Turbolinks

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

Critters

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

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

Closure Library

A low-level JavaScript library designed for building complex and scalable web applications.

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

Cufon

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

YUI

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

NetObjects Fusion

A discontinued web design software for Windows and Mac OS.

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.

qTranslate-X

A discontinued WordPress plugin used for managing dynamic multilingual content on websites.

Prerender

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

Adobe Muse

A discontinued desktop application for designing web pages with intuitive, visual tools.

Google +1 Button

The sharing button code for the discontinued Google +1 service.

Alexa

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

RawGit

A public CDN for serving files from raw.githubusercontent.com with the correct content types.

iScroll

A high-performance JavaScript library for smooth scrolling.

Messenger Customer Chat

The website chat widget from Meta that was retired in May 2024.

Oracle Moat

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

Google Podcasts

A podcasting directory that was shut down in mid-2024 with the migration to YouTube Music.

Prefix-free

A legacy script that adds browser prefixes to CSS code when needed for old browsers.

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.

AT Internet

A fully GDPR-compliant web analytics solution before Piano's acquisition of the company.

Stacktable.js

jQuery plugin for stacking tables on small screens.

Adobe GoLive

A WYSIWYG HTML editor that was discontinued in 2008.