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List of the Best AI Writing Assistant Software in 2026

Rajat Gupta
Researched and Edited by Rajat Gupta
Rajat Gupta

Researched and Edited by Rajat Gupta

Last updated: · How we review

Editor's Summary · AI Writing Assistant Software

Grammarly Business holds a 9.6 SpotScore with a 4.6/5 from 8,647 reviews — by far the most validated AI writing tool in this category — checking grammar, tone, clarity, and engagement across browsers, email clients, and Google Docs via browser extension with freemium access. QuillBot scores 4.09/5 from 150 reviews at a 9.6 SpotScore and has become the go-to paraphrasing and summarization tool for students and academic researchers, offering multiple rewrite modes on a freemium plan. PaperRater leads on SpotScore at 9.8 with a 4.6/5 from 17 reviews and a freemium tier, running grammar checks and plagiarism detection in a lightweight, no-install tool favored by academic writers doing quick pre-submission checks.

AI writing assistant software checks grammar, suggests rewrites, adjusts tone, and paraphrases text to help individuals and teams write cleaner, more consistent content at higher volume. The main buyers are content marketers, academic researchers, business writers, and customer support teams producing large amounts of written communication.

Quick picks for AI Writing Assistant Software

  • Best overallGrammarly Business
  • Best for paraphrasing and academic researchQuillBot
  • Best for academic grammar and plagiarism checksPaperRater
  • Best free optionGrammarly Business

Who gets the most from AI Writing Assistant Software

  • 1Marketing managers at SaaS companies seeking consistent brand voice across content
  • 2Academic editors and research scholars requiring advanced formatting and collaboration tools
  • 3Content writers and copywriters in digital marketing agencies focused on SEO-friendly and high-quality content
How to choose AI Writing Assistant Software

If you need strong real-time grammar and style suggestions with broad integrations, filter by products offering Microsoft Word and Google Docs support and sort by user rating. For academic or research-focused writing, filter by use cases like Academic Publishing or Research Institutions. If SEO optimization and rapid content generation are priorities, filter by content creation and SEO use cases and consider pricing tiers like Premium or Enterprise.

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Showing 81-100 out of 256

8.6

SpotScore

After the Deadline - AI Writing Assistant Software

After the Deadline

Eliminate errors and elevate your writing.

Best for: SMB teams · Mid-market · Enterprise

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What is After the Deadline?

After the Deadline helps to avoid embarrassing errors and improve writing through AI-powered editing suggestions. Creative professionals rely on spell-checking to eliminate embarrassing errors before they are printed or shared. But spell-checkers can't predict grammar errors. For example, they ...

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8.6

SpotScore

EssayToolBox - AI Writing Assistant Software

EssayToolBox

Effortless essay writing at your fingertips.

Best for: SMB teams · Mid-market · Enterprise

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What is EssayToolBox?

EssayToolBox is an AI writing assistant software that helps to write essays in a quick and easy way. Its revolutionary natural language processing systems creates unique content and it works even better than best friend, as it doesn't complain about mistakes, can be used offline because it ...

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EssayToolBox offers custom pricing plan

8.6

SpotScore

Grammatica - AI Writing Assistant Software

Grammatica

Transform your writing with AI assistance.

Best for: SMB teams · Mid-market

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What is Grammatica?

Grammatica is a new kind of writing assistant that helps to write better. It uses artificial intelligence to improve writing style and grammar. Using just a few words, Grammatica can identify the tense or subject-verb agreement errors in texts, suggest synonyms for words, and even replace ...

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Grammatica offers custom pricing plan

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8.6

SpotScore

Phrasee - AI Writing Assistant Software

Phrasee

Unleash your writing potential with AI assistance.

Best for: SMB teams · Mid-market · Enterprise

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What is Phrasee?

Phrasee is an AI-powered marketing copy platform used by enterprise marketing teams to generate and A/B test email subject lines, SMS messages, and content at scale. It integrates natively with Salesforce and supports multilingual copy generation for global campaign teams running concurrent ...

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Phrasee offers custom pricing plan

8.5

SpotScore

Otio

Otio

Empower your research and writing with cutting-edge AI technology.

Best for: SMB teams · Mid-market · Enterprise

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What is Otio?

Otio is an AI-powered research workspace designed to help researchers, students, analysts, and knowledge workers extract insights from documents, web links, and videos with speed and accuracy. Built specifically for those juggling multiple sources—like academic PDFs, YouTube videos, or ...

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Free TrialTry Free →

8.5

SpotScore

Fablerr

Fablerr

Transform your communication and elevate your online presence.

Best for: SMB teams · Mid-market · Enterprise

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What is Fablerr?

Fablerr is a Chrome Extension that uses AI to help users write social media posts, Reddit comments, and emails. It works across X, Reddit, Gmail, and other websites, with a reply generator and content creation tools. Users can draft posts and responses without leaving the page they are on.

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Starts from $8.00/month when Billed Yearly, also offers free forever plan

What buyers evaluate in AI Writing Assistant Software
Depth and accuracy of grammar, spelling, and style correction tailored to specific writing contexts
Availability of integrations with popular writing and communication platforms (e.g., Microsoft Word, Google Docs, Slack)
Support for specialized writing needs such as multilingual translation, academic formatting, or SEO-optimized content generation

8.5

SpotScore

Zap

Zap

Effortlessly create attention-grabbing cover letters.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

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What is Zap?

Introducing Zap! Say goodbye to the hassle of creating cover letters with the tagline "Discontinue The Creation of Cover Letters." Are you tired of struggling to make your job applications shine? Look no further than Zap, your go-to solution for crafting attention-grabbing cover letters that ...

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Starts from $4.99/month when Billed Yearly, also offers free forever plan

8.5

SpotScore

Straico

Straico

Elevate your productivity with AI-powered creativity.

Best for: SMB teams · Mid-market · Enterprise

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What is Straico?

Unleash your AI potential with Straico, the all-in-one creativity and efficiency tool that empowers users to maximize their output. Perfect for individuals and businesses seeking to elevate their productivity, this state-of-the-art AI solution provides an extensive array of features for content ...

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8.5

SpotScore

Flavored Resume

Flavored Resume

Craft unique resumes that get you noticed by employers.

Best for: SMB teams · Mid-market · Enterprise

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What is Flavored Resume?

Elevate your job search with Flavored Resume, a cutting-edge AI-driven tool designed to revolutionize the way you craft your resume. With our tagline "Tailor The Resume and Get More Interviews," Flavored Resume empowers users to create customized resumes tailored to each job description. Gone ...

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Starts from $8.99/month when Billed Yearly, also offers free forever plan

8.5

SpotScore

2Slash

2Slash

Supercharge your productivity with 2Slash - your AI assistant!

Best for: SMB teams · Mid-market · Enterprise

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What is 2Slash?

2Slash is an AI assistant that helps professionals manage social media content, write Google Sheets formulas, draft email responses, and check grammar from a single interface. It includes customizable templates for common content types including blog posts and social media posts, and runs ...

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Starts from $8.00/month when Billed Yearly

8.5

SpotScore

Lex

Lex

Streamline progress updates and promote team collaboration.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

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What is Lex?

Lex is an innovative P2P progress update platform designed for enhanced productivity and organization. It streamlines the process of saving, sending, and reading updates in one convenient location. With just one click, users can share updates with their network and access them at any time ...

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8.5

SpotScore

Elephas - AI Writing Assistant Software

Elephas

Revolutionize your writing with Elephas.

Best for: SMB teams · Mid-market · Enterprise

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What is Elephas?

Elephas is the first-ever AI writing assistant that works on every device, including Mac, iPhone, and iPad. Save time and make your writing easier with this revolutionary tool! It offers three different modes of content rewriting that make sure you get the most professional and engaging result. ...

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Free TrialTry Free →·

Starts from $4.17/Month when Billed Yearly

8.5

SpotScore

TLDR This - AI Writing Assistant Software

TLDR This

Summarize long articles effortlessly. Time saved, knowledge gained.

Best for: SMB teams · Mid-market

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What is TLDR This?

TLDR This is an amazing text summarization software specifically tailored to give you a quickly and concise overview of a long article or blog post. It filters out distracting elements such as ads, graphics, and redundant sentences so you can focus on the important parts. This cutting-edge ...

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Starts from $5/Month, also offers free forever plan

8.5

SpotScore

Bagel.ai - AI Writing Assistant Software

Bagel.ai

Effortless writing with AI precision.

Best for: SMB teams · Mid-market · Enterprise

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What is Bagel.ai?

Write with speed and precision with Bagel.ai! Save time on your content creation process, and get the perfect results with the help of artificial intelligence. Bagel.ai provides personalized, SEO-ready content to help promote engaging blogs, ads, emails, and more. It uses precise word choices ...

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Free TrialTry Free →·

Starts from $19/Month

8.5

SpotScore

Jasper - AI Writing Assistant Software

Jasper

Unlock your writing potential with AI.

Best for: SMB teams · Mid-market · Enterprise

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What is Jasper?

Jasper is the best AI writing assistant to create content faster and more effectively. Our AI-powered assistant can help marketers, content writers and entrepreneurs break through writer's block and generate engaging content quickly. Experienced or novice, you can rely on Jasper to write blog ...

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Free TrialTry Free →·

Starts from $40/Month when Billed Yearly

8.5

SpotScore

ClosersCopy - AI Writing Assistant Software

ClosersCopy

Revolutionize your content creation with ClosersCopy.

Best for: SMB teams · Mid-market · Enterprise

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What is ClosersCopy?

Introducing ClosersCopy, a game-changing AI-powered content creation and SEO tool. Say goodbye to generic tools and outdated processes. ClosersCopy breaks free from restrictions and filters, providing a plagiarism-free solution for all your content needs. Automate your content creation with ...

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Starts from $20.99/Month when Billed Yearly

8.5

SpotScore

Articoolo - AI Writing Assistant Software

Articoolo

Unleash AI writing genius with Articoolo.

Best for: SMB teams · Mid-market · Enterprise

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What is Articoolo?

Articoolo is a piece of artificial intelligence writing assistant software. It analyzes the content of a text, provides relevant related information or grabs facts and figures from free information database such as Wikipedia, answers questions in human-like manner by using conversational style, ...

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Starts from $29/Month

8.4

SpotScore

Smartli

Smartli

Revolutionize your sales with effortless product descriptions.

Best for: SMB teams · Mid-market · Enterprise

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What is Smartli?

Smartli is an AI writing tool for eCommerce that generates SEO-optimized product descriptions from product details with a single click. It automates copy creation for online stores, producing descriptions formatted to improve search visibility and support higher conversion rates.

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Smartli offers custom pricing plan

8.4

SpotScore

Twain

Twain

Craft captivating sales messages with Twain – your ultimate email helper.

Best for: SMB teams · Mid-market · Enterprise

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What is Twain?

Twain is an AI writing assistant for sales outreach that analyzes cold emails and suggests improvements to openers, body copy, and closing questions. It flags filler words and weak phrasing to help sales teams write clearer, more direct messages that prompt responses.

Read more about Twain

8.4

SpotScore

TheTechBrain AI

TheTechBrain AI

Transform your content game with AI precision.

Best for: SMB teams · Mid-market · Enterprise

Try for Free

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What is TheTechBrain AI?

TheTechBrain AI is an AI content writing tool that generates press releases, technical documents, blog posts, and other content types using natural language processing. It produces original, SEO-ready output through a simple interface, cutting the time digital marketing teams spend on research ...

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Disclaimer: This research has been collated from a variety of authoritative sources. We welcome your feedback at [email protected].