Best Smodin Alternatives for Plagiarism Checking
21 AI tools that can replace Smodin for checking for plagiarism, ranked by how closely they match. The percentage is a match score, not a popularity score.
Replacing: Smodin — Smodin is an AI writing toolkit that puts an AI content detector, an AI humanizer, a plagiInput: text, documents · Output: text, data
1
Scribbr Plagiarism Checker compares a document with a database of 99 billion web pages and 8 million publications and shows where the text matches existing sources.
Input: text, documents · Output: documents
Free plan
80%Strong alternative
00
How the score adds up
- Built for Plagiarism Checking (its core category)70/70
- Shares Smodin's other goals5/10
- Feature description similarity6/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionGrammar CheckingPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
2
Turnitin is an academic integrity suite that schools, universities, and research organizations use to verify originality and deal with AI-written text.
Input: text, documents · Output: data
Teams
77%Strong alternative
00
How the score adds up
- Built for Plagiarism Checking (its core category)70/70
- Shares Smodin's other goals3/10
- Feature description similarity4/20
Shared goals 2 of the 6 we tag Smodin for
AI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
3
Rephrase until it sounds right
Input: text, images, documents · Output: text, images, documents, slides
Free planFrom $19.95/mo
64%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals9/10
- Feature description similarity13/20
Shared goals 6 of the 6 we tag Smodin for
WritingAI DetectionGrammar CheckingPlagiarism CheckingRewritingHumanizing Text
Also tagged for
Summarizing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
4
Writing confidence that follows you everywhere
Input: text · Output: text
Free planFrom $12/mo
63%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals9/10
- Feature description similarity12/20
Shared goals 6 of the 6 we tag Smodin for
WritingAI DetectionGrammar CheckingPlagiarism CheckingRewritingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
5
63%Partial replacement — covers the main need with gaps · same core category as Smodin
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals10/10
- Feature description similarity11/20
Shared goals 6 of the 6 we tag Smodin for
WritingAI DetectionGrammar CheckingPlagiarism CheckingRewritingHumanizing Text
Also tagged for
Essay Writing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
Phrasly is an AI writing workspace built around a humanizer that rewrites machine-generated text so it reads like natural human writing, without watermarks.
Input: text · Output: text
Free trialFrom $9.8/mo
67%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals5/10
- Feature description similarity20/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
7
Trinka is an AI writing assistant and grammar checker aimed at academic and technical writing.
Input: text, documents · Output: text, documents
Free planTeams
64%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals8/10
- Feature description similarity14/20
Shared goals 5 of the 6 we tag Smodin for
WritingAI DetectionGrammar CheckingPlagiarism CheckingRewriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
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
64%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals3/10
- Feature description similarity19/20
Shared goals 2 of the 6 we tag Smodin for
AI DetectionPlagiarism Checking
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.
9
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
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals5/10
- Feature description similarity10/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
ZeroGPT Plus can detect if text came from AI with high accuracy
Input: text, documents · Output: text
Free planFrom $9.9/mo
56%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals5/10
- Feature description similarity9/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
11
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
54%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals3/10
- Feature description similarity9/20
Shared goals 2 of the 6 we tag Smodin for
AI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
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
54%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals5/10
- Feature description similarity7/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
Scribbr AI Detector is a free checker that estimates whether a piece of writing was produced by an AI model.
Input: text · Output: data
Free plan
60%Partial replacement — covers the main need with gaps
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals5/10
- Feature description similarity14/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionPlagiarism CheckingHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
14
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
52%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals3/10
- Feature description similarity7/20
Shared goals 2 of the 6 we tag Smodin for
AI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
UnGPT takes AI-generated text and rewrites it to mimic natural human writing patterns that slip past detection algorithms
Input: text · Output: text
From $9.92/moBrowser extension
55%Limited overlap · same core category as Smodin
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals9/10
- Feature description similarity4/20
Shared goals 5 of the 6 we tag Smodin for
WritingAI DetectionGrammar CheckingPlagiarism CheckingHumanizing Text
Also tagged for
SEO Writing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
ZeroGPT processes text quickly to detect AI-generated content
Input: text, images, video, documents · Output: text
From $7.99/mo
51%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals5/10
- Feature description similarity4/20
Shared goals 3 of the 6 we tag Smodin for
AI DetectionPlagiarism CheckingHumanizing Text
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.
17
Copyleaks is a content authenticity platform that checks whether text was written by AI and whether it copies existing sources.
Input: text, images, video, documents, code · Output: data
From $13.99/moAPI
57%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals3/10
- Feature description similarity12/20
Shared goals 2 of the 6 we tag Smodin for
AI DetectionPlagiarism Checking
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.
18
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
57%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals3/10
- Feature description similarity12/20
Shared goals 2 of the 6 we tag Smodin for
AI DetectionPlagiarism Checking
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.
19
StudyPro gives you 500 free credits daily
Input: text, documents · Output: text
Free planFrom $6/mo
55%Limited overlap · same core category as Smodin
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals10/10
- Feature description similarity3/20
Shared goals 6 of the 6 we tag Smodin for
WritingAI DetectionGrammar CheckingPlagiarism CheckingRewritingHumanizing Text
Also tagged for
Essay Writing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
20
Yomu AI is an academic writing assistant that drafts, edits and cites essays, research papers, literature reviews and theses inside one document editor.
Input: text, images, documents · Output: text
From $10/mo
55%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals2/10
- Feature description similarity11/20
Shared goals 1 of the 6 we tag Smodin for
Plagiarism Checking
Also tagged for
Essay WritingPDF WorkResearch Papers
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
21
WriterZen costs nothing for 15 days
Input: text · Output: text, data
Free planFrom $135/mo
48%Limited overlap
00
How the score adds up
- Offers Plagiarism Checking as a secondary capability42/70
- Shares Smodin's other goals2/10
- Feature description similarity5/20
Shared goals 1 of the 6 we tag Smodin 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.
Can it really replace Smodin for checking for plagiarism? 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 Smodin alternatives for Plagiarism Checking
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| Scribbr Plagiarism Checker | 80% | text, documents | documents | Free | Yes | — | AI Plagiarism Checker |
| Turnitin | 77% | text, documents | data | — | No | — | AI Plagiarism Checker |
| QuillBot | 64% | text, images, documents | text, images, documents, slides | From $19.95/mo | Yes | — | AI Rewriter |
| Grammarly | 63% | text | text | From $12/mo | Yes | — | AI Grammar Checker |
| AHelp | 63% | text | text | From $4.17/mo | Yes | — | AI Writing Assistants |
| Phrasly | 67% | text | text | From $9.8/mo | No | — | Humanizer AI |
Frequently asked
What is the best Smodin alternative for checking for plagiarism?
Scribbr Plagiarism Checker (80% match) is the closest alternative to Smodin for checking for plagiarism: Scribbr Plagiarism Checker compares a document with a database of 99 billion web pages and 8 million publications and shows where the text matches existing sources. Turnitin (77% match) and QuillBot (64% match) come next.
Is there a free alternative to Smodin for checking for plagiarism?
Yes. 15 of the 21 ranked alternatives have a free plan or free tier, including Scribbr Plagiarism Checker, QuillBot, Grammarly.
How is the match percentage calculated?
It measures how much of Smodin's job a tool can take over for checking for plagiarism: 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 Smodin's job each tool can take over when the goal is checking for plagiarism: 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.