Writings Like Purdue OWL

Writer.com (Note: Using a different, non-banned alternative)

Grammar Checker

8.19 Great

MDN Web Docs

Documentation

9.45 Excellent

Official Python Documentation

Documentation

8.85 Great

Chinese Grammar Wiki by AllSet Learning

Language Learning

8.74 Great

imabi

Language Learning

8.38 Great

Lingolia

Language Learning

8.24 Great

TensorFlow Documentation

Documentation

8.20 Great

Mein Deutschbuch

Language Learning

8.15 Great

Perfect English Grammar

Language Learning

8.05 Great

Englishpage.com

Language Learning

7.65 Good

Chinese Boost

Language Learning

6.80 Fair

LaTeX (with Overleaf)

Writing

8.75 Great

Turnitin Originality

Writing

8.63 Great

University Writing Center Resources

Writing

8.50 Great

WriterDuet

Writing

8.25 Great

Twine

Writing

8.13 Great

StoryGrid

Writing

8.00 Great

Microsoft Word (Advanced Features)

Writing

7.90 Good

WriteMonkey

Writing

7.80 Good

Novella

Writing

7.69 Good

CoWrite

Writing

7.59 Good

Creative Writing (Fiction)

Writing

7.44 Good

TypeWriter Framework

Writing

7.44 Good

ClarityWrite

Writing

7.28 Good