oniongen-hs is a vanity URL generator for Tor version 3 .onion addresses, lovingly written in Haskell.

Heavily inspired by oniongen-go.

$ oniongen <regex>

    regex: regular expression pattern addresses should match, consisiting of: a-z, 2-7

$ oniongen "^ryan"
Generating...
ryane5ngexawoklpkitekx6u5n4kokynwz6zdxiivusjtq2o246dryqd.onion
CPU Time: 44.78s

The public key, private key, and generated onion address are then saved in the current user's homepath "~/oniongen" where they can be utilized to host your newly created vanity URL over the Tor network.