AddThis

A social bookmarking service that discontinued its services on May 31, 2023.

Google Sign-In

A deprecated JavaScript library that has been superseded by Google Identity services for Web.

Google Webmaster Tools

The old Google Webmaster Tools, detected by the meta name "verify-v1", which have been deprecated in favor of Google Search Console.

Picturefill

A responsive image polyfill for <picture>, srcset, sizes, and more.

Alexa

A web traffic analysis service from Amazon that was discontinued in 2022.

Turbolinks

A JavaScript library that allows web apps to behave like a single page application.

Facebook Like Box

A plugin that allowed admins to promote their Facebook Pages and embed a simple feed of content from a Page into other sites.

YUI

A legacy, open-source JavaScript and CSS library for building interactive web applications with a focus on modular architecture and cross-browser consistency.

Cufon

A discontinued JavaScript library that performs text replacement on web pages, using the canvas element and VML to render fancy fonts.

MSHTML

An editor based on the MSHTML component of the discontinued Internet Explorer browser.

A lightbox module for Bootstrap that supports images, YouTube videos and galleries - built around Bootstrap's Modal plugin.

Skype

A communications platform for voice and video calls and sending instant messages that was retired on May 5, 2025 in favor of Microsoft Teams.

Qoo10

A Southeast Asian online marketplace operating in Singapore, Indonesia, Malaysia, China, and Hong Kong.

A URL shortener that specialized in iTunes links.

Material Design Lite

A legacy user interface framework that implements Material Design components using plain CSS, JavaScript, and HTML without external dependencies.

Salesforce Chat

A live chat solution from Salesforce that is currently in maintenance-only mode and is scheduled to be retired in February 2026.

Critters

A deprecated Webpack plugin that inlines your app's critical CSS and lazily loads the rest.

Microsoft FrontPage

A WYSIWYG HTML editor and website administration tool that was part of Microsoft Office until it was discontinued in 2003.

StackPath

A content delivery network that shut down in March 2024.

Oribi

An all-in-one marketing analytics solution acquired by LinkedIn.

Spry

A deprecated JavaScript framework by Adobe that enables the rapid development of Ajax-powered web pages.

A lightbox library for photos and videos, last released in 2014.

Oracle Moat

A measurement and marketing analytics suite designed to measure media performance across digital and TV advertising campaigns.

Prerender

A deprecated browser hint that instructed web browsers to preload and render a web page in the background before navigation occurred.

ES6 Shim

Provides compatibility shims so that legacy JavaScript engines behave as closely as possible to ECMAScript 6.