Free online Elementary Polish course from the University of Illinois, authored by Prof. F. Gladney — structured beginner lessons covering grammar, vocabulary, and reading in a university format.

Free US Defense Language Institute audio course for improving Polish proficiency — government-produced materials made publicly available through LiveLingua, aimed at learners with existing Polish foundations.

Free US Defense Language Institute Polish refresher course available via LiveLingua — audio-based review materials for learners who want to consolidate and revive existing Polish skills.

Award-winning interactive online Polish course for foreigners ('In Polish, around Poland') — structured multimedia lessons integrating language learning with Polish culture, geography, and everyday life.

Structured online Polish course covering grammar, vocabulary, and communication skills from beginner level — self-paced lessons with exercises designed for independent learners.

Free Polish online primary school for Polish children aged 5–14 living outside Poland — live webinars led by qualified Polish teachers following the official curriculum, resulting in official Polish school certificates.

Online Polish language courses from the joint University of Warsaw and Sorbonne Centre for Polish Civilization. Covers readings, grammar, and literary texts (Prus, Polish legends, Kolberg folklore) from A1 beginner to B2 upper-intermediate.