Harper AlternativesOnly apps categorised as AI Writing Tools

The best AI Writing alternative to Harper is LanguageTool, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Harper and 12 are AI Writing Tools so hopefully you can find a suitable replacement. Other interesting AI Writing Tool alternatives to Harper are DeepL Write, Grammarly, QuillBot and Compose.

Harper iconHarper
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Harper is an English grammar checker designed to be just right. I created it after years of dealing with the shortcomings...

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Harper alternatives page was last updated May 6, 2025
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  1. LanguageTool icon

    LanguageTool

     168 likes
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    Proofreading software compatible with LibreOffice, Word, Firefox, and Chrome. Supports 20+ languages, offering two tiers: free and premium, with features like customizable checks, Microsoft add-on, and error detection in gender, ISBN, and IBAN. Offers open-source web and desktop versions.

    76 LanguageTool alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • iPhone
    • iPad
    • Microsoft Edge
    • ONLYOFFICE
    • Google Chrome
    • Microsoft Outlook
    • Safari
    • Visual Studio Code
    • Microsoft Word
    • Eclipse
    • TinyMCE
    • Google Docs
    • Thunderbird
    • Vim
    • Sublime Text
    • GNU Emacs
    • Opera
    • Gmail
    • LibreOffice
    • Apache OpenOffice
    • Mozilla Firefox
    • LibreOffice - Writer
    LanguageTool screenshot 1

    Properties

    1.  Privacy focused
    2.  Lightweight

    Features

    1.  Multiple languages
    2.  Automated proofreading
    3.  Proofreading
    4.  Grammar tool
    5.  Custom dictionaries
    6.  Spell Checking
    7.  Dark Mode
    8.  Microsoft Edge extension
    9.  Ad-free
    10.  Neural network
    11.  N-grams
    12. Obsidian icon  Obsidian Integration

    LanguageTool VS Harper

     

    • LanguageTool is the most popular Web-based, Windows, Mac & iPhone alternative to Harper.

    • LanguageTool is the most popular Open Source & free alternative to Harper.

    • LanguageTool is Freemium and Open SourceHarper is Free and Open Source
    • LanguageTool is Privacy focused and LightweightHarper is not according to our users
  2. DeepL Write icon

    DeepL Write

     72 likes
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    An AI tool enhancing English and German communication by offering robust suggestions on phrasing, tone, style, and grammar, ideal for professionals, multilingual teams, and varied proficiency users.

    108 DeepL Write alternatives

    License model

    • Free • Proprietary

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Online
    DeepL Write screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  AI Writing
    2.  Spell Checking
    3.  Grammar tool
    4.  AI-Powered
    5.  Ad-free
    6.  Text to Speech
    7.  Live Preview
    8.  No Coding Required

    DeepL Write VS Harper

     
  4. Grammarly icon

    Grammarly

     242 likes
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    Delivers real-time spelling, grammar, and style check, generative AI for instant drafts, comprehensive writing feedback, and enhanced sentence clarity and word choice for effective communication on multiple platforms, including desktops and web browsers.

    116 Grammarly alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Microsoft Edge
    • Google Chrome
    • Microsoft Outlook
    • Safari
    • Microsoft Word
    • Software as a Service (SaaS)
    • Mozilla Firefox
    Grammarly screenshot 1

    Properties

    1.  Lightweight
    2.  Security-focused
    3.  Educational

    Features

    1.  Grammar tool
    2.  Grammatical Error Checking
    3.  Automated proofreading
    4.  Plugin for office programs
    5.  Spell Checking
    6. Microsoft Word icon  Microsoft Word integration
    7.  Browser integration
    8.  Ad-free
    9.  Dark Mode
    10.  Works Offline
    11.  AI-Powered
    12.  No registration required

    Grammarly VS Harper

     

    • Grammarly is the most popular SaaS alternative to Harper.

    • Grammarly is Freemium and ProprietaryHarper is Free and Open Source
    • Grammarly is LightweightHarper is not according to our users
  5. Ad
    Screenshot
    editGPT icon
    editGPT

    AI-based editor offering real-time proofreading, grammar and style suggestions, tone adjustments, and audience-specific tailoring. Preserves tracked changes in Word, supports long-form and industry-specific editing, and edits in ...

    https://editgpt.app
    Learn More
  6. QuillBot icon

    QuillBot

     8 likes
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    QuillBot can help you paraphrase, summarize, grammar check and even plagiarism check all of your essays using AI.

    37 QuillBot alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Online
    • Google Chrome
    • Microsoft Word
    • Android
    • Microsoft Edge
    • Safari
    • Windows
    QuillBot screenshot 1

    QuillBot Features

    1.  Spell Checking
    2.  AI-Powered
    3.  Web-Based

    QuillBot VS Harper

     

    • QuillBot is the most popular Android alternative to Harper.

    • QuillBot is Freemium and ProprietaryHarper is Free and Open Source
  7. Compose icon

    Compose

     2 likes
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    Transform your writing instantly with Compose. Fix grammar, improve tone, and craft professional messages with just a keyboard shortcut, anywhere on your computer.

    52 Compose alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    Compose screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  No registration required
    2.  Ad-free
    3.  No Tracking
    4.  Support for Keyboard Shortcuts
    5.  Grammar tool
    6.  AI-Powered
    7.  Proofreading

    Compose VS Harper

     
  8. CleverType icon

    CleverType

     4 likes
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    CleverType Keyboard is an AI-powered tool utilizing ChatGPT technology, offering versatile writing options to enhance productivity and typing accuracy.

    24 CleverType alternatives

    License model

    • Freemium • Proprietary

    Application types

    Platforms

    • Android
    • Google Chrome
    • iPhone
    CleverType screenshot 1

    Properties

    1.  Customizable

    Features

    1.  AI-Keyboard
    2.  Grammar tool
    3.  AI-Powered

    CleverType VS Harper

     
  10. Fixkey icon

    Fixkey

     3 likes
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    Fixkey fixes your grammar in any app using AI.

    License model

    Application types

    Platforms

    • Mac
    Fixkey screenshot 1

    Properties

    1.  Lightweight
    2.  Distraction-free

    Features

    1.  Spell Checking
    2.  Grammar tool
    3.  AI-Powered
    4.  Support for Keyboard Shortcuts
    5.  Works Offline
    6.  Ad-free
    7.  Multiple languages
    8.  Dictation
    9.  Voice dictation

    Fixkey VS Harper

     

    • Fixkey is the most popular commercial alternative to Harper.

    • Fixkey is Paid and ProprietaryHarper is Free and Open Source
    • Fixkey is LightweightHarper is not according to our users
  11. editGPT icon

    editGPT

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    AI-based editor offering real-time proofreading, grammar and style suggestions, tone adjustments, and audience-specific tailoring. Preserves tracked changes in Word, supports long-form and industry-specific editing, and edits in over 80 languages to ensure confidentiality and data privacy.

    29 editGPT alternatives

    License model

    • Freemium • Proprietary

    Application types

    Platforms

    • Online
    • Google Chrome
    • Microsoft Edge
    • Mozilla Firefox
    editGPT screenshot 1

    editGPT Features

    1.  Spell Checking
    2.  Ad-free
    3.  Automated proofreading
    4.  Proofreading
    5.  AI-Powered
    6.  Grammar tool
    7.  Multiple languages

    editGPT VS Harper

     
  12. Wordtune icon

    Wordtune

     6 likes
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    Powered by deep AI technology, Wordtune helps you rephrase your sentences to say exactly what you mean through clear, compelling, and authentic writing.

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • IL flagIsrael

    Platforms

    • Online
    • iPhone
    Wordtune screenshot 1

    Wordtune Features

    1.  Spell Checking
    2.  Ad-free
    3.  Works Offline
    4.  AI-Powered

    Wordtune VS Harper

     
  13. RewritePal icon

    RewritePal

     5 likes
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    RewritePal is a free, AI-powered tool designed to make your writing clear, compelling, and tailored to any audience. Whether you're a student, professional, or content creator, RewritePal helps you transform paragraphs into polished, reader-friendly text in seconds.

    License model

    • Free • Open Source

    Application types

    Platforms

    • Online
    RewritePal screenshot 1

    Properties

    1.  Distraction-free
    2.  Lightweight
    3.  Privacy focused

    Features

    1.  Ad-free
    2.  Spell Checking
    3.  No registration required
    4.  Grammar tool
    5.  Proofreading
    6.  AI-Powered
    7.  No Tracking
    8.  Automated proofreading
    9.  Multiple languages

    RewritePal VS Harper

     
  14. Wordvice.ai icon

    Wordvice.ai

     2 likes
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    Wordvice AI Proofreader is an all-in-one editor and writing tutor that makes context-based suggestions to improve your vocabulary and enhance your style.

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • KR flagSouth Korea

    Platforms

    • Online
    Wordvice.ai screenshot 1

    Properties

    1.  Distraction-free

    Features

    1.  No registration required
    2.  Ad-free
    3.  Automated proofreading
    4.  Text editing
    5.  Proofreading

    Wordvice.ai VS Harper

     
  15. Trinka AI icon

    Trinka AI

     Like
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    Trinka AI - the complete writing assistant. Trinka is an online grammar checker for academic and technical writing. From advanced English grammar errors to scientific spelling, Trinka corrects it all!.

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • IN flagIndia

    Platforms

    • Mac
    • Windows
    • Online
    • iPhone
    • Self-Hosted
    • Microsoft Edge
    • Google Chrome
    • Microsoft Office Word
    • Software as a Service (SaaS)
    • Wordpress
    • Firefox
    Trinka AI screenshot 1

    Properties

    1.  Distraction-free
    2.  Lightweight

    Features

    1.  Spell Checking
    2.  Works Offline
    3.  Ad-free
    4.  Personal dictionary
    5.  Cloud Sync
    6.  AI-Powered
    7.  Writing assistance
    8.  Grammar tool
    9.  Grammatical Error Checking
    10.  Citation detection

    Trinka AI VS Harper

     
12 of 12 Harper alternatives