G2 Vendor Directory

Plagiarism Checker

23

Products

15K

Total reviews

4.5

Avg. rating

Grammarly by Superhuman leads the Plagiarism Checker category with a 4.7 rating from 14,090 reviews. GPTZero has the strongest momentum in the category, up -100.0% quarter-over-quarter.

LLM citations

Monthly citations by AI answer engines for the top products in Plagiarism Checker.

LLM citations · Plagiarism Checker

Source: G2 review data

Key stats

Grammarly

GPTZero

Small Business

Category trends

How the Plagiarism Checker market is moving, from G2 review and Grid data.

Which products are most adopted?
1
Grammarly2,610 2
Feedback Studio125 3
GPTZero61 4
PlagiarismCheck.org47 5
Quillbot Paraphraser43
Which products are reviewers switching to?
1
Grammarly15 2
Trinka3 3
ProWritingAid3 4
Plagiarism Checker X2 5
Quillbot Paraphraser1
Which products do enterprises choose?
1
Grammarly331 2
Feedback Studio32 3
Packback10 4
AI Image Detector9 5
iLoveNote5
Which products do mid-market buyers choose?
1
Grammarly765 2
Feedback Studio59 3
GPTZero22 4
PlagiarismCheck.org19 5
Quillbot Paraphraser14
Which products do small businesses choose?
1
Grammarly1,483 2
WriterZen39 3
GPTZero35 4
Feedback Studio33 5
PlagiarismCheck.org25

Fastest growing

Ranked by G2 Momentum score.

1

GPTZero

by GPTZero · 101 reviews

4.3
2

Grammarly

by Superhuman · 14,090 reviews

4.7
3

AI Image Detector

by Copyleaks · 41 reviews

4.5

All products

Ranked by G2 Grid position.

1

Grammarly

by Superhuman · 14,090 reviews

4.7
2

GPTZero

by GPTZero · 101 reviews

4.3
3

Packback

by Packback · 63 reviews

4.5
4

AI Image Detector

by Copyleaks · 41 reviews

4.5
5

Quillbot Paraphraser

by QuillBot · 43 reviews

4.5

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