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Head-to-head · Readability Checkers

Eclipse Readability Studio vs Slick Write

  • Updated Oct 2026
  • Both researched from official sources
  • 3 checks side by side
Higher score Eclipse Readability Studio #1 in Readability Checkers 9.4/10 Free plan Free plan✓ 1 of 4 features Visit site
Slick Write #7 in Readability Checkers 8.2/10 Free plan Free plan✓ 1 of 4 features Visit Slick Write

Eclipse Readability Studio leads on 0 checks, Slick Write on 0, and 3 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreEclipse Readability Studio · 9.4/10
  • Free planboth

Eclipse Readability Studio scores higher on our rubric for readability checkers: 9.4 against 8.2 out of 10; our editors rank them #1 and #7.

Eclipse Readability Studio is the better fit for multilingual desktop and document analysis. Slick Write is the better fit for free readability and style checking in browsers.

  • Eclipse Readability Studio fits best

    Multilingual desktop and document analysis

  • Slick Write fits best

    Free readability and style checking in browsers

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Side by side

Feature Eclipse Readability Studio 9.4/10 Visit ↗ Slick Write 8.2/10 Visit ↗
At a glance
Editor score 9.4 8.2
Ranking #1 in Readability Checkers #7 in Readability Checkers
Best for Multilingual desktop and document analysis Free readability and style checking in browsers
Pricing model Free Free
Starting price Free plan Free
Free plan ✓ ✓
Free trial — —
Deployment Desktop Cloud, Browser extension
Platforms Windows, macOS, Linux Web, Chrome extension
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business
Features Eclipse Readability Studio 1/4 · Slick Write 1/4
Sentence analysis Not checked yet Not checked yet
Clarity recommendations ✓ (best) Not checked yet
Browser extension Not checked yet ✓ (best)
API access Not checked yet Not checked yet
Specs
Readability formulas Not checked yet Not checked yet
Language support Multilingual Not checked yet
Our review
Pros
  • More than 60 readability tests across English, Spanish, and German
  • Batch and individual document analysis with improvement recommendations
  • Supports Word, OpenDocument, RTF, HTML, PostScript, and text files
  • Free access to grammar, style, flow, and readability checks
  • Analyzes vocabulary variety, passive voice, repetition, and sentence structure
  • Chrome extension supports Google Docs, WordPress, selections, and text boxes
Cons
  • Language coverage is limited to English, Spanish, and German
  • Designed for desktop use on Windows, macOS, and Linux
  • Its feature set centers on document analysis rather than broader writing workflows
  • Browser-focused platform coverage limits where it can be used
  • Checks English writing rather than offering broad language coverage
  • Its wide set of analyses may require time to interpret effectively
Our verdict

Eclipse Readability Studio is a free, open-source desktop application for evaluating document readability and grammar. It is aimed at educators, government and military teams, healthcare organizations, publishers, and students who need…

Read the review →

Slick Write is a free, browser-based writing checker for bloggers, novelists, SEO professionals, students, and other writers working in English. It combines grammar error checking with stylistic issue detection, sentence structure…

Read the review →
  1. Eclipse Readability StudioReadability Checkers 9.4Free plan
  2. Slick WriteReadability Checkers 8.2Free plan

Strengths and trade-offs

  • Eclipse Readability Studio — where it wins

    • More than 60 readability tests across English, Spanish, and German
    • Batch and individual document analysis with improvement recommendations
    • Supports Word, OpenDocument, RTF, HTML, PostScript, and text files

    Where it doesn't

    • Language coverage is limited to English, Spanish, and German
    • Designed for desktop use on Windows, macOS, and Linux
    • Its feature set centers on document analysis rather than broader writing workflows
  • Slick Write — where it wins

    • Free access to grammar, style, flow, and readability checks
    • Analyzes vocabulary variety, passive voice, repetition, and sentence structure
    • Chrome extension supports Google Docs, WordPress, selections, and text boxes

    Where it doesn't

    • Browser-focused platform coverage limits where it can be used
    • Checks English writing rather than offering broad language coverage
    • Its wide set of analyses may require time to interpret effectively
  • Eclipse Readability Studio9.4/10 · Free plan

    A free, open-source desktop checker for detailed multilingual document analysis.

    Visit siteFull verdict →
  • Slick Write8.2/10 · Free plan

    A free browser checker that combines grammar review with detailed style and readability analysis.

    Visit Slick WriteFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update