds in the work of authorship [...] to the public domain"?
[1] https://gitweb.torproject.org/tordnsel.git/blob/HEAD:/LICENSE [2] https://www.gnu.org/philosophy/free-sw [3] https://www.gnu.org/licenses/gpl.html [4] https://www.fsf.org/