I'm a University Professor looking for a better way to grade papers online. What's the best annotation software?

Snapshot as of Mar 12, 2026. Sign up free to see the latest daily data.

Total mentions

404

Unique brands

Avg brands/response

10.9

Top domain

gptzero.me

Top brand

Gradescope

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Full brand & citation dataResponse trends over timeTrack your brand's ranking

Prompt visibility

Prompt visibility score combining mention rate and average position - 0-100 scale.

Top brand - Visibility score

Gradescope57.8%

CoGrader27.2%

Perusall23.7%

Responses

Counts only on free plans

Total responses

Total mentions

404

Total citations

1,077

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Citation breakdowns

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Total mentions

404

Unique brands

Avg brands/response

10.9

Top domain

gptzero.me

Top brand

Gradescope

Unlock full data

Full brand & citation dataResponse trends over timeTrack your brand's ranking

Prompt visibility

Prompt visibility score combining mention rate and average position - 0-100 scale.

Top brand - Visibility score

Gradescope57.8%

CoGrader27.2%

Perusall23.7%

Responses

Counts only on free plans

Total responses

Total mentions

404

Total citations

1,077

Related prompts

Other prompts with similar intent

Top brand - Mention rate

CoGrader77.8%

Perusall77.8%

Gradescope66.7%

Canvas66.7%

GPTZero55.6%

Top brand - Avg. position

Gradescope1.4

CoGrader3.2

GPTZero3.4

Canvas4.7

Perusall5.4

Top cited URLs

gptzero.me

2.2%

apporto.com

2.2%

culanth.org

1.9%

en.wikipedia.org

1.8%

tutorai.me

1.7%