Best Free Grammarly Alternatives
20 alternatives to Grammarly with a free plan or free tier, ranked by how closely they match. The percentage is a match score, not a popularity score.
Replacing: Grammarly — Writing confidence that follows you everywhereInput: text · Output: text
1
Rephrase until it sounds right
Rewriting-first tool that also summarizes and checks plagiarism; free tier
Input: text, images, documents · Output: text, images, documents, slides
Free planFrom $19.95/mo
84%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 6 of the 6 we tag Grammarly for
Grammar CheckingAI DetectionPlagiarism CheckingRewritingWritingHumanizing Text
Also tagged for
Summarizing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
2
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.
Grammar and style checks in 30+ languages, with add-ins for Word, Docs and Outlook
Input: text · Output: text
Free planBrowser extensionTeams
82%Strong alternative · same core category as Grammarly
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
3
Rewrite sentences without rewriting them yourself
Suggests rewrites for whole sentences; free tier, from $4.89 a month
Input: text · Output: text
Free planFrom $4.89/mo
80%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
4
ProWritingAid is a writing toolkit built around the full path of a book, from first idea to publication.
Writing toolkit shaped around a book's path from first idea to publication
Input: text · Output: text
Free planFrom $10/mo
78%Strong alternative
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 2 of the 6 we tag Grammarly for
Grammar CheckingWriting
Also tagged for
Book Writing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
5
Grammar Checker.cc is a free online grammar checker.
Plain online grammar checker that costs nothing
Input: text, documents · Output: text
Free plan
64%Partial replacement — covers the main need with gaps · same core category as Grammarly
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 1 of the 6 we tag Grammarly for
Grammar Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
6
RewriteBar offers a free trial before you buy
Rewriting and translation helper with grammar checks; free trial
Input: text · Output: text
Free planFrom $29/mo
60%Partial replacement — covers the main need with gaps
00
How the score adds up
Score set by our editors after reviewing both products; the overlap below is what they weighed.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Also tagged for
Translation
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
59%Limited overlap · same core category as Grammarly
00
How the score adds up
- Same core category55/55
- Covers Grammarly's goals21/25
- Feature description similarity12/20
Capped below the editor-ranked picks above it.
Shared goals 5 of the 6 we tag Grammarly for
Grammar CheckingAI DetectionPlagiarism CheckingRewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
8
DeepL Write is an AI writing assistant from the makers of DeepL Translator.
Input: text · Output: text
Free planFrom $6.99/mo
58%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Grammarly's goals11/25
- Feature description similarity8/20
Capped below the editor-ranked picks above it.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
9
You describe what you need and it creates, reads and edits the document, rewrites passages, summarizes long files and answers questions on how to improve your writing.
Input: text, audio, documents · Output: text, images, documents
Free planFrom $99.99/moMobile appTeams
56%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Grammarly's goals11/25
- Feature description similarity6/20
Capped below the editor-ranked picks above it.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Also tagged for
Summarizing
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
10
Overleaf AI Assist is the set of AI features built into Overleaf, the online LaTeX editor.
Input: text, images, code · Output: text, code
Free planFrom $7.25/mo
55%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Grammarly's goals11/25
- Feature description similarity5/20
Capped below the editor-ranked picks above it.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Also tagged for
SummarizingResearch Papers
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
11
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
50%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals8/25
- Feature description similarity12/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 6 we tag Grammarly for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
12
SpinBot is a free online article spinner and paraphrasing tool that rewrites readable text into new wording.
Input: text · Output: text
Free planBrowser extension
53%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Grammarly's goals8/25
- Feature description similarity7/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 6 we tag Grammarly for
Grammar CheckingRewriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
13
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
53%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Grammarly's goals11/25
- Feature description similarity4/20
Capped below the editor-ranked picks above it.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingAI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
14
AI in browser sidebar always ready
Input: text, images, documents, code, web pages · Output: text, images, video, code
Free planFrom $8.3/mo
49%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals15/25
- Feature description similarity4/20
Capped below the editor-ranked picks above it.
Shared goals 4 of the 6 we tag Grammarly for
Grammar CheckingRewritingWritingHumanizing Text
Also tagged for
SummarizingImage GenerationVideo GenerationVideo SummariesCodingMind MappingEmail WritingPDF WorkSearchTranslationData AnalyticsResearch
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
15
A Windows-only text improvement tool that sits in the background of any application and activates with a keyboard shortcut
Input: text · Output: text, audio
Free planFrom $2.79/moAPI
52%Limited overlap
00
How the score adds up
- Each lists the other's core category39/55
- Covers Grammarly's goals11/25
- Feature description similarity2/20
Capped below the editor-ranked picks above it.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
16
WriteHuman is an AI humanizer that rewrites machine-generated drafts so they read like a person wrote them.
Input: text · Output: text
Free planFrom $12/moAPI
51%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals8/25
- Feature description similarity13/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 6 we tag Grammarly for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
17
StealthWriter is an AI text humanizer with a built-in AI detector.
Input: text · Output: text
Free planFrom $20/moTeams
50%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals8/25
- Feature description similarity12/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 6 we tag Grammarly for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
18
Your AI assistant for everything
Input: text, images, audio, documents, code · Output: text, images, audio, code
Free planFrom $8/mo
45%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals11/25
- Feature description similarity4/20
Capped below the editor-ranked picks above it.
Shared goals 3 of the 6 we tag Grammarly for
Grammar CheckingRewritingWriting
Also tagged for
Essay WritingSummarizingImage GenerationImage to ImageVideo GenerationVoice AssistantsCodingAI AgentsPDF WorkPresentationsSearchSpreadsheets
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
19
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
45%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals8/25
- Feature description similarity7/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 6 we tag Grammarly for
AI DetectionPlagiarism Checking
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
20
AI Humanizer by WriteHybrid rewrites AI-generated drafts into natural, human-sounding text while preserving your meaning.
Input: text · Output: text
Free planFrom $19/mo
46%Limited overlap
00
How the score adds up
- One lists the other's core category30/55
- Covers Grammarly's goals8/25
- Feature description similarity8/20
Capped below the editor-ranked picks above it.
Shared goals 2 of the 6 we tag Grammarly for
AI DetectionHumanizing Text
Goal tags are curated and capped, not a full feature audit — a missing tag is not a missing feature.
Can it really replace Grammarly? 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 Grammarly alternatives
| Tool | Match | Input | Output | Pricing | Free plan | Rating | Category |
|---|---|---|---|---|---|---|---|
| QuillBot | 84% | text, images, documents | text, images, documents, slides | From $19.95/mo | Yes | — | AI Rewriter |
| LanguageTool | 82% | text | text | Free | Yes | — | AI Grammar Checker |
| Wordtune | 80% | text | text | From $4.89/mo | Yes | — | AI Rewriter |
| ProWritingAid | 78% | text | text | From $10/mo | Yes | — | AI Writing Assistants |
| Grammar Checker.cc | 64% | text, documents | text | Free | Yes | — | AI Grammar Checker |
| RewriteBar | 60% | text | text | From $29/mo | Yes | — | AI Writing Assistants |
Frequently asked
What is the best free Grammarly alternative?
QuillBot (84% match) is the closest free alternative to Grammarly: Rephrase until it sounds right. LanguageTool (82% match) and Wordtune (80% match) come next.
What is the best Grammarly alternative for humanizing AI text?
Undetectable AI ranks first for humanizing AI text at 85% match. See the full list of Grammarly alternatives for Humanizing Text.
What is the best Grammarly alternative for detecting AI-written content?
GPTZero ranks first for detecting AI-written content at 88% match. See the full list of Grammarly alternatives for AI Detection.
What is the best Grammarly alternative for checking for plagiarism?
Copyleaks ranks first for checking for plagiarism at 85% match. See the full list of Grammarly alternatives for Plagiarism Checking.
How is the match percentage calculated?
It measures how much of Grammarly'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 Grammarly'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.