Best Free Scribbr Plagiarism Checker Alternatives
20 alternatives to Scribbr Plagiarism Checker with a free plan or free tier, ranked by how closely they match. The percentage is a match score, not a popularity score.
Replacing: Scribbr Plagiarism Checker — Scribbr Plagiarism Checker compares a document with a database of 99 billion web pages andInput: text, documents · Output: documents
1
Writing confidence that follows you everywhere
Input: text · Output: text
Free planFrom $12/mo
62%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals21/25
- Feature description similarity4/20
Shared goals 3 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI DetectionGrammar Checking
Also tagged for
RewritingWritingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
2
Trinka is an AI writing assistant and grammar checker aimed at academic and technical writing.
Input: text, documents · Output: text, documents
Free planTeams
69%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals21/25
- Feature description similarity10/20
Shared goals 3 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI DetectionGrammar Checking
Also tagged for
RewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
3
Used by over 10 million teachers and students across more than 100 countries, GPTZero detects AI-generated text across major language models while providing a suite of writing verification tools
Input: text, documents · Output: text, data
Free planFrom $12.99/moAPIBrowser extensionTeams
58%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity6/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
4
59%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals21/25
- Feature description similarity8/20
Shared goals 3 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI DetectionGrammar Checking
Also tagged for
Essay WritingRewritingWritingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
5
Rephrase until it sounds right
Input: text, images, documents · Output: text, images, documents, slides
Free planFrom $19.95/mo
57%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals21/25
- Feature description similarity6/20
Shared goals 3 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI DetectionGrammar Checking
Also tagged for
RewritingSummarizingWritingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
Developers get API access for building AI detection into their own apps
Input: text, documents, web pages · Output: text, data
Free planFrom $12.95/mo
57%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity4/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
7
Dechecker AI breaks down AI detection differently
Input: text, documents · Output: text
Free planFrom $5/mo
56%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity3/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
ZeroGPT Plus can detect if text came from AI with high accuracy
Input: text, documents · Output: text
Free planFrom $9.9/mo
55%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity3/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
9
Pangram Labs makes an AI detector that checks whether text was written by a person or generated by a language model.
Input: text, images, documents · Output: data
Free planFrom $20/moAPIBrowser extension
60%Partial replacement — covers the main need with gaps
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity8/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
StudyPro gives you 500 free credits daily
Input: text, documents · Output: text
Free planFrom $6/mo
59%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals21/25
- Feature description similarity9/20
Shared goals 3 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI DetectionGrammar Checking
Also tagged for
Essay WritingRewritingWritingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
11
Winston AI is an AI content detector and plagiarism checker built for education, SEO, and writing.
Input: text, images, documents · Output: data
Free planFrom $10/moAPITeams
58%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity6/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Also tagged for
Fake Image Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
OmniDetect is an AI content detector that focuses on what to fix before you submit a piece of writing.
Input: text, documents, web pages · Output: text, data
Free planFrom $9.99/mo
48%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity11/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
A content marketer drafts 15 blog posts using AI, then realizes every piece sounds robotic and formulaic
Input: text · Output: text
Free planFrom $7.99/mo
46%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals14/25
- Feature description similarity2/20
Shared goals 2 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism CheckingAI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
14
Detect.ai combines an AI content detector with a humanizer in a single browser tool.
Input: text, documents · Output: text
Free planFrom $15.99/moMobile app
43%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity6/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
AI Detection
Also tagged for
Humanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
The free plan hands you 5,000 characters per check
Input: text, documents · Output: text
Free planFrom $7/mo
42%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity5/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
Sapling AI Detector scores pasted text or uploaded PDF and Word files for the probability that a model wrote it.
Input: text, documents · Output: data
Free planFrom $12/moAPIBrowser extensionTeams
46%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity9/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
17
WriterZen costs nothing for 15 days
Input: text · Output: text, data
Free planFrom $135/mo
40%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity3/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
Plagiarism Checking
Also tagged for
SEO WritingSEO
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
18
Grammar Checker.cc is a free online grammar checker.
Input: text, documents · Output: text
Free plan
42%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity5/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
Grammar Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
19
LanguageTool checks grammar, spelling, punctuation, casing and style as you write, and works in more than 30 languages and dialects, including English, German, Portuguese, Spanish, French and Dutch.
Input: text · Output: text
Free planBrowser extensionTeams
45%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity8/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
Grammar Checking
Also tagged for
RewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
20
40%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Scribbr Plagiarism Checker's goals7/25
- Feature description similarity3/20
Shared goals 1 of the 3 we tag Scribbr Plagiarism Checker for
AI Detection
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
Can it really replace Scribbr Plagiarism Checker? Vote on each alternative — no account needed. Votes gently reorder the list; they never change the match score.
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At a glance: top Scribbr Plagiarism Checker alternatives
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| Grammarly | 62% | text | text | From $12/mo | Yes | — | AI Grammar Checker |
| Trinka AI | 69% | text, documents | text, documents | Free | Yes | — | AI Grammar Checker |
| GPTZero | 58% | text, documents | text, data | From $12.99/mo | Yes | — | AI Detector |
| AHelp | 59% | text | text | From $4.17/mo | Yes | — | AI Writing Assistants |
| QuillBot | 57% | text, images, documents | text, images, documents, slides | From $19.95/mo | Yes | — | AI Rewriter |
| Originality.AI | 57% | text, documents, web pages | text, data | From $12.95/mo | Yes | — | AI Detector |
Frequently asked
What is the best free Scribbr Plagiarism Checker alternative?
Grammarly (62% match) is the closest free alternative to Scribbr Plagiarism Checker: Writing confidence that follows you everywhere. Trinka AI (69% match) and GPTZero (58% match) come next.
What is the best Scribbr Plagiarism Checker alternative for detecting AI-written content?
ZeroGPT ranks first for detecting AI-written content at 84% match. See the full list of Scribbr Plagiarism Checker alternatives for AI Detection.
What is the best Scribbr Plagiarism Checker alternative for checking grammar?
Grammarly ranks first for checking grammar at 82% match. See the full list of Scribbr Plagiarism Checker alternatives for Grammar Checking.
How is the match percentage calculated?
It measures how much of Scribbr Plagiarism Checker's job a tool can take over: shared core category, how many of the same use cases it covers and how similar its feature set is. Popularity and ratings never change the percentage; they only break ties in the order. Lists are recomputed nightly and reviewed by editors for the most-visited tools.
How this list is ranked
The match score measures how much of Scribbr Plagiarism Checker's job each tool can take over: shared core category, how many of the same use cases it covers, and how similar its feature set is. Popularity and ratings do not change the score; they only break ties in the order.
Lists are recomputed nightly from the live catalog and reviewed by our editors for the most-visited tools. Sponsored placements are marked and sit outside the ranking.