Esperanto is a constructed international auxiliary language created by L. L. Zamenhof to foster effective communication across linguistic and cultural boundaries. It represents the ideal of a politically neutral, inclusive second language that encourages global understanding and harmony.

Toki Pona is a minimalist constructed language developed by Sonja Lang, notable for its purposely small vocabulary and simplified grammar. It represents a philosophical approach to language and thought, aiming to cultivate clarity, positivity, and simplicity in human expression.