Top 10 Free Plagiarism Checkers for Academic Research

 

#	Tool Name	Word Limit / Free Usage	Key Features for Academic Research	Website
1	Grammarly (Free)	1000 words per check approx.	Checks plagiarism against web sources; grammar/style check; ideal for academic drafts	grammarly.com
2	Quetext (Free)	500 words per check free	Deep search, citation assistant, suitable for short research sections	quetext.com
3	Plagiarism Checker by SmallSEOTools	Up to 1,500 words per check	File upload, text check, citation suggestions; academic-friendly	smallseotools.com
4	PaperRater	5 pages / 10,000 words per month free	Plagiarism, grammar, and writing style check; suitable for research papers	paperrater.com
5	SearchEngineReports.net	1,500 words per check	Quick text check with source links; easy for research paragraphs	searchenginereports.net
6	Duplichecker (Free)	1,000 words per check	Copy-paste or upload files; shows matched sources; good for academic drafts	duplichecker.com
7	Plagium (Basic Free)	5,000 characters per search	Simple interface for checking sections; academic-friendly	plagium.com
8	Plagiarism Detector (Free)	1,000 words per check	Highlights matched text with sources; good for research sections	plagiarismdetector.net
9	EduBirdie Plagiarism Checker	1,500 words per check	Shows matched sources; simple UI; free for short research drafts	edubirdie.com
10	Prepostseo Plagiarism Checker	1,000 words per check	Academic source detection, file upload, multiple language support	prepostseo.com

Tool academic research paper

 

Tool	What it offers	Free-tier details / caveats
Litero AI	Describes itself as an “academic research paper writer/co-pilot”: helping you with source finding, drafting, paragraph generation, citations. (Litero)	Free trial available (“Try Now for Free”). Likely limited usage.
Smodin AI Research Paper Writer	A “research paper generator” where you input title/keywords/outlines and it creates a draft. (smodin.io)	Free account needed; quality and depth may vary; you must supply input and then refine.
Paperguide AI Paper Writer	Offers “Full Document Generation… structured documents with citations” for research papers. (Paperguide)	Free tier available; check limits on word count, citations, export.
HIX AI Research Paper Generator	Described as a tool to generate “well-structured, comprehensive research papers” with citations and multiple formats (APA/MLA). (HIX.AI)	Free usage claimed, but likely with restrictions (word count, features).
Trickle AI Paper Writer	Free tool which can “generate structured academic papers” by topic and format type. (content.trickle.so)	100% free claim (“no login, unlimited”), though you’ll still need to check output quality and citations.
Pixelfox AI Research Paper Generator	Another tool aimed at “crafting well-structured, comprehensive research papers” including tone, format options. (pixelfox.ai)	Free access available; you will need to edit and verify the generated content.

Top Alternatives QuillBot

 

1. Wordtune

   • Uses AI to understand context and offer different rewriting options (not just synonym swaps). fastwordcount.com+1

   • Supports tone changes: e.g., you can make something more casual or more formal. Merlio+1

   • Very useful if you’re writing blog posts, content marketing, emails — where style matters more than just “different words”.

2. Scribbr Paraphrasing Tool

   • Specialised more for academic / student writing: formal rewriting, aimed at clarity, correct tone for papers. fastwordcount.com+1

   • Good if you are in a student context (which you are, you mentioned earlier doing CBSE etc) and need correctness plus rewriting.

3. Paraphraser.io

   • A simpler but effective tool: free, supports multiple languages, allows larger input lengths for free than some other tools. Rigorous Themes+1

   • Useful if you’re doing quick rewrites and don’t need tons of extras.

4. Grammarly (with rephrase/paraphrase features)

   • Not purely a “paraphrasing” tool, but it offers rephrasing/sentence-suggestions + tone/style enhancements. Tech Business Trends+1

   • Good if you want both rewriting and polishing (grammar/errors/style) in one.

5. Rewording.io / SEOToolsCentre Paraphraser

• Free, simpler tools but allow large amounts of text and some language flexibility. rewording.io

• Might not have as many advanced tone modes or deep understanding of context, but good for more volume or simpler needs.

 Good Free Tools

• Smodin AI Paraphrasing Tool: Free tool, allows different rewriting “strengths” (1-4) and supports uploads (.doc/.pdf) of text. Smodin

• Scribbr Paraphrasing Tool: Totally free, no login needed, with Standard/Fluency modes — good for academic writing. Scribbr

• Semrush Paraphrasing Tool: Free mode includes 5 rewriting modes (Paraphrase, Improve, Formal, Simplify, Casual). Semrush

• Paraphraser.io: Free paraphrasing for sentences/paragraphs, supports many languages and tone options. Paraphraser.io

• Paperpal AI Paraphraser: Designed for academic writing, supports 50+ languages, tone adjustments. Paperpal

#	Tool	What it offers	Free-tier / no-sign-up details	Why it’s good for researchers
1	Scribbr Paraphrasing Tool	Rewrites sentences/paragraphs, two modes: “Standard” & “Fluency”. Supports multi-language, upload docs. (Scribbr)	100% free, no login required. Up to ~125 words per input. (Scribbr)	Good for academic tone and doing quick rewrites of complex research text.
2	Paperpal Paraphrasing Tool	Specifically marketed to students & researchers: tone adjustments, multilingual support, built for academic writing. (Paperpal)	Free version available; integrates with MS Word, Google Docs, Overleaf. (Paperpal)	Very suitable for research manuscripts: preserves context, citations, formal tone.
3	Paraphraser.io	AI-based paraphraser, supports “Academic Writing” mode, 20+ languages. (Paraphraser.io)	Free online usage; input limits may apply.	Good for multilingual research work, or translations of academic text.
4	EaseMate AI Paraphraser	No sign-up needed, advertises “5,000 words” input, choice of style/tone. (EaseMate)	Free, unlimited daily usage claimed.	Useful when you have a large chunk of research text and want minimal friction.
5	Semrush AI Paraphrasing Tool	Rewording tool from a major company; supports multiple paraphrase modes: simplify, rewrite, improve. (Semrush)	Free tier: up to “three times per day” in some modes. (Semrush)	Good for refining clarity in your research writing, improving readability of dense text.