n2words
n2words converts a numerical number into a written one, supports 27 languages and has zero dependencies.
typopo
Fix frequent microtypography errors in multiple languages. Write neat texts without bothering about typography rules. Typopo works for English, German, Slovak, Czech and Rusyn language.
czech-data-box
A Node.js module for interacting with the Czech Data Box system (ISDS).
vocative-cz
Vocalization library for czech Names and Surnames.