PinMandarin is built on these open resources. Thank you to everyone who made them.
- CC-CEDICT
Dictionary: characters, pinyin and definitions
License: CC BY-SA 4.0
- ofou/hsk
HSK 3.0 (Level 1-9) word list, from the official 2025 syllabus
License: MIT, © 2021 Shawky
- bezlant/hsk-3-vocabulary
Short English meanings for HSK 3.0 words
License: CC BY-SA 4.0
- hskhsk.com
HSK 2.0 (Level 1-6) word list, 2012 revision
License: MIT, © 2020 Alan Davies
- wordfreq
Word frequencies, by Robyn Speer (includes SUBTLEX-CH by Cai & Brysbaert, OpenSubtitles and Google Books Ngrams)
License: CC BY-SA 4.0
The CC BY-SA 4.0 license text is at creativecommons.org/licenses/by-sa/4.0.