Documents & Writing
Best Writing Style Checkers in 2026
A style checker can help keep wording consistent across documents, whether you are applying an in-house guide or reviewing individual edits. Compare editor support and rule actions alongside custom style guides, brand voice rules, and terminology management.
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DeepL Write DeepL Write suits people who want help revising text across listed writing languages, devices, and browser extensions.
Free plan Web · Windows · macOS · iOS9.3 Visit Specs - 02 JSS Style Checker Free plan Open source Web · API · Self-hosted · Browser extension8.8 Visit Specs
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Revise Revise suits writers and teams editing office documents with AI assistance, tracked review, and collaboration.
From $8/mo Free plan Web · API · Self-hosted8.7 Visit Specs - 04
Sapling Sapling suits teams seeking writing assistance and developers integrating language model-powered features.
From $12/mo Free plan Web · Windows · API · Self-hosted8.7 Visit Specs - 05
ProWritingAid It suits English-language writers who want grammar and style suggestions in supported editors or browsers.
From $10/mo Free plan Browser extension8.6 Visit Specs - 06
Readable From $12/mo Free trial Web · API8.5 Visit Specs - 07 Trinka
Trinka suits academic and technical writers who want grammar, style, document proofreading or citation tools.
From $6.67/mo Free plan Web · Windows · macOS · API8.5 Visit Specs - 08 Markup AI From $249/mo Free trial Web · Windows · macOS · API8.4 Visit Specs
- 09 textlint
textlint suits writers and teams who want configurable text checks in an editor or CI workflow.
Free plan Open source Web · Windows · macOS · Linux8.4 Visit Specs - 10
WRITER Free trial Web · Windows · macOS · API8.4 Visit Specs - 11
Hemingway Editor Hemingway Editor suits writers who want readability feedback and teams working on communications, grants or sales proposals.
From $8.33/mo Free trial Web · Windows · macOS8.3 Visit Specs - 12
Claritar Claritar suits agencies managing multiple client voices, terminology rules, approvals, and website audits.
From $19/mo Free plan Web8.1 Visit Specs - 13 StyleGuard
StyleGuard suits students, freelancers, institutions, corporations and media organizations that need proofing against named style references or custom rules.
Free trial Web · Windows · macOS · API8.1 Visit Specs - 14 Content Checker
Content Checker suits content designers, publishers, and others writing for the UK government.
Free plan Web · macOS · iOS · Android8.0 Visit Specs - 15 Lingofy
Lingofy suits writers, editors, and teams that need shared terminology, style references, and brand rules across supported applications.
From $4.17/mo Web · Windows · macOS · API8.0 Visit Specs - 16 Typerighter Free plan API · Self-hosted8.0 Visit Specs
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StyleMCP StyleMCP is suited to marketing and content teams, engineering and documentation teams, and support and product teams that need to apply brand rules to generated copy.
From $9/mo Free plan Web · Linux · API · Self-hosted7.9 Visit Specs - 18 PerfectIt
It suits proofreaders, editors, medical writers, proposal professionals, technical communicators, consultants, communications professionals, and lawyers who check professional documents.
Free trial Web · Windows · macOS · iOS7.8 Visit Specs - 19
Congree Authoring Server Web · Windows · API · Self-hosted7.7 Visit Specs - 20 StyleWriter From $90/mo Free trial Windows7.7 Visit Specs
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Vale Vale suits writers and documentation teams that want style-guide checks in editors or alongside code.
Free plan Web · Windows · macOS · Linux7.7 Visit Specs - 22
alex Web · API · Browser extension7.5 Visit Specs - 23 proselint Free plan Linux · Self-hosted7.5 Visit Specs
- 24 WordRake Free trial Windows · macOS7.2 Visit Specs
- 25 Monostyle Linux7.1 Visit Specs
API access and team workflow are useful dimensions when checks need to fit into shared processes; free-plan availability and paid-from pricing add cost context. Sapling, DeepL Write, and StyleMCP are among the named options, as are Vale and Hemingway Editor. Consider which writing controls matter to your work, and whether you need team coordination, specific editor support, or a way to manage preferred terminology.
Compare DeepL Write and JSS Style Checker Get a place on this list