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Best Writing Style Checkers in 2026
Writing style checkers help you review text against language rules, style guidance, or terminology your work requires. Compare editor support and rule action with custom style guides, brand voice rules, and terminology management to understand the controls offered. API access and team workflow may be relevant if checks need to connect with other tools or shared review processes. Free-plan availability and paid-from pricing provide further comparison points. DeepL Write, Trinka, and Vale are among the options, alongside Sapling and ProWritingAid. Consider whether your priority is individual editing, consistent organizational language, or coordinated team review.
- 29 apps
- Research read 23 Sept 2026
- How the order is worked out
- 1
JSS Style Checker
Free plan Open source APIExtensionSelf-hosted+1JSS Style Checker offers several ways to check manuscript files, with local browser processing and CI support among its options.
- 2
textlint
Free plan Open source APIExtensionLinux+4textlint offers configurable natural-language linting across command-line, editor, CI, and programmatic workflows. Users need to install their own rules and meet the Node.js 20+ requirement.
- 3
Content Checker
Free plan AndroidiPhoneMac+1Content Checker combines style checks, a searchable guide, and URL suggestions, with a setting for HMRC-specific rules.
- 4
DeepL Write
Free plan AndroidAPIExtension+4DeepL Write combines text revision tools with multiple app, extension, and integration options. The free version has monthly character and file limits, while Write Pro is an add-on billed annually.
- 5
Hemingway Editor
Free plan MacWebWindowsHemingway Editor offers readability feedback, with Editor Plus adding AI editing and document review.
- 6
alex
Free plan APIExtensionWebalex offers configurable checks across several writing formats, with command-line, API, and integration options.
- 7
Claritar
Free plan WebClaritar brings voice scoring, guideline enforcement, review workflows, and sitemap audits into one web product for agencies.
- 8
Sapling
Free plan APIExtensionSelf-hosted+2Sapling brings team writing tools together with developer APIs, integrations and enterprise deployment options.
- 9
proselint
Free plan LinuxSelf-hostedChoose proselint if you want a free prose linter with configurable checks, command-line output, and a Python interface.
- 10
Revise
Free plan APISelf-hostedWebRevise combines a browser-based editor with AI drafting, tracked edits, and collaboration. The free plan is limited by a daily AI allowance, while paid plans start at $8 per month.
- 11
StyleMCP
Free plan APILinuxSelf-hosted+1StyleMCP pairs draft validation and rewrites with several ways to connect it to team workflows. Check request limits before choosing a plan, particularly for batch processing.
- 12
Readable
Free plan APIWebReadable combines broad text analysis with editing suggestions and multiple ways to submit content. Its listed ContentPro plan starts at $12 a month, with API access reserved for AgencyPro.
- 13
Trinka
Free plan APIExtensionMac+3Trinka combines academic and technical language tools with document proofreading and integrations.
- 14
Vale
Free plan LinuxMacSelf-hosted+2Vale offers configurable prose checks across many formats, editors, and code workflows. Note that only error-level alerts make CI return a non-zero exit code.
- 15
ProWritingAid
by ProWritingAidFree plan ExtensionProWritingAid combines writing suggestions with reports, integrations, and plagiarism checking. Check the free limits and refund terms against your writing needs before choosing a plan.
- 16
Monostyle
Free plan LinuxMonostyle offers a broad set of configurable checks for reStructuredText documentation, with change-focused checking and autofix.
- 17
Typerighter
Free plan APISelf-hostedChoose Typerighter if you need user-maintained rules for checking copy and can deploy and configure its services.
- 18
write-good
Free plan LinuxChoose write-good if you want an open-source linter that returns suggestions through a CLI or JavaScript API and lets you tailor its checks.
- 19
Markup AI
Free trial APIExtensionMac+2Markup AI combines brand, quality, and AI-search-oriented reviews with broad integrations. Plan choice depends on annual word volume, support needs, and enterprise controls.
- 20
PerfectIt
Free trial iPhoneMacWeb+1PerfectIt focuses on consistency and style checks while leaving edits to the writer. Its 14-day trial offers a way to evaluate it, but plan prices are not published.
- 21
StyleGuard
Free trial APIExtensionMac+2StyleGuard combines live proofreading with reference guides, custom terminology, and team rule sharing.
- 22
Congree Authoring Server
Paid APISelf-hostedWeb+1Congree Authoring Server combines language checks, terminology guidance, approved-text reuse, and integrations for organizational writing workflows.
- 23
Lingofy
Paid APIExtensionMac+2Choose Lingofy if your writing needs to follow shared dictionaries, references or custom terminology and style rules. Its shared entries, team workflow and editor support suit collaborative proofing.
- 24
- 25
StyleWriter
Free trial WindowsStyleWriter combines manuscript editing, grammar checks, readability reporting, and customizable proofreading in a Windows desktop application.
#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price