Servers

Performance

71 technologies: what each one does, whether it is SaaS or open source, its price range and its website.
  • Priority Hints

    4M sites

    Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.

  • LazySizes

    609K sitesOpen source

    LazySizes is a JavaScript library used to delay the loading of images (iframes, scripts, etc) until they come into view.

  • Cloudflare Rocket Loader

    80.8K sites

    Cloudflare Rocket Loader is responsible for prioritising over website's content by delaying the loading of Javascript until rendering.

  • Autoptimize

    77K sitesFreemium · One-time

    Autoptimize is a WordPress plugin that optimises website performance by aggregating, minifying, and compressing HTML, CSS, and JavaScript files.

  • EWWW Image Optimizer

    55.1K sitesOpen source

    EWWW Image Optimizer is an image optimisation WordPress plugin designed to improve the performance of your website.

  • WP-Optimize

    47.8K sitesFreemium · $ · Subscription

    WP-Optimize is an all-in-one WordPress plugin that cleans your database, compresses your large images and caches your site.

  • WP Fastest Cache

    40.5K sitesFreemium · One-time

    WP Fastest Cache is one of a number of plugins for WordPress designed to accelerate the performance of your website.

  • Lozad.js

    30.8K sitesOpen source

    Lozad.js is a lightweight lazy-loading library that's just 535 bytes minified & gzipped.

  • Performance Lab

    24.6K sites

    Performance plugin from the WordPress Performance Group, which is a collection of standalone performance modules.

  • Google PageSpeed

    24.2K sites

    Google PageSpeed is a family of tools designed to help websites performance optimisations.

  • Google Cloud Trace

    21.2K sites

    Google Cloud Trace is a distributed tracing system that collects latency data from applications and displays it in the Google Cloud Console.

  • Turbo

    19.6K sitesOpen source

    Turbo is a JavaScript framework for building fast web applications.

  • Modern Image Formats

    17.8K sites

    Performance plugin from the WordPress Performance Team, which adds support for outputting images in WebP or AVIF format and supports the `picture` element to enable format fallbacks.

  • Azure Monitor

    17.1K sitesSaaSPay as you go

    Azure Monitor collects monitoring telemetry from a variety of on-premises and Azure sources. Azure Monitor helps you maximise the availability and performance of your applications and services.

  • Perfmatters

    17K sitesSaaS$ · Subscription

    Perfmatters is a performance optimisation plugin for WordPress websites.

  • LazySizes unveilhooks plugin

    14.1K sitesOpen source

    LazySizes unveilhooks plugin extends lazySizes to lazyload scripts/widgets, background images, styles and video/audio elements.

  • Cloudflare Zaraz

    12.4K sitesSaaSFreemium · Quote

    Guide

    Cloudflare Zaraz gives you complete control over third-party tools and services for your website, and allows you to offload them to Cloudflare’s edge, improving the speed and security of your website.

  • NitroPack

    10.9K sites

    NitroPack creates optimised HTML cache for fast page loading experience.

  • Speculative Loading

    10K sites

    Performance plugin from the WordPress Performance Team, which adds support for the Speculation Rules API, by which certain URLs are dynamically prefetched or prerendered based on user interaction.

  • a3 Lazy Load

    9.7K sitesFreemium · $ · Subscription

    a3 Lazy Load is a mobile oriented, very simple to use plugin that will speed up sites page load speed.

  • Image Placeholders

    8.7K sites

    Performance plugin from the WordPress Performance Team, which determines and stores the dominant color for newly uploaded images in the media library, then uses that as a placeholder background during front end image loads.

  • Optimization Detective

    8.4K sites

    Performance plugin from the WordPress Performance Team, which captures real user metrics about what elements are displayed on the page across a variety of device form factors (e.g. desktop, tablet, and phone) in order to apply loading optimizations.

  • Instant.Page

    7.6K sitesOpen source

    Instant.Page is a JavaScript library which uses just-in-time preloading technique to make websites faster.

  • Turbolinks

    7.1K sitesOpen source

    Turbolinks is a Rails feature, available as a gem and enabled by default in new Rails apps. It is intended to speed up navigating between pages of your application.

  • Embed Optimizer

    6.8K sites

    Performance plugin from the WordPress Performance Team, which optimizes embeds by lazy loading them only as they come into view.

  • Enhanced Responsive Images

    6.6K sites

    Performance plugin from the WordPress Performance Team, which improves image sizes attribute accuracy and implements the HTML spec for adding sizes='auto' to lazy loaded images.

  • Image Prioritizer

    6.1K sites

    Performance plugin from the WordPress Performance Team, which optimizes the loading of images which are the LCP (Largest Contentful Paint) element, including both img elements and elements with CSS background images.

  • Performant Translations

    5.6K sites

    Performance plugin from the WordPress Performance Team, which makes internationalization/localization in WordPress faster than ever before.

  • Intersection Observer

    5.6K sites

    Intersection Observer is a browser API that provides a way to observe the visibility and position of a DOM element relative to the containing root element or viewport.

  • Quicklink

    5.3K sites

    Quicklink is a JS library which aims to be a drop-in solution for sites to prefetch links based on what is in the user's viewport.

  • Partytown

    4.9K sitesOpen source

    Partytown is a lazy-loaded library to help relocate resource intensive scripts into a web worker, and off of the main thread.

  • FlyingPress

    4.8K sites$ · Subscription

    FlyingPress is a WordPress plugin that helps to improve website performance by optimising various aspects of a WordPress site. The plugin offers a range of features, including caching, image optimisation, lazy loading, database optimisation, and more.

  • Booster Page Speed Optimizer

    4.2K sitesFreemium

    The Page Speed Optimizer is a Shopify app built by BoosterApps.

  • HeadJS

    3.9K sitesOpen source

    HeadJS is a JavaScript library that optimizes web performance by managing the loading and execution of scripts and stylesheets to ensure faster page loads and efficient resource handling.

  • QUIC.cloud

    3.5K sitesFreemium · Pay as you go

    QUIC.cloud is a content delivery network (CDN) and optimisation service that uses the QUIC protocol, a next-generation internet transport protocol developed by Google, to deliver content faster and more securely over the internet.

  • Flying Pages

    2.7K sites

    Flying Pages is a performance optimisation plugin for WordPress websites designed to reduce page load times and improve the user experience.

  • Blitz

    2K sitesOne-time · $

    Blitz provides intelligent static page caching for creating lightning-fast sites with Craft CMS.

  • InstantClick

    2K sitesOpen source

    InstantClick is a JavaScript library that speeds up your website, making navigation faster.

  • Web Worker Offloading

    1.9K sites

    Performance plugin from the WordPress Performance Team, which offloads JavaScript execution to a Web Worker, improving performance by freeing up the main thread.

  • Queue-it

    1K sitesSaaSQuote

    Queue-it is a virtual waiting room platform designed to protect your website and mobile app from slowdowns or crashes during end-user peaks.

  • Sections.design Shopify App Optimization

    520 sitesOpen source

    Sections.design Shopify App Optimization is a Shopify section written in liquid for the purpose of improving performance of Shopify stores by optimizing how Shopify app loads.

  • Yottaa

    507 sites

    Yottaa is an ecommerce optimisation platform that helps with conversions, performance and security.

  • Speed Kit

    480 sitesSaaSQuote

    Speed Kit develops a performance add-on that uses caching algorithms to minimize loading times of ecommerce websites.

  • Gumlet

    328 sitesSaaS

    Gumlet is a solution to optimize images.

  • BerqWP

    232 sitesSaaS$ · Subscription

    BerqWP is a speed optimization plugin designed to help websites pass the core web vitals assessment and improve overall speed scores for better performance.

  • PerfectApps Swift

    225 sitesSaaS$ · Subscription

    Swift is a page speed solution for ecommerce store owners built by PerfectApps.

  • ImageEngine

    215 sitesSaaS$ · Subscription

    ImageEngine is an intelligent image content delivery network. ImageEngine will resize your image content tailored to the end users device.

  • Fasterize

    133 sites

    Fasterize is a website accelerator service.

Data from the open Wappalyzer database (enthec/webappanalyzer, GPL-3.0), updated every week. Site counts from the HTTP Archive (September 2026). Code tools (frameworks, build, ORMs…) come from a list kept by Faundr.