Alternatives to Calibre for all platforms with any license

Platforms

Desktop

Web / Online

Browsers

Other Platforms

  • Gtmetrix icon

    Gtmetrix

    GTmetrix is a free tool that analyzes your page's speed performance. Using Page Speed and YSlow, GTmetrix generates scores for...

    Free Web / Cloud

  • PageSpeed Insights icon

    PageSpeed Insights

    PageSpeed is addon for Firebug (debugger addon for Mozilla Firefox ) for analyzing of page loading process and suggesting to webmaster how...

    Open Source Mac Windows Linux Firebug Chrome Firefox

  • Yahoo! YSlow icon

    Yahoo! YSlow

    YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages. YSlow...

    Open Source Mac Windows Linux Firebug Chrome Safari ... Opera Firefox

  • WebPagetest icon

    WebPagetest

    Run a free website speed test from multiple locations around the globe using real browsers (Firefox, IE, Chrome, Android and iOS) and...

    Open Source Web / Cloud

  • DareBoost icon

    DareBoost

    DareBoost is an online tool to test, analyze and monitor your website: speed, SEO, quality, security. All you need for website...

    Freemium Web / Cloud

  • Web Page Test icon

    Web Page Test

    Run a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization...

    Free Personal Web / Cloud

  • Raven Tools Site Auditor icon

    Raven Tools Site Auditor

    Analyze your site to find SEO issues that keep your site from ranking on search engines.

    Freemium Web / Cloud

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