| Server name | Abbreviation | Variant name |
|---|---|---|
| nethack.alt.org | NAO | NetHack 3.4.3-NAO |
| nethack.alt.org | NAO_NH36 | NetHack 3.6.0 |
| un.nethack.nu | EUN | UnNetHack 5.3.1 |
| nethack4.org | NH4 | NetHack4 4.3.0 |
| grunthack.org | GHO | GruntHack 0.2.0 |
| em.slashem.me | ESM_NH36 | NetHack 3.6.0 |
| em.slashem.me | ESM_SLEX | SlashEMExtended 1.7.1 |
| ascension.run | ASC_NAO | NetHack 3.4.3-NAO |
| ascension.run | ASC_UNH | UnNetHack 5.3.1 |
| ascension.run | ASC_DNH | dNetHack 3.12.3 |
| ascension.run | ASC_DYN | DynaHack 0.6.0 |
| ascension.run | ASC_NH4K | NetHack Fourk 4.3.0.3 |
| ascension.run | ASC_FIQ | FIQHack 4.3.0 |
| nethack.alt.org | NAO_NH361 | NetHack 3.6.1-dev |
| ascension.run | ASC_NH4 | NetHack4 4.3.0 |