Introducing Duolingo, The world's most popular language learning platform To Learn Any Language For Free. With more than 300 million learners, Duolingo has the world's largest collection of language-learning data at its fingertips.
World's Best Platform To Learn Any Language For Free

Duolingo is a platform that includes a language-learning website and app, as well as a digital language proficiency assessment exam. The app and the website are free. Duolingo also offers a premium service for a fee. As of August 2019 the language-learning website and app offer 90 different language courses in 22 languages. The app has over 300 million registered users across the world.

All language-learning features in Duolingo are free of charge, but it uses periodic advertising in both its mobile and web browser applications,[31][32] which users can remove by paying a subscription fee. It originally employed a crowd sourced business model, where the content came from organizations (such as CNN and BuzzFeed) that paid Duolingo to translate it.

Duolingo is funded by Union Square Venture Partners ($3.3 million in 2011), New Enterprise Associates ($15 million), Kleiner Perkins Caufield & Byers ($20 million), Google Capital ($45 million), Ashton Kutcher's A-Grade Investments, and Tim Ferriss.

Learning with Duolingo is fun and addictive. Earn points for correct answers, race against the clock, and level up.

Duolingo provides "Duolingo for Schools" with features designed to allow teachers to track their students. In 2012, an effectiveness study concluded that Duolingo usage for Spanish study was more effective than classroom language learning alone, but that it was less effective for advanced language learners. One proposed reason for this is that the direct-translation method that Duolingo primarily uses is more applicable to simple words and phrases than to complex ones; simpler ones can be translated in a more exact manner from one language to another and thus are more conducive to Duolingo's direct-translation method.

List of courses taken by users on Duolingo so far:

1 English Spanish
2 Spanish English
3 French English
4 English Portuguese
5 German English
6 Japanese English
7 English Russian
8 Italian English
9 English Arabic
10 English French
11 French Spanish
12 Korean English
13 Chinese English
14 Russian English
15 English Turkish
16 Spanish Portuguese
17 English Chinese
18 Italian Spanish
19 English German
20 English Vietnamese
21 Portuguese English
22 English Italian
23 Portuguese Spanish
24 English Hindi
25 German Spanish
26 English Polish
27 French Portuguese
28 Turkish English
29 Spanish French
30 Dutch English
31 English Indonesian
32 English Japanese
33 Swedish English
34 Spanish German
35 Greek English
36 High Valyrian English
37 Hindi English
38 English Romanian
39 Irish English
40 German Russian
41 Polish English
42 English Dutch
43 Hebrew English
44 Norwegian (Bokmål) English
45 English Czech
46 French German
47 Italian Portuguese
48 German Portuguese
49 English Hungarian
50 French Arabic
51 Catalan Spanish
52 Russian Spanish
53 English Korean
54 French Russian
55 Vietnamese English
56 Spanish Russian
57 Italian French
58 German French
59 Danish English
60 English Ukrainian
61 German Turkish
62 Hawaiian English
63 Klingon English
64 Romanian English
65 Arabic English
66 Spanish Chinese
67 Czech English
68 French Italian
69 German Arabic
70 Swahili English
71 Welsh English
72 English Thai
73 Indonesian English
74 Hungarian English
75 Ukrainian English
76 German Italian
77 Esperanto English
78 Guarani (Jopará) Spanish
79 Esperanto Spanish
80 Navajo English
81 Russian Turkish
82 Portuguese French
83 English Greek
84 Esperanto Portuguese
85 Swedish Arabic
86 Japanese Chinese
87 Spanish Italian
88 Korean Chinese
89 French Chinese
90 Italian Chinese
91 Swedish Spanish
92 Swedish Russian
93 English Bengali
94 French Turkish
95 English Tamil
96 Spanish Arabic
97 German Chinese
98 German Dutch
99 English Tagalog
100 English Punjabi (Gurmukhi)
101 English Telugu