The Tequistlatecan family currently consists of two languages that have been called Oaxacan Chontal (chontal de Oaxaca). Highland Oaxacan Chontal has some dialectical variation. Speakers of Lowland Oaxacan Chontal (also called Huamelulteca) are very bilingual (in Spanish) and the native language is in danger of extinction. The Summer Institute of Linguistics has concluded its work in this language family.

• technical and comparative articles
• primers
• books of traditional stories
• doctoral dissertations (general descriptions)
• dictionary, vocabulary
• New Testament
• contribution to the Archivo de Lenguas Indígenas de México

• Some have proposed that the Tequistlatecan family be included in the Hokan stock.
• Short biography of Viola Waterhouse
• Population statistics by language family
• Ethnologue listing (Tequistlatecan family)