| Ancestor Language | Descendant Languages |
| English | Americai Speak
Basic English Dutton Speedwords SIMPLE Tutonish [also from German] Volapük [also from German] |
| Esperanto | Ido
Novial [actually from Ido, also from Occidental] Poliespo Sen:esepera |
| German | Folkspraak [with other Germanic languages]
Tutonish [also from English] Volapük [also from English] |
| Greek | Glosa [also from Latin]
Interglossa [also from Latin] |
| Ido | Novial [also from Romance languages] |
| Interlingua | Latino Moderne |
| Latin [see Romance as well] | Glosa [also from Greek]
Interglossa [also from Greek] Interlingua [also from Romance and other Western European languages] Latino Moderne [uses Interlingua vocabulary] Latino Sine Flexione SPL |
| Loglan | -gua!spi
Lojban |
| Romance languages | Eurolengo [concentrating on Spanish]
Interlingua [also from other Western European languages] Mundo-Lingue Neo Novial [also from Ido] Occidental Talossan Unitario [concentrating on Spanish] |
| Russian | Nadsat |
| Spanish | Eurolengo [with other Romance languages]
Unitario [with other Romance languages] |
Prepared by Jeffrey Henning
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