Calibre alternatives · Technical SEO
Free alternatives to Calibre
Calibre has no free plan. 52 of the 87 other technical SEO tools in this directory are free or have a free plan.
Calibre is a paid product with a free trial, starting at $75 per month, billed monthly or $900 a year. 21 of them have no paid plan at all; the rest pair a free plan with paid ones.
52 tools · Listings checked up to Nov 12, 2026 · Where the facts come from
The 12 closest to Calibre
- Free plan · from $4.99/mo
GTmetrix
Page speed testing with Lighthouse reports, monitoring and an API
What is free: Free Basic account; the API docs give it 2 tests at a time and a lower API rate limit than PRO. Other limits could not be read.
- GTmetrix starts at $4.99 per month, billed yearly ($5.99 billed monthly). Calibre starts at $75 per month, billed monthly or $900 a year.
- GTmetrix has a free plan. Calibre does not, though it has a free trial.
- Free plan · from $180/yr
WebPageTest
Page speed tests from real browsers in locations around the world
What is free: Starter plan: 150 test runs a month (up to 3 per test), 30 test locations, Lighthouse, filmstrip and video, Opportunities, 3-step scripts and 60 days of history.
- WebPageTest starts at $180 per year for 1,000 test runs a month ($18.75 billed monthly). Calibre starts at $75 per month, billed monthly or $900 a year.
- WebPageTest has a free plan. Calibre does not, though it has a free trial.
- WebPageTest also covers dashboards.
- Free plan · from $75/mo
Treo
Core Web Vitals dashboard built on CrUX data and Lighthouse runs
What is free: a personal account with 5 sites and 2 years of history, and CrUX data for 50 pages. No Lighthouse monitoring.
- Treo starts at $75 per month, billed annually ($99 billed monthly). Calibre starts at $75 per month, billed monthly or $900 a year.
- Treo has a free plan. Calibre does not, though it has a free trial.
- Free plan · from $16/mo
SpeedVitals
Page speed tests from 35 locations, TTFB checks and speed monitoring
What is free: 15 speed tests and 15 TTFB tests a week, 1 daily monitoring slot, RUM for 1 site up to 5,000 page views a month, and 1 month of test reports.
- SpeedVitals starts at $16 per month, billed yearly ($19 billed monthly). Calibre starts at $75 per month, billed monthly or $900 a year.
- SpeedVitals has a free plan. Calibre does not, though it has a free trial.
- SpeedVitals also covers web analytics.
- Free plan · from $7/mo
NitroPack
Automatic speed optimization and CDN for WordPress and WooCommerce
What is free: 1 website, 1,000 pageviews and 1GB of CDN bandwidth a month, 1 team member, no credit card needed.
- NitroPack starts at $7 per month, billed annually ($8 billed monthly). Calibre starts at $75 per month, billed monthly or $900 a year.
- NitroPack has a free plan. Calibre does not, though it has a free trial.
- Free
Google Search Console
Free Google reports on a site's search traffic, indexing and issues
What is free: Everything. There is no paid plan.
- Google Search Console is free. Calibre starts at $75 per month, billed monthly or $900 a year.
- Google Search Console has a free plan. Calibre does not, though it has a free trial.
- Google Search Console also covers site audit and schema markup.
- Free
PageSpeed Insights
Free Google speed test with real-user Core Web Vitals and Lighthouse
What is free: Everything. There is no paid plan.
- PageSpeed Insights is free. Calibre starts at $75 per month, billed monthly or $900 a year.
- PageSpeed Insights has a free plan. Calibre does not, though it has a free trial.
- Free
Chrome UX Report
Google's public dataset of real Chrome users' Core Web Vitals
What is free: Everything. There is no paid plan.
- Chrome UX Report is free. Calibre starts at $75 per month, billed monthly or $900 a year.
- Chrome UX Report has a free plan. Calibre does not, though it has a free trial.
- Chrome UX Report also covers dashboards.
- Free
Yellow Lab Tools
Free open-source audit of a page's speed and front-end code
What is free: Everything. There is no paid plan.
- Yellow Lab Tools is free. Calibre starts at $75 per month, billed monthly or $900 a year.
- Yellow Lab Tools has a free plan. Calibre does not, though it has a free trial.
- Only Yellow Lab Tools lists macOS and Linux apps.
- Yellow Lab Tools is open source and self-hostable, according to its own site.
- Free plan · from $10/mo
Website Crawler
Cloud SEO crawler, data scraper and page monitor priced by pages
What is free: Basic plan: 1,000 pages a month, 1 project, the HTML crawler, basic SEO reports, 3 page monitors and API access. Advanced reports show only 5 URLs.
- Website Crawler starts at $10 per month for 2,000 pages, billed monthly. Calibre starts at $75 per month, billed monthly or $900 a year.
- Website Crawler has a free plan. Calibre does not, though it has a free trial.
- Website Crawler also covers site audit.
- Free plan · from $19/mo
Webmatik
Website audit scoring SEO, speed, AI readiness and design together
What is free: 3 free checks a month: an estimated score range and every issue found by severity, with one explained in full. No credit card needed.
- Webmatik starts at $19 per month for 10 audits. Calibre starts at $75 per month, billed monthly or $900 a year.
- Webmatik has a free plan. Calibre does not, though it has a free trial.
- Only Webmatik lists a browser extension.
- Webmatik also covers reports, site audit and AI search visibility.
- Free plan · from $39/mo
SiteGuru
SEO audit tool that turns site crawls into a prioritized task list
What is free: After the 6-week trial the account can stay on a free plan with SiteGuru's free features; the pricing page does not list what those include.
- SiteGuru starts at $39 per month for 5 websites, billed annually ($49 billed monthly). Calibre starts at $75 per month, billed monthly or $900 a year.
- SiteGuru has a free plan. Calibre does not, though it has a free trial.
- SiteGuru also covers reports, site audit, backlink analysis, schema markup and internal linking.
40 more that are free or have a free plan
- Beam Us Up
- Spotibo
- Siteliner
- Redirection.io
- Redirect.pizza
- Headless-Render-API
- SEO4Ajax
- Request Metrics
- sitespeed.io
- Unlighthouse
- Hreflang Tags Testing Tool
- Bing Webmaster Tools
- Lighthouse
- Yandex Webmaster
- Baidu Search Resource Platform
- httpstatus.io
- LibreCrawl
- squirrelscan
- Integrity
- Visual SEO Studio
- XML-Sitemaps.com
- Dr. Link Check
- Dead Link Checker
- Xenu's Link Sleuth
- SiteAnalyzer
- Schema.dev
- Schemantra
- SEO Gets
- Search Analytics for Sheets
- Google Rich Results Test
- Schema Markup Validator
- Naver Search Advisor
- SiteOne Crawler
- SEOnaut
- CrawlCenter
- SEO Tracer
- LinkOK
- TechnicalSEO.com Tools
- Redirect Mapper
- Visual Sitemaps
Common questions
Is there a free alternative to Calibre?
Yes. GTmetrix, WebPageTest, Treo, SpeedVitals, NitroPack, Google Search Console, PageSpeed Insights, Chrome UX Report and 44 more are free or have a free plan.
Does Calibre have a free plan?
Calibre has no free plan. Calibre is a paid product with a free trial, starting at $75 per month, billed monthly or $900 a year.
When was this checked?
Each listing shows its own date. On this page they run from Oct 23, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Calibre: the alternatives its listing names first, then the tools that share the most features with it.