Sapper

An open-source Svelte framework for server-rendered and client-hydrated web applications that has been deprecated in favor of its successor, SvelteKit.

Hypernova

A legacy open source service from Airbnb that renders JavaScript views on the server to deliver HTML for better page load and search engine indexing.

A WYSIWYG HTML editor for Windows and Linux that was available until the mid-2000s.

Apache Cocoon

An open-source Java web application framework built around XML processing and retired in January 2025.

ASKfm

A question and answer social networking site that was shut down at the end of 2024.

Pocket Button

Allowed users to save content to Pocket, a social bookmarking service that shut down in 2025.

A URL shortener that specialized in iTunes links.

Amaya

A discontinued open source WYSIWYG web editor.

RainLoop

An open-source, web-based email client that is no longer being maintained.

Naver Post

A South Korean mobile-optimized user-generated content platform that let creators publish and share expert posts on various topics before it was discontinued in April 2025, after 12 years of service.

Borderfree

A cross-border e-commerce platform that enabled U.S.

Kohana

A deprecated open-source PHP framework that was last updated in 2016.

Tachyon

A deprecated script that improves the user experience of your website by prerendering pages before a user navigates to them.

Google Business Profile Websites

A Google service for single-page websites created through business profiles.

Scientific Linux

A discontinued Linux distribution based on RHEL.

Digital River

An online commerce solution provider offering comprehensive cloud commerce, marketing and payment solutions.

ShareASale

An affiliate marketing network that was acquired by Awin and shut down in 2025 with all clients transitioned to the Awin platform.

Yahoo! SiteBuilder

A WYSIWYG website building application that was discontinued in 2021.

DOM4

A fully tested and covered polyfill for DOM Level 4 entries.