Calibre Alternatives & Reviews


Calibre is a piece of software that tests different user metrics for your website so you can better troubleshoot how different customers from around the world will interact with your site based on its performance.
Rating (4.00)
Browser Windows macOS Unix

9 Best Alternatives to Calibre

Sigil icon


NOTICE: If after installing Sigil v0. 9. 13 (or higher), Sigil is crashing, wont run correctly, or wont start at all, check out this wiki notice before filing a report or asking for assistance.
DareBoost icon


All-in-one service for website speed test, web performance monitoring and website analysis (speed, SEO, quality, security). Web performance has never been so easy.
Time Doctor icon

Time Doctor

Time Doctor is an employee time tracking software that helps you and your team get a lot more done each day. Try it for free - no credit card required!
Gtmetrix icon


GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.
Adobe Digital Editions icon

Adobe Digital Editions

Optimize your reading experience with the best eBook reader across formats.
DeskTime icon


DeskTime is a real-time time tracking software that analyzes productivity. The only fully automatic time tracking solution. Try free 14-day trial today!
WebPagetest icon


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

Cloud Contact Center

Turbo charge your customer operations - inbound or outbound, sales or customer care, voice or multichannel - with our innovative cloud contact center solution.

You can add more alternatives to this item by signing up on

Filter Platforms
Browser (5)
iOS (5)
Android (5)
Windows (4)
Web (4)
Unix (3)
macOS (3)
Filter Features
Absence Calendar
Activity Monitoring
Activity Tracking
Agent Activity Records
App Tracking
Assess Productivity
Avoid Distractions
Big Data Backbone
CSV Export
Client Login
Contact Management
Cross-system Measures
Custom Email Reports
Custom Visuals
Dashboards And Scheduling
Digital Publication
E-book Editor
E-book Publisher
EBook Manager
EPub Creator
Easy Data Ingestion
Easy Data Integration
Extensible Data Model
Global Visibility
Hourly Employee Tracking
Mobile Time Tracking
Multi-source Linking
Offline Time Tracking
Offline Tracking
Online Support
Online Time Tracking
Productivity Reporting
Project Time Tracking
Read EBook
Real Time Monitoring
Reporting Tools
Screenshot Capture
Screenshot Recording
Self Monitoring
Sick Leave Tracking
Time Tracking
Time Tracking By Project
URL Tracking
Universal Data Dictionary
User Activity Monitoring
Video Turorials
View All Real-time Data
Visual Analytics
What-if Analysis

Pros of Calibre

Nothing to install on your server to use
Lightweight and keeps track of several metrics
Test site performance from anywhere in the world
Free 14-day trial with tiered plans

Cons of Calibre

Free trial doesn't give a full month of data
Pricing is expensive for small businesses

Calibre Icon Features of Calibre

Don't need to install anything to begin monitoring
Automatic Snapshots of performance taken daily
Google Lighthouse is built-in
Test from anywhere across the globe
Emulate specific devices for better troubleshooting
View user-focused metrics
Detailed analysis of reports
Performance budgets alert you to problems

Calibre Reviews

by grex about Calibre on March 31, 2018:
Calibre is a website development tool that's designed to allow you to see the same thing that your customer views when they access your website, no matter where they're at in the world. It's useful for troubleshooting problems with specific devices, especially if you don't have the device in-house to test on.

Automatic Snapshots allow you to test performance once the software has been enabled to work with your site, so you can quickly gather data on how your site is performing across the world. And the best thing is if reports suggest a problem from specific devices or areas of the world, you can pull up those metrics immediately to try and duplicate the situation.

The performance budget feature allows you to set up a metric that you expect your site to perform at for anywhere in the world. Any time that budget is met or exceeded, you're alerted so you can instantly address the problem. You can even set up real-time alerts and notifications to your smartphone using integrations with email and Slack.

It also includes Google Lighthouse support, so you can quickly identify which parts of your website are causing performance problems and address them without a lot of guesswork.

Calibre does offer a free 14-day trial with no sign-up required, but that's not enough time to get a full month's worth of data. The personal option also allows you to track two sites, but if you have more than that, you'll need to consider one of the more expensive Power and Pro plans. Enterprise solutions are also available for those who manage up to 50 different websites.

Perhaps the most beneficial feature of this software is being able to test and troubleshoot performance on devices you don't own. Replicating issues reported by your customers gives you a better idea of how they're interfacing with your website and allows you to provide a better experience for repeat customers.
Feel free to submit your own opinion on Calibre!

Calibre Icon Share your opinion on Calibre

/ 5
Review Summary
Calibre has currently been reviewed with 1 opinions.

In total, that's a combined rating of 4.00 out of 5 stars.

Calibre Icon Additional Calibre Reviews, Pros & Cons and Similar Software

New: our editorial list of additional articles. We decided to gather informartion all around the internet and present you a list of helpful, external links to interesting reads about Calibre reviews, pros & cons and similar software.
0 persons liked this post.
helpful or   not helpful
0 persons liked this post.
helpful or   not helpful
0 persons liked this post.
helpful or   not helpful
0 persons liked this post.
helpful or   not helpful
0 persons liked this post.
helpful or   not helpful
0 persons liked this post.
helpful or   not helpful

Comments on Calibre

Any helpful suggestions to make on the list of alternatives to Calibre? Feel free to write a comment!

About This Article

This page about Calibre was composed by and published by It was last updated on and has been viewed 2598 times.

Did you like this article? Please rate it!

18 out of 21 people liked this article. This is equivalent to a star rating of 4.29 / 5.

Vote Now:

Like or Dislike

Recommendations For This Article