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Education LearningTop 10 Best Online Proofreading Software of 2026
Top 10 list compares online proofreading software for writers and teams, with practical notes on features, formats, and what each tool supports.
How we ranked these tools
Vendors set the topic, but our editors set the inclusion criteria and the evaluation framework before research starts.
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Framework: Features 40% · Ease 30% · Value 30%
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ProWritingAid is the best overall pick for writers and editors who want repeatable style diagnostics across an entire document because its style and consistency reporting spots repeated phrasing drift, while PaperRater is a strong browser-friendly alternative for students who need fast inline proofreading and revision direction from clear readability scoring.
Editor’s top 3 picks
Three quick recommendations before you dive into the full comparison below — each one leads on a different dimension.
ProWritingAid
Style and consistency reports that identify repeated phrasing patterns and style drift across an entire document.
Best for: Fits when writers and editors need repeatable style diagnostics plus proofreading, not only sentence-level grammar fixes.
Ginger Software
Editor pickMultilingual proofreading with editable, inline rewrites that keep corrections readable within the original text.
Best for: Fits when multilingual teams need quick inline proofreading with clear replacement suggestions.
Grammarly
Editor pickAPI-based correction layer that exposes Grammarly’s suggestion engine for embedding into third-party editing workflows.
Best for: Fits when teams need interactive grammar feedback plus API-driven correction for custom writing tools.
Comparison Table
ProWritingAid
SMBComprehensive writing and style analysis tool providing detailed readability and grammar reports.
Style and consistency reports that identify repeated phrasing patterns and style drift across an entire document.
ProWritingAid performs online grammar, style, and consistency checks with detailed category reports like Grammar, Style, and Writing Style.
It adds readability scoring and deeper writing diagnostics beyond single-pass correction, including match-based style suggestions.
Bulk document workflows support batch review for faster turnaround across drafts, and it provides actionable recommendations that map to edit locations.
It also includes plagiarism detection for similarity screening alongside proofreading feedback to catch content overlap during revision.
- +Category-based diagnostics with targeted fix guidance per writing issue
- +Readability scoring and style consistency checks go beyond grammar
- +Bulk upload supports batch document processing for revision cycles
- +Plagiarism detection adds a second check during editing
- –Suggestion density can increase the false positive review workload
- –Some advanced guidance requires familiarity with editing categories
- –Markup-style feedback depends on compatible document formatting
- –Long documents can increase suggestion latency before results finish
Authors and professional writers
Repeat checks after major rewrites
Structured revision checklist
Students and academic writers
Pre-submit review for clarity and similarity
Language issues and similarity flags
Show 2 more scenarios
Technical writers and documentation teams
Improve readability in documentation
Clearer, more consistent drafts
Use readability diagnostics and sentence-level guidance to reduce issues and keep terminology consistent.
Freelance editors and small teams
Batch proofread multiple client drafts
Recurring issues across documents
Run repeatable proofreading checks across several documents to surface shared style and clarity problems.
Best for: Fits when writers and editors need repeatable style diagnostics plus proofreading, not only sentence-level grammar fixes.
Ginger Software
SMBGrammar and spell checker offering sentence rephrasing and translation features.
Multilingual proofreading with editable, inline rewrites that keep corrections readable within the original text.
Ginger Software performs grammar and spelling correction in a browser workflow and returns editable suggestions rather than just highlight-only markup. Multilingual proofreading is a core capability, with language selection and correction rules applied per language input. The tool also supports document-level checking, which helps teams run proofreading on full texts instead of only single sentences.
A tradeoff appears in heavier editorial workflows that require strict track-changes style redlines and fine-grained revision history controls. Ginger Software works best when the goal is fast correction with clear replacements, such as for customer-facing emails and repeated drafts.
- +Inline rewrites make it faster to accept or revise suggestions
- +Multilingual proofreading supports correction across multiple languages
- +Document-level checking supports longer text review sessions
- +Suggestion explanations help editors judge context before accepting
- –Finer track-changes and revision governance controls are limited
- –Some advanced style guidance needs more manual editorial review
Customer support writers
Proofread multilingual email drafts
Fewer typos and smoother phrasing
Freelance editors
Speed up first-pass proofreading
Lower turnaround time
Show 2 more scenarios
Academic communicators
Proofread full paper sections
More consistent writing quality
Authors check long sections for language errors while keeping edits localized to text.
Compliance reviewers
Clean up formal correspondence
More readable final drafts
Reviewers use replacement suggestions to reduce language issues in formal documents.
Best for: Fits when multilingual teams need quick inline proofreading with clear replacement suggestions.
Grammarly
SMBAI-powered writing assistant offering real-time grammar, spelling, punctuation, and style corrections.
API-based correction layer that exposes Grammarly’s suggestion engine for embedding into third-party editing workflows.
Grammarly delivers a browser-based proofreader with deep grammar and style suggestions that map to annotated spans in a live editor. It supports multilingual proofreading, produces style and tone guidance, and can enforce consistency through reusable writing goals.
Grammarly also offers extensibility via an API-based correction layer that can be embedded into custom workflows where documents or text snippets need automated feedback. Across editing sessions, it prioritizes low-latency suggestions so revisions and acceptance flows stay interactive for long-form writing.
- +Live in-editor suggestions with precise highlighting of affected text spans
- +Multilingual proofreading that keeps grammar feedback aligned with the target language
- +Tone and clarity guidance that updates as drafts change
- +Strong extensibility through an API-based correction layer for custom workflows
- –Over-correction risk for niche domain terminology without targeted rule tuning
- –Track-change style review and redline semantics depend on the host editor
Multilingual writers and global teams
Proofread across supported languages
Targeted feedback per language
Content writers and marketers
Edit blog drafts for readability
More readable, concise drafts
Show 2 more scenarios
Business professionals and teams
Polish workplace email and outreach
Clearer, more consistent messages
Apply contextual corrections and tone guidance for messages like emails and replies.
Authors and book editors
Line-edit long-form manuscripts
More consistent prose
Use annotated grammar, spelling, punctuation, and style suggestions during manuscript revision.
Best for: Fits when teams need interactive grammar feedback plus API-driven correction for custom writing tools.
PaperRater
vertical specialistOnline proofreading and plagiarism detection service for students.
Writing quality and readability scoring presented with inline feedback to guide revision direction.
PaperRater highlights suspected problems in the text and provides correction suggestions that can be applied while reviewing the highlighted spans. It includes writing quality and readability scoring to help writers judge clarity and adjust wording direction. The feedback is oriented around what to fix now, not around configuring policy rules for multiple authors. The primary asset is fast correction feedback on a piece of writing.
- +Fast in-browser highlighting with editable correction suggestions
- +Readable scoring feedback that helps writers adjust clarity quickly
- +Clear issue summaries that support quick revision passes
- –Limited fit for batch review across large document sets
- –No emphasis on API-based integration for automated correction workflows
- –Style feedback can be generic for specialized domain writing
Students and academic writers
Polishing essays before submission
Cleaner final essay text
Freelance content editors
Rapid self-check on blog drafts
Lower error count
Show 2 more scenarios
Small marketing teams
Proofreading email and landing copy
Fewer grammar mistakes
Suggestion-driven edits and feedback summaries improve consistency in short copy.
Business communicators
Tightening client-facing messages
More readable communication
Sentence-level corrections and readability scoring support clearer phrasing under time pressure.
Best for: Fits when writers need quick browser proofreading and actionable edits during drafting.
Hemingway Editor
vertical specialistDistraction-free text editor highlighting complex sentences, passive voice, and adverbs.
Color-coded readability indicators that turn clarity issues into actionable sentence-level edits within the editor view.
Hemingway Editor focuses on rewriting for clarity and concision using readable, sentence-level feedback rather than a broad rulebook of grammar fixes. The web app highlights dense phrasing, passive voice, and overly complex sentences so edits happen in-place while authors revise.
- +Instant, sentence-level readability scoring with clear highlighting
- +Passive voice and wordiness flags that guide targeted rewrites
- +Simple plain-text workflow that stays fast during revision
- +Minimal UI friction that supports quick proofreading passes
- –Limited coverage of advanced grammar edge cases compared to richer grammar engines
- –No native track changes or redline review workflow for acceptance and rejection
- –Batch document processing is not a core focus for large uploads
- –Suggestion latency stays tied to manual review, not automated revision chains
Professionals and technical writers
Simplify complex phrasing in docs
More accessible prose
Students, researchers, and report writers
Break up argument-heavy sentences
Approachable sentence structure
Show 2 more scenarios
Authors and freelance editors
Readability pass before sharing
Clearer structure
Run a quick readability check on manuscript passages to highlight revision priorities for reviewers.
Bloggers, writers, and content editors
Polish publishable article prose
Draft ready for review
Review long sentences and dense wording to make drafts more readable for editorial review.
Best for: Fits when writers want quick sentence clarity checks for drafts that need human editing feedback.
WhiteSmoke
SMBGrammar checking and translation software integrated into web browsers and word processors.
Style guidance mode that targets repeated-phrase consistency and readability-oriented rewrites inside the editing flow.
WhiteSmoke combines a browser-based proofreading workflow with grammar, style, and rewrite suggestions focused on typical document language issues.
- +Inline suggestion flow reduces context switching during proofreading
- +Style-oriented guidance helps keep repeated terms consistent
- +Browser-based access supports quick turnaround for short documents
- +Multilingual proofreading covers common cross-language editing needs
- –Limited evidence of deep CMS integration compared with category leaders
- –Fewer enterprise governance controls than products aimed at large teams
- –Grammar feedback can be conservative, increasing required manual review
- –Batch document processing appears less streamlined than bulk-first editors
Students and academic writers
Iterate on assignment drafts
Cleaner drafts for review
Editors, authors, and professional writers
Reduce verbosity with readability signals
More concise prose
Show 2 more scenarios
Editors and document-focused teams
Apply corrections to existing docs
More consistent document presentation
Review suggested changes inside documents to improve writing and keep formatting consistent.
Bloggers, content writers, and marketers
Proofread web copy during drafting
More readable web copy
Apply inline corrections and readability guidance to article drafts for fewer language issues.
Best for: Fits when writers need fast inline grammar and style correction for general documents.
Sapling
enterpriseAI writing assistant focused on business communication and customer support responses.
Team-level style and terminology enforcement applied via API integration that returns structured inline suggestions.
Sapling routes corrections through an API integration that can sit behind web editors, internal apps, and customer-facing interfaces. Central configuration supports style guide enforcement and terminology consistency so teams apply the same rules across multiple writers and document types. The workflow works best when edits need to be returned as structured suggestions instead of isolated one-off feedback.
- +API-based correction layer supports embedding into custom writing workflows
- +Centralized style enforcement keeps team feedback consistent
- +Terminology checks reduce drift across repeated content
- +Structured suggestions fit revision workflows instead of vague comments
- –Value depends on integration effort for best inline experience
- –Rule tuning can raise false positives for edge-case phrasing
- –Coverage varies by language and document formatting complexity
- –Batch document processing depth can lag specialized proofreaders
Product marketing teams
Standardize copy across landing pages
Fewer edits in final review
Support documentation teams
Keep articles consistent under pressure
More consistent customer-facing tone
Show 2 more scenarios
Localization teams
Reduce copy inconsistency across locales
Lower terminology mismatch
Terminology checks support consistent term usage while writing localized drafts.
Compliance-heavy organizations
Govern high-volume content edits
More predictable revision standards
Centralized rules support consistent proofreading behavior across authors and documents.
Best for: Fits when teams need consistent, API-integrated proofreading guidance across many writers and apps.
Reverso
vertical specialistTranslation platform with integrated grammar and spell checking capabilities.
Context-focused sentence rewriting suggestions that prioritize readable phrasing over heavy document-level markup.
Reverso provides browser-based proofreading built around translation-style writing assistance, including grammar and phrasing suggestions for multilingual text. Its strongest use case is iterating on sentences where word choice and tone matter, because suggestions are tightly scoped to readable segments.
- +Inline grammar and style suggestions are easy to apply sentence by sentence
- +Multilingual writing support fits mixed-language drafting workflows
- +Suggestion edits stay focused on phrasing rather than reformatting content
- +Quick correction loops work well for short-to-medium paragraphs
- –Limited evidence of track changes style redline review controls
- –Batch document processing is not a primary workflow
- –Governance features like RBAC and audit logs are not apparent
- –Deeper style guide enforcement is limited compared with rule-based systems
Multilingual writers and professionals
Proofread sentences while drafting
Sentence-level correction suggestions
Students and language learners
Learn vocabulary through examples
Better vocabulary retention
Show 2 more scenarios
Editors and language reviewers
Post-edit translations faster
Faster sentence-level post-editing
Compare alternatives and rephrase target sentences without restarting the full translation.
French and Spanish learners, writers, professionals
Check idioms and conjugations
More informed phrasing choices
Inspect idioms, conjugations, and alternate translations with sentence examples in French or Spanish.
Best for: Fits when multilingual drafts need fast sentence-level grammar and phrasing fixes.
QuillBot
SMBQuillBot provides grammar checking, spelling correction, paraphrasing, and writing refinement in a browser editor and extensions.
Integrated rewrite suggestions that pair with proofreading fixes to reduce rework during iterative revisions.
QuillBot is an online proofreading tool that combines grammar checking with rewrite assistance for sentence-level improvement. It focuses on detecting wording issues and proposing alternatives, which helps when edits must preserve meaning and readability.
- +Rewrite suggestions support line-by-line edits alongside corrections
- +Clear inline suggestions reduce effort compared with manual rephrasing
- +Fast browser workflow supports short proofreading passes
- +Consistent output for sentence clarity without heavy formatting overhead
- –Grammar detection can miss context-dependent errors
- –Style results may require multiple iterations to match a specific voice
- –Batch editing for large documents is limited by interface-first workflow
- –No detailed review controls like full redline acceptance history
Online writers and professionals
Proofread in common browser editors
Faster common corrections
Content writers and students
Condense selected passages
Shorter text with key points
Show 2 more scenarios
Content writers and website editors
Refresh repeated website wording
Updated copy with less repetition
Create alternate wording for existing articles or recurring website content to reduce repetition.
Marketing writers and small business teams
Polish campaign and promo drafts
Alternative draft versions
Adjust tone and length using controlled rewrites to produce alternative marketing versions.
Best for: Fits when sentence-level rewrite plus proofreading is needed for drafts and email-length documents.
Virtual Writing Tutor
vertical specialistFree grammar checker and word counter designed for ESL learners and educators.
Feedback explanations are tied to the exact suggested edit so revisions can be accepted or rewritten without losing context.
Virtual Writing Tutor provides browser-based proofreading feedback that focuses on grammar, clarity, and writing mechanics as edits are reviewed. It can generate line-level suggestions with explanations that support revision decisions, including cases where writing needs rephrasing rather than only punctuation fixes.
- +Line-level suggestions come with reasoning for faster revision decisions.
- +Works in a browser workflow without export-and-reimport cycles.
- +Clear separation between grammar corrections and style clarity issues.
- +Good at catching common punctuation and tense consistency problems.
- –Deep style guide enforcement for complex house rules is limited.
- –Batch document throughput is slower than dedicated bulk processors.
- –Suggestion latency can increase on long pasted documents.
- –False positives can require manual review on nuanced phrasing.
English language learners and individual writers
Check pasted drafts for mechanics
Errors and suggested corrections
Learners developing English writing skills
Improve wording and sentence clarity
More readable wording
Show 2 more scenarios
Students and educators
Practice spelling with audio prompts
Spelling correctness feedback
Work through audio-prompted spelling exercises and compare answers to practice word lists.
English language learners
Practice pronunciation alongside writing
Pronunciation practice support
Use pronunciation tools together with writing resources for broader English language practice.
Best for: Fits when individual writers need readable grammar guidance and quick rephrase suggestions during drafting.
Conclusion
After evaluating 10 online proofreading software, ProWritingAid stands out as our overall top pick — it scored highest across our combined criteria of features, ease of use, and value, which is why it sits at #1 in the rankings above.
Use the comparison table and detailed reviews above to validate the fit against your own requirements before committing to a tool.
How to Choose the Right Online Proofreading Software
This buyer's guide covers PaperRater, Ginger Software, Sapling, Grammarly, ProWritingAid, Hemingway Editor, WhiteSmoke, Reverso, Virtual Writing Tutor, and QuillBot for browser-based grammar and style correction.
The rankings focus on how each online proofreading software handles inline edits, readability and style feedback, and automation depth such as API-based correction layering in tools like Sapling and Grammarly.
Online Proofreading Software for Browser-Based Grammar, Style, and Readability Feedback
Online proofreading software runs a grammar engine and style guidance directly in a browser workflow to return highlighted issues and editable suggestions inside the text. The strongest tools pair sentence-level corrections with feedback that helps writers revise without switching contexts.
PaperRater delivers writing quality and readability scoring with inline guidance that supports faster revision direction. Sapling shifts that same proofreading output into an API-based correction layer for consistent team-level style and terminology enforcement across integrated writing workflows.
Inline edit workflow, readability insight, and correction automation
Online proofreading software has to deliver edits where the writer is working, which is why inline highlighting with editable suggestions matters in tools like PaperRater, Grammarly, and Reverso. These tools reduce context switching by binding each recommendation to the exact text span that needs revision.
Readability and style diagnostics also determine how much work stays outside the editor. PaperRater uses writing quality and readability scoring, ProWritingAid adds style drift and consistency reports, and Hemingway Editor focuses on color-coded clarity indicators to guide sentence-level rewrites.
Inline editable suggestions inside the editing view
PaperRater and Grammarly provide fast in-editor highlighting with editable correction suggestions. Ginger Software and Reverso apply sentence-level rewrite suggestions that writers can accept or revise without leaving the draft.
Readability scoring and clarity indicators
PaperRater pairs writing quality and readability scoring with inline feedback. Hemingway Editor adds color-coded readability indicators with passive voice and wordiness flags to steer quick sentence edits.
Style and consistency reporting across documents
ProWritingAid generates category-based style and consistency diagnostics that identify repeated phrasing patterns across a document. WhiteSmoke focuses on repeated-phrase consistency and readability-oriented rewrites during the inline proofreading flow.
API-based correction layer for team workflows
Sapling provides team-level style and terminology enforcement through API-based correction that returns structured inline suggestions. Grammarly exposes an API-based correction layer intended for embedding into third-party editing workflows for interactive grammar feedback.
Multilingual proofreading support
Ginger Software delivers multilingual proofreading with editable inline rewrites. Grammarly and Reverso also support multilingual drafting workflows by keeping grammar feedback aligned with the target language.
Choose by editing workflow, feedback type, and automation depth
The right online proofreading software depends on whether the primary goal is sentence-level correction, document-level style control, or automated correction inside custom tools. PaperRater and Hemingway Editor prioritize rapid inline clarity feedback, while ProWritingAid and WhiteSmoke lean toward recurring pattern and style consistency.
Automation depth is the main fork for teams and platform builders. Sapling and Grammarly both center API-based correction layering, while tools like Ginger Software and Virtual Writing Tutor focus on browser-first proofreading without emphasizing integration depth.
Pick the feedback type that matches revision behavior
If the drafting loop depends on readability and direction for clarity, PaperRater and Hemingway Editor provide scoring and sentence-level highlighting that point directly to revisions. If the workflow needs repeatable style diagnostics across a long document, ProWritingAid produces category-based style and consistency reports instead of only sentence fixes.
Decide whether API embedding is required for the workflow
If proofreading has to run inside existing apps with interactive suggestions returned as a structured correction layer, Sapling and Grammarly provide API-based correction that targets team enforcement or third-party editing workflows. If proofreading stays browser-based for individual or small-team drafting, tools like Ginger Software and Reverso focus on inline rewrites without emphasizing automated correction layering.
Match governance and track-change expectations to the tool
If acceptance and rejection needs track-change style semantics tied to the host editor, Grammarly’s redline semantics depend on the editor integration path. If a product’s revision governance controls are limited, Ginger Software and WhiteSmoke place more of the review burden on manual editorial handling.
Evaluate false positives against the domain you write in
If edge-case phrasing is common, Sapling can require rule tuning that increases false positives on unusual phrasing. If domain terminology precision matters, Grammarly can trigger over-correction risk for niche terminology without targeted rule tuning.
Confirm whether batch throughput is part of the requirement
If the workflow includes batch document processing across large sets, PaperRater’s limited fit for batch review becomes a constraint. If throughput is slower than dedicated bulk processors, Virtual Writing Tutor can lag behind bulk-focused expectations for large-scale review.
Who benefits from inline proofreading, style analytics, or API-based correction
Writers and editors who work inside a browser-driven draft benefit from tools that highlight issues and offer editable inline rewrites. PaperRater, Hemingway Editor, and Reverso reduce the edit loop by making each suggestion actionable inside the document view.
Teams that want consistent terminology and repeatable guidance across many writers should prioritize API-integrated correction workflows. Sapling and Grammarly provide correction layers that support centralized style enforcement and interactive feedback inside integrated writing tools.
Individual writers who want instant clarity flags during drafting
Hemingway Editor highlights clarity issues with color-coded indicators and targets passive voice and wordiness. PaperRater pairs writing quality and readability scoring with inline feedback to guide revisions quickly.
Multilingual teams that need inline rewrites across languages
Ginger Software supports multilingual proofreading with editable inline rewrites. Reverso and Grammarly keep grammar feedback aligned with the target language for mixed-language drafting.
Teams and platform builders that need consistent rules in integrated workflows
Sapling applies team-level style and terminology enforcement through API-based correction that returns structured inline suggestions. Grammarly offers an API-based correction layer designed for embedding into third-party editing workflows.
Editors who manage style drift across long documents
ProWritingAid identifies repeated phrasing patterns and style drift using style and consistency reports across an entire document. WhiteSmoke supports repeated-phrase consistency and readability-oriented rewrites inside the inline editing flow.
Writers who want explanations tied to each suggested change
Virtual Writing Tutor attaches feedback explanations directly to the exact suggested edit so revisions remain context-preserving. Its browser workflow avoids export and reimport cycles that slow down acceptance decisions.
Common buying pitfalls for Online Proofreading Software
A common failure mode is selecting a tool for the wrong unit of feedback. Sentence-level clarity tools like Hemingway Editor and PaperRater are not substitutes for document-level style diagnostics like ProWritingAid when style drift is the core problem.
Another pitfall is assuming deep automation without checking integration emphasis. PaperRater lacks emphasis on API-based integration for automated correction workflows, while Sapling and Grammarly explicitly target API-based correction layering for embedded proofreading.
Expecting document-wide style drift prevention from a sentence-level clarity checker
ProWritingAid builds style and consistency reports that track repeated phrasing patterns across a document. Hemingway Editor focuses on readability indicators and sentence-level edits, so it does not supply the same category-based diagnostics.
Assuming API embedding is available when the tool is primarily browser-first
PaperRater prioritizes quick browser proofreading with readability scoring and editable inline feedback. Sapling and Grammarly specifically center API-based correction layering for integration into custom writing workflows.
Ignoring false positive workload for rule-tuned or category-heavy guidance
Sapling can increase false positives for edge-case phrasing when rule tuning raises sensitivity. ProWritingAid can raise suggestion density that increases false positive review workload.
Choosing a tool without matching governance needs to track-change expectations
Grammarly’s track-change style review and redline semantics depend on the host editor integration path. Ginger Software limits finer track-changes and revision governance controls, which pushes governance into manual review.
Overlooking batch throughput limitations for large review sets
PaperRater is a limited fit for batch review across large document sets. Virtual Writing Tutor has slower batch throughput than dedicated bulk processors.
How We Selected and Ranked These Tools
We evaluated PaperRater, Ginger Software, Sapling, Grammarly, ProWritingAid, Hemingway Editor, WhiteSmoke, Reverso, Virtual Writing Tutor, and QuillBot on editing accuracy and how each tool surfaces inline, actionable suggestions. Features carried 40% of the weight, ease and value each carried 30%, and the ranking favored tools that reduce revision friction through tightly bound inline feedback. PaperRater separated itself by combining writing quality and readability scoring with fast in-browser highlighting and editable correction suggestions that guide revision direction during drafting.
Frequently Asked Questions About Online Proofreading Software
How do Grammarly and Sapling differ when proofreading must run inside existing tools?
Which tool is better for multilingual proofreading with inline rewrites editors can evaluate quickly?
What breaks if an editing workflow requires batch document processing instead of single-text proofreading?
When should editors choose ProWritingAid over Grammarly for style enforcement across a full document?
How do acceptance flows differ between Hemingway Editor and PaperRater for in-place revisions?
How do tools handle document-level output like readability scoring and revision-oriented diagnostics?
Which software is most suited for teams that need consistent terminology checks across repeated document types?
What tradeoff appears when a proofreading tool focuses on rewriting for clarity versus deep grammar annotation?
When integrating into automated pipelines, where does Grammarly’s API correction layer fit better than browser-only proofreading?
Tools reviewed
Primary sources checked during evaluation.
Referenced in the comparison table and product reviews above.
Funding and competing interests
This study was co-funded by several of the vendors assessed in it. No single vendor funded it. Funders could propose the market studied.
They had no role in selecting vendors, setting or weighting criteria, analysing data or drawing conclusions, and they received the same factual-accuracy check as every other vendor assessed.
Market definition, inclusion rules and criteria weights were fixed by an editor before research began and did not change afterwards. Editorial process →
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