Duolingo FR from EN versions:

It's too difficult to identify all versions of this huge course!

Tree Versions:
v0: 2011-06-29, ? (beta)
v0: 2012-06-19, ? (beta)
v1: 2012-09-06
v?: ?, 78 Skills (78 Different Lessons)
v?: ?, 96 Skills (96 Different Lessons)
v?: ?, 142 Skills (142 Different Lessons)
v14: 158 Skills (158 Different Lessons)
v16: 172 Skills (172 Different Lessons)
v18: 174 Skills (174 Different Lessons)
v19: 199 Skills (199 Different Lessons)
v?: ?, 218 Skills (218 Different Lessons, Stories?)
v?: ?, 2021-03-27: 225 Skills (225 Different Lessons, Stories?)
v?: ?, 2021-07-05: 247 Skills (247 Different Lessons, Stories?)

Path Versions, all CEFR:
1.0: 2022-09-04: ? Skills and 288 stories = xx Different Lessons (CEFR B2) (199 Units)
?  : 2022-10-23: ? Skills and 288 stories = xx Different Lessons (CEFR B2) (197 Units)
?  : 2022-11-29: ? Skills and 147 stories = xx Different Lessons (CEFR B2) (174 Units)
?  : 2022-12-08: ? Skills and 288 stories = xx Different Lessons (CEFR B2) (209 Units)
?  : 2023-03-09: ? Skills and 318 stories = xx Different Lessons (CEFR B2) (202 Units)
?  : 2023-03-10: ? Skills and 318 stories = xx Different Lessons (CEFR B2) (204 Units)
?  : 2023-03-14: ? Skills and 348 stories = xx Different Lessons (CEFR B2) (219 Units)
?  : 2023-07-12: ? Skills and 408 stories = xx Different Lessons (CEFR B2) (254 Units)
?  : 2023-09-10: 263 Skills and 408 stories = 671 Different Lessons (CEFR B2) (194 Units)
?  : 2023-09-10: 263 Skills and 408 stories = 671 Different Lessons (CEFR B2) (167 Units)
?  : 2023-12-06: 165 Skills and 408 stories = 573 Different Lessons (CEFR B2) (268 Units)
5.0: 2023-12-15: 302 Skills and 405 stories = 707 Different Lessons (CEFR B2) (311 Units)


tree_fr_en_v3_experiment
tree_fr_en_v4_experiment
tree_fr_en_v6_experiment
tree_fr_en_v7_experiment
tree_fr_en_v8_experiment
tree_fr_en_v9_experiment
tree_fr_en_v12_experiment
tree_fr_en_v13_experiment
tree_fr_en_v14_experiment
tree_fr_en_v15_experiment
tree_fr_en_v16_experiment
tree_fr_en_v17_experiment
tree_fr_en_v18_experiment
tree_fr_en_v19_experiment
tree_fr_en_v20_experiment
tree_fr_en_v21_experiment
tree_fr_en_v30_experiment
tree_fr_en_v31_experiment
tree_fr_en_v32_experiment
tree_fr_en_v33_experiment
tree_fr_en_v34_experiment
tree_fr_en_v35_experiment
tree_fr_en_v36_experiment
tree_fr_en_v40_experiment
tree_fr_en_v41_experiment
tree_fr_en_v42_experiment
tree_fr_en_v43_experiment
tree_fr_en_v44_experiment
tree_fr_en_v45_experiment
tree_fr_en_v46_experiment
tree_fr_en_v47_experiment
tree_fr_en_v49_experiment
tree_fr_en_v50_experiment
tree_fr_en_v51_experiment
tree_fr_en_b2_1_new_launch
tree_fr_en_b2_2_existing
tree_fr_en_b2_2_new
tree_fr_en_b2_3_b2_4_existing
tree_fr_en_b2_3_b2_4_new

https://liuch.github.io/duolingo_courses_overview/
https://duolingo.fandom.com/wiki/Course_list
https://duolingodata.com/
https://duolingodata.com/oldtable.html
https://ardslot.com/duolingocrowns.html

Edited by Mat!/Ozone, 2024-05-02.