Duolingo (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Duolingo" in English language version.

refsWebsite

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101web.archive.org

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32duolingo.com

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13techcrunch.com

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13youtube.com

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9doi.org

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7forbes.com

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5fastcompany.com

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3nbcnews.com

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3theverge.com

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3semanticscholar.org

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3duolingo-papers.s3.amazonaws.com

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3usatoday.com

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2vator.tv

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2venturebeat.com

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2nsf.gov

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2cnn.com

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2nih.gov

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1duoplanet.com

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1quora.com

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1bloomberg.com

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1livemint.com

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1newscientist.com

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1cmu.edu

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1hindustantimes.com

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1techradar.com

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1absolutegeeks.com

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1happilyevertravels.com

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1nasdaq.com

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1chinadaily.com.cn

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1yahoo.com

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1slate.com

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1harvard.edu

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1ukm.my

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1thecut.com

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1kotaku.com

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1therecord.media

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1infosecurity-magazine.com

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1cybernews.com

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1doabooks.org

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1jstor.org

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1msn.com

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1gigaom.com

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1thenextweb.com

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1pcmag.com

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1theindexproject.org

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1inc.com

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1entrepreneur.com

2,631^st place

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1time.com

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1glamsham.com

3,813^th place

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1cbsnews.com

108^th place

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1independent.co.uk

36^th place

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1delawareonline.com

4,565^th place

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1designrush.com

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1nypost.com

208^th place

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1mashable.com

561^st place

392^nd place

1newsweek.com

269^th place

201^st place

1contagious.com

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1rypl.io

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1duostaqueria.com

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1technical.ly

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1gkpb.com.br

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1reddit.com

1,082^nd place

764^th place

absolutegeeks.com

STAFF, GEEK (April 15, 2025). "Duolingo adds chess lessons to iPhone app: here's what to expect". Absolute Geeks. Retrieved April 16, 2025.

adweek.com

Morley, Olivia (April 5, 2024). "Duolingo's Masterminded Social Listening Tactics". www.adweek.com. Retrieved June 18, 2024.

amazon.com

aws.amazon.com

"Duolingo Case Study – DynamoDB". Amazon Web Services, Inc. 2016. Archived from the original on June 28, 2016. Retrieved December 23, 2019.

axios.com

Deto, Ryan (April 22, 2025). "Duolingo expands app with chess launch". Axios. Retrieved April 22, 2025.

bbc.com

McCarthy, James; Evans, Owain (October 24, 2023). "Welsh course to be 'paused' on language app Duolingo". Additional reporting by Dan Moffat. BBC. Archived from the original on February 10, 2024. Retrieved March 27, 2024.
Aitken, Catriona (October 30, 2023). "Duolingo: Language app boss to help Welsh language goal". BBC News. Archived from the original on April 4, 2024. Retrieved June 7, 2024.

bizjournals.com

Doughty, Nate (April 8, 2020). "Duolingo passes one million paid users, expands with new hires". Pittsburgh Business Times. Archived from the original on January 22, 2021. Retrieved December 12, 2020.

bloomberg.com

Gifford, Bill (December 2, 2022). "Can Duolingo Actually Teach You Spanish?". Bloomberg Businessweek. Archived from the original on December 2, 2022. Retrieved December 2, 2022.

businessinsider.com

Nolan, Beatrice (January 10, 2024). "Duolingo lays off workers as it leans on AI tools to carry out more tasks". Business Insider. Archived from the original on January 11, 2024. Retrieved January 11, 2024.

cartoonbrew.com

Lang, Jamie (October 5, 2022). "Duolingo Acquires Detroit-Based Design And Animation Studio Gunner". Cartoon Brew. Archived from the original on March 23, 2023. Retrieved July 16, 2023.

cbsnews.com

Bartos, Madeline (February 12, 2025). "Duolingo Owl is dead, company says - CBS Pittsburgh". CBS News. Retrieved February 14, 2025.

chinadaily.com.cn

Shijia, Ouyang (December 13, 2019). "Language-learning app Duolingo bullish on Chinese market". China Daily. Archived from the original on December 14, 2019. Retrieved December 14, 2019.

cmu.edu

Spice, Byron. "Press Release: Duolingo.com Users Will Translate Web As They Learn a New Language". Carnegie Mellon University. Archived from the original on August 26, 2012. Retrieved May 14, 2021.

cnbc.com

Higgins-Dunn, Noah (April 14, 2019). "If you are a 'Game of Thrones' fan, this app will teach you how to speak in High Valyrian". CNBC. Archived from the original on November 12, 2019. Retrieved May 23, 2022.
"2018 Disruptor 50: No. 35 Duolingo". CNBC. May 22, 2018. Archived from the original on November 5, 2018. Retrieved November 5, 2018.
"Duolingo: 2019 Disruptor 50 List". CNBC. May 15, 2019. Archived from the original on October 7, 2019. Retrieved September 4, 2019.

cnet.com

news.cnet.com

Farber, Dan (July 11, 2013). "Duolingo brings free language courses to the iPad". C net. Archived from the original on August 20, 2013. Retrieved February 21, 2014.

cnet.com

Gallaga, Omar; Cooper, Gael (February 14, 2025). "Duolingo Is Selling a Coffin for Dead Mascot Duo the Owl". CNET. Retrieved February 15, 2025.

cnn.com

Munoz, Juan Andres (October 15, 2013). "Duolingo 'incubator' aims to crowdsource language teaching". CNN. Archived from the original on April 18, 2022. Retrieved April 18, 2022.

edition.cnn.com

Korn, Jennifer (January 9, 2024). Thorbecke, Catherine (ed.). "Duolingo lays off staff as language learning app shifts toward AI". CNN. Contributed by Catherine Thorbecke. Archived from the original on January 11, 2024. Retrieved January 11, 2024.

contagious.com

Bajaj, Sunil (November 23, 2023). "How a 23-year-old graduate helped transform Duolingo's social media marketing". Contagious. Retrieved April 13, 2024.

cybernews.com

Naprys, Ernestas (November 15, 2023). "Hackers exposed 2.6 million Duolingo users, more available for scraping". Cybernews. Archived from the original on March 3, 2024. Retrieved June 6, 2024.

delawareonline.com

Cross, Greta. "Duolingo's make-believe mascot, Duo the Owl, duped his death". The News Journal. Retrieved February 25, 2025.

designrush.com

"Duolingo Resurrects Its Mascot After Viral Cybertruck Death". www.designrush.com. Retrieved February 25, 2025.

doabooks.org

directory.doabooks.org

Estigarribia, Bruno (2020). A Grammar of Paraguayan Guarani. London: UCL Press. p. 23. doi:10.14324/111.9781787352872. ISBN 978-1-78735-287-2. JSTOR j.ctv13xpscn.

doi.org

Shortt, Mitchell; Tilak, Shantanu; Kuznetcova, Irina; Martens, Bethany; Akinkuolie, Babatunde (March 4, 2023). "Gamification in mobile-assisted language learning: a systematic review of Duolingo literature from public release of 2012 to early 2020". Computer Assisted Language Learning. 36 (3): 517–554. doi:10.1080/09588221.2021.1933540. ISSN 0958-8221.
Fians, Guilherme (2021). Esperanto Revolutionaries and Geeks: Language Politics, Digital Media and the Making of an International Community. London and New York: Palgrave Macmillan. doi:10.1007/978-3-030-84230-7. ISBN 978-3-030-84229-1. S2CID 245721938. Archived from the original on October 31, 2022. Retrieved December 2, 2022.
Huynh, Duy; Zuo, Long; Iida, Hiroyuki (2016). "Analyzing Gamification of "Duolingo" with Focus on its Course Structure". Games and Learning Alliance. Lecture Notes in Computer Science. Vol. 10056. Springer, Cham. pp. 268–277. doi:10.1007/978-3-319-50182-6_24. ISBN 978-3319501819.
Yancey, Kevin P.; Settles, Burr (August 20, 2020). "A Sleeping, Recovering Bandit Algorithm for Optimizing Recurring Notifications" (PDF). Proceedings of the 26th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining. California, United States: Association for Computing Machinery. pp. 3008–3016. doi:10.1145/3394486.3403351. ISBN 978-1-4503-7998-4.
Rachels, Jason R.; Rockinson-Szapkiw, Amanda J. (2018). "The effects of a mobile gamification app on elementary students' Spanish achievement and self-efficacy". Computer Assisted Language Learning. 31 (1–2). Routledge: 72–89. doi:10.1080/09588221.2017.1382536. S2CID 67064098.
Loof, Esther De; Ergo, Kate; Naert, Lien; Janssens, Clio; Talsma, Durk; Opstal, Filip Van; Verguts, Tom (January 2, 2018). "Signed reward prediction errors drive declarative learning". PLOS ONE. 13 (1): e0189212. Bibcode:2018PLoSO..1389212D. doi:10.1371/journal.pone.0189212. ISSN 1932-6203. PMC 5749691. PMID 29293493.
Benoît, Christian; Grice, Martine; Hazan, Valérie (1996). "The SUS test: A method for the assessment of text-to-speech synthesis intelligibility using Semantically Unpredictable Sentences". Speech Communication. 18 (4): 381–392. doi:10.1016/0167-6393(96)00026-X.
Jiang, Xiangying; Rollinson, Joseph; Plonsky, Luke; Gustafson, Erin; Pajak, Bozena (January 11, 2022). "Evaluating the reading and listening outcomes of beginning-level Duolingo courses". Foreign Language Annals. 54 (4): 974–1002. doi:10.1111/flan.12600. ISSN 0015-718X. S2CID 245892888.
Estigarribia, Bruno (2020). A Grammar of Paraguayan Guarani. London: UCL Press. p. 23. doi:10.14324/111.9781787352872. ISBN 978-1-78735-287-2. JSTOR j.ctv13xpscn.

duolingo-papers.s3.amazonaws.com

Jiang, Xiangying; Chen, Haoyu; Portnof, Lucy; Gustafson, Erin; Rollinson, Joseph; Plonsky, Luke; Pajak, Bozena (November 11, 2021). "Finishing half of B1 on Duolingo comparable to five university semesters in reading and listening" (PDF). Duolingo. DRR-21-03. Archived (PDF) from the original on June 2, 2024.
Rodríguez-Fuentes, Rodrigo A.; Swatek, Aleksandra (December 14, 2023). Ariel, Robert; Jiang, Xiangying (eds.). "A Comparison Between Classroom and MALL Instruction with Duolingo: Learning English at the A2 CEFR Level" (PDF). Amazon Web Services.
González-Fernández, Beatriz (November 30, 2023). "The effectiveness of Duolingo vs. classroom instruction on Spanish speakers' L2 English proficiency and lexical development" (PDF). Amazon Web Services. Archived (PDF) from the original on June 2, 2024.

duolingo.com

blog.duolingo.com

"Migrating Duolingo's Android app to 100% Kotlin". blog.duolingo.com. April 6, 2020. Archived from the original on December 23, 2020. Retrieved September 17, 2020.
Duolingo Team (October 26, 2022). "Duolingo Math makes learning easy as pi(e)". Duolingo. Archived from the original on October 27, 2022. Retrieved October 27, 2022.
"Dear Duolingo: Why is spaced repetition so important for learning?". Duolingo Blog. December 26, 2023. Retrieved August 2, 2024.
"Ending & honoring our volunteer Contributor program". Duolingo Blog. March 10, 2021. Archived from the original on March 10, 2021. Retrieved April 7, 2022.
"Introducing Duolingo Max, a learning experience powered by GPT-4". Duolingo Blog. March 14, 2023. Retrieved April 24, 2024.
"One app to school them all: the expanded Duolingo 🎶 ➗ 🇲🇽". Duolingo Blog. October 11, 2023. Archived from the original on October 11, 2023. Retrieved October 11, 2023.
"Duolingo ABC: Unlocking the magic of reading". Duolingo Blog. August 26, 2020. Archived from the original on May 18, 2022. Retrieved May 31, 2022.
Pajak, Bozena; Tsai, Karin (December 11, 2019). "How we've improved the Duolingo learning experience this year (and a sneak peek toward 2020!)". Duolingo Blog. Archived from the original on July 30, 2021. Retrieved August 26, 2021.
"Become a Duolingo character with our new Avatars!". Duolingo Blog. July 19, 2023. Retrieved September 8, 2024.
"Duolingo is bringing language, math, and music under one roof!". Duolingo Blog. October 11, 2023. Retrieved April 25, 2024.
"Friend Streak: a new way to stay motivated together". Duolingo Blog. August 5, 2024. Retrieved September 8, 2024.
Yang, Kevin (October 23, 2024). "The Duolingo Score Tracks Your Learning Progress". Duolingo Blog. Retrieved January 28, 2025.
"Building character: How a cast of characters can help you learn a language". Duolingo Blog. November 10, 2020. Retrieved August 24, 2024.
"How Zari, Bea, Lily, Lucy, and Lin came to life". Duolingo Blog. March 8, 2022. Retrieved September 26, 2024. Archived 11 March 2024 at the Wayback Machine at Duolingo Blog

investors.duolingo.com

"Duolingo Reports 45% Revenue Growth and Record Profitability in First Quarter 2024; Raises Full Year Guidance".
"duolingo reports 45% revenue growth and record profitability in first quarter 2024; raises full year guidance".
Ahn, Luis von (May 12, 2022). "Duol shareholder letter 2022" (DOC). (anonymous). Archived from the original on May 12, 2022. Retrieved May 28, 2022.
"Duolingo shareholder letter 2022". Archived from the original on May 12, 2022. Retrieved May 28, 2022.
"Duolingo Reports 62% DAU Growth, 42% Revenue Growth, and Increased Profitability in First Quarter 2023; Raises Full Year Guidance". Archived from the original on May 31, 2023. Retrieved May 31, 2023.

support.duolingo.com

"What is Super Duolingo?". Duolingo Help Center. Archived from the original on September 29, 2023. Retrieved July 16, 2023.
"Forum Announcement + FAQ". Duolingo. Archived from the original on March 4, 2024. Retrieved June 6, 2024.
"How do I report a problem with a sentence or translation?". Duolingo. Archived from the original on September 23, 2023. Retrieved August 12, 2024.

duolingo.com

"Super Duolingo". Super Duolingo homepage. Retrieved November 22, 2024.
"Duolingo Really Works - Learn more about how Duolingo works for learners". Duolingo. Archived from the original on May 30, 2024. Retrieved June 6, 2024.
Luis. "Duolingo turns two today!". Archived from the original on February 19, 2018. Retrieved November 21, 2014.

making.duolingo.com

"Real World Swift – Making Duolingo Blog". making.duolingo.com. January 7, 2015. Archived from the original on June 6, 2019. Retrieved October 22, 2018.
"Rewriting Duolingo's engine in Scala – Making Duolingo Blog". making.duolingo.com. January 31, 2017. Archived from the original on August 4, 2019. Retrieved February 1, 2017.

schools.duolingo.com

"Duolingo for Schools". schools.duolingo.com. Retrieved September 8, 2024.

research.duolingo.com

Yancey, Kevin P.; Settles, Burr (August 20, 2020). "A Sleeping, Recovering Bandit Algorithm for Optimizing Recurring Notifications" (PDF). Proceedings of the 26th ACM SIGKDD International Conference on Knowledge Discovery & Data Mining. California, United States: Association for Computing Machinery. pp. 3008–3016. doi:10.1145/3394486.3403351. ISBN 978-1-4503-7998-4.

englishtest.duolingo.com

"Duolingo English Test". Duolingo English Test. Retrieved February 15, 2025.

design.duolingo.com

"Brand Guidelines - Duolingo". design.duolingo.com. Retrieved February 12, 2025.

careers.duolingo.com

"Duolingo Careers". careers.duolingo.com. Retrieved November 3, 2024.

duolingodata.com

"Unofficial Duolingo Course Data". duolingodata.com. Retrieved January 23, 2025.
"Unofficial Duolingo Course Data". duolingodata.com. Retrieved February 4, 2025.

duoplanet.com

Matt (February 20, 2023). "The Complete List Of EVERY Duolingo Language". Duoplanet. Archived from the original on September 21, 2022. Retrieved September 21, 2022.

duostaqueria.com

"Duo's Taqueria". Duo's Taqueria. Retrieved August 24, 2024.

entrepreneur.com

"Top Company Cultures of 2018". Entrepreneur. Archived from the original on February 4, 2023. Retrieved August 1, 2019.

fastcompany.com

Schwartz, Ariel (December 13, 2011). "How The Creator of CAPTCHA Will Translate The Entire Internet". Fast Company. Archived from the original on January 31, 2025. Retrieved February 9, 2025.
"The World's Most Innovative Companies 2013: Education Honorees". Fast Company. Archived from the original on July 23, 2019. Retrieved December 14, 2019.
"The World's Most Innovative Companies 2017: Education Honorees". Fast Company. Archived from the original on January 10, 2020. Retrieved December 14, 2019.
"The World's Most Innovative Companies 2017: Social Media Honorees". Fast Company. Archived from the original on January 10, 2020. Retrieved December 14, 2019.
Budds, Diana (September 5, 2024). "Inside Duolingo's stunning new NYC office, where employees get to choose where and how they work". Fast Company. Retrieved September 5, 2024.

fool.com

"Duolingo (DUOL) Q2 2024 Earnings Call Transcript". The Motley Fool. August 7, 2024. Retrieved August 9, 2024.

forbes.com

Olson, Parmy. "Crowdsourcing Capitalists: How Duolingo's Founders Offered Free Education To Millions". Forbes. Archived from the original on January 27, 2014. Retrieved August 26, 2017.
Elaine, Ramirez. "Duolingo Is Launching A Korean Course To Cash In On Asia's Booming Language Market". Forbes. Archived from the original on December 21, 2018. Retrieved October 11, 2017.
Olson, Parmy (January 22, 2014). "Crowdsourcing Capitalists: How Duolingo's Founders Offered Free Education To Millions". Forbes. Archived from the original on January 27, 2014. Retrieved December 22, 2015.
Adams, Susan. "Game of Tongues: How Duolingo Built A $700 Million Business With Its Addictive Language-Learning App". Forbes. Archived from the original on July 23, 2019. Retrieved December 14, 2019.
Kelly, Jack. "It's Time To Get Concerned As More Companies Replace Workers With AI". Forbes. Retrieved May 7, 2025.
Feldman, Amy. "Next Billion-Dollar Startups 2019". Forbes. Archived from the original on July 20, 2019. Retrieved July 20, 2019.
Booth, Callum (February 12, 2025). "Duolingo Owl Dies—But 'The Dead Internet Theory' Lives On". Forbes. Retrieved February 14, 2025.

gigaom.com

Hockenson, Lauren (December 17, 2013). "Duolingo snags iPhone App of the Year". Gigaom. Archived from the original on November 12, 2020. Retrieved February 21, 2014.

gkpb.com.br

Ferreira, Matheus (May 19, 2025). "Duolingo cria café na Liberdade para anunciar cursos de japonês e coreano na plataforma". KGPB (in Brazilian Portuguese). Archived from the original on May 19, 2025. Retrieved June 9, 2025.

glamsham.com

T., Puja; Ghadashi, S.; Sethi, N. N. (June 9, 2023). "Duolingo wins Apple Design Award for innovation in design". Glamsham. Archived from the original on October 4, 2023. Retrieved June 7, 2024.

happilyevertravels.com

Brockbank, Dayna (October 5, 2020). "Everything You Need to Know About Duolingo Stories • Happily Ever Travels". Happily Ever Travels. Archived from the original on October 7, 2021. Retrieved August 26, 2021.

harvard.edu

ui.adsabs.harvard.edu

Loof, Esther De; Ergo, Kate; Naert, Lien; Janssens, Clio; Talsma, Durk; Opstal, Filip Van; Verguts, Tom (January 2, 2018). "Signed reward prediction errors drive declarative learning". PLOS ONE. 13 (1): e0189212. Bibcode:2018PLoSO..1389212D. doi:10.1371/journal.pone.0189212. ISSN 1932-6203. PMC 5749691. PMID 29293493.

hindustantimes.com

Lal, Preeti Verma (March 10, 2024). "Study Abroad: All About Duolingo English Test accepted by over 5,000 programs worldwide". Hindustan Times. Archived from the original on June 6, 2024. Retrieved June 7, 2024.

inc.com

"Duolingo". Inc.com. Archived from the original on August 1, 2019. Retrieved August 1, 2019.

independent.co.uk

"Duo, the Duolingo owl, has 'died' - leaving users in mourning (and somewhat relieved)". The Independent. February 13, 2025. Retrieved February 14, 2025.

infosecurity-magazine.com

Mascellino, Alessandro (August 24, 2023). "Data of 2.6M Duolingo Users Leaked on Hacking Forum". Infosecurity Magazine. Archived from the original on February 21, 2024. Retrieved June 6, 2024.

jstor.org

Estigarribia, Bruno (2020). A Grammar of Paraguayan Guarani. London: UCL Press. p. 23. doi:10.14324/111.9781787352872. ISBN 978-1-78735-287-2. JSTOR j.ctv13xpscn.

kotaku.com

Guthrie, Robert (June 5, 2023). "Duolingo Is An App For Language-Learning, So Why Is It Plagued With Cheaters?". Kotaku. Archived from the original on June 6, 2023. Retrieved June 6, 2023.

livemint.com

lifestyle.livemint.com

Janardhan, Arun (May 27, 2022). "Duolingo's Luis von Ahn believes in the power of language". Mintlounge. Illustration by Priya Kuriyan. The beginning. Archived from the original on May 27, 2022. Retrieved May 28, 2022.

marketwatch.com

Sumagaysay, Levi. "Duolingo, the fast-growing language-learning app, files for IPO" (IPO Report). MarketWatch. Archived from the original on June 28, 2021. Retrieved July 5, 2021.

mashable.com

Anderson, Sage (March 27, 2019). "The Duolingo owl is out for vengeance in these threatening memes". Mashable. Archived from the original on January 4, 2021. Retrieved June 7, 2019.

msn.com

"Duolingo Flooded by Pledges to Quit the App Following Decision to Replace Contractors With AI: 'That Owl is Dead to Me'". www.msn.com. Retrieved May 7, 2025.

nasdaq.com

"Duolingo Announces Record Bookings in First Quarter 2022 and Raises Full Year Guidance". Archived from the original on May 25, 2022. Retrieved May 25, 2022.

nbcnews.com

"Duolingo creator to be inducted into Inventors Hall of Fame" (Video). NBC News. October 27, 2023. Archived from the original on November 2, 2023. Retrieved November 2, 2023.
Goggin, Ben (August 26, 2022). "Duolingo's redesign has some fans up in arms. Its CEO says it's not turning back". NBC News. Archived from the original on August 26, 2022. Retrieved August 26, 2022.
Hamedy, Saba (February 12, 2025). "Duolingo 'killed' off its mascot — and somehow captivated the internet". NBC News. Retrieved February 15, 2025.

newscientist.com

Giles, Jim (January 11, 2012). "Learn a language, translate the web". New Scientist. Archived from the original on April 28, 2015. Retrieved August 26, 2017.

newsweek.com

Gibbs, Alice (December 5, 2023). "Threatening note from the Duolingo owl leaves internet in stitches". Newsweek. Retrieved June 25, 2024.

nih.gov

ncbi.nlm.nih.gov

Loof, Esther De; Ergo, Kate; Naert, Lien; Janssens, Clio; Talsma, Durk; Opstal, Filip Van; Verguts, Tom (January 2, 2018). "Signed reward prediction errors drive declarative learning". PLOS ONE. 13 (1): e0189212. Bibcode:2018PLoSO..1389212D. doi:10.1371/journal.pone.0189212. ISSN 1932-6203. PMC 5749691. PMID 29293493.

pubmed.ncbi.nlm.nih.gov

Loof, Esther De; Ergo, Kate; Naert, Lien; Janssens, Clio; Talsma, Durk; Opstal, Filip Van; Verguts, Tom (January 2, 2018). "Signed reward prediction errors drive declarative learning". PLOS ONE. 13 (1): e0189212. Bibcode:2018PLoSO..1389212D. doi:10.1371/journal.pone.0189212. ISSN 1932-6203. PMC 5749691. PMID 29293493.

nsf.gov

Ahn, Luis von (2017). "Online Education as a Vehicle for Human Computation". U.S. National Science Foundation. Archived from the original on March 4, 2016. Retrieved April 6, 2018.

beta.nsf.gov

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