PreMiD

Wikidata acts as central storage of structured data for Wikimedia projects. Structuring data into a machine-readable format makes it easier to view, search, edit, curate, use and re-use files.

Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition,...

XKCD is a webcomic of romance, sarcasm, math, and language.

Yahoo! Mail is an email service launched in 1997 through the American parent company Yahoo!. Yahoo Mail provides four different email plans: three for personal use and another for businesses. By December 2011, Yahoo! Mail had 281 million users, making it the third largest web-based email service in the world.

Yandex is a search engine that can be employed to find a variety of information such as websites, pictures, maps.

Yandex's free service instantly translates words, phrases, and web pages between English and 98 other languages!

Airbnb, Inc. is an American company that operates an online marketplace for lodging, primarily homestays for vacation rentals, and tourism activities.

Anki is a program which makes remembering things easy. Because it's a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn.

New user notifications. Purchase alerts. Scheduled jobs. Community bots. SQL queries. Internal tooling. Create whatever you want with JavaScript and APIs.

BookBrainz is a project to create an online database of information about every single book, magazine, journal and other publication ever written.

Search the Web. Privately. Truly useful results, AI-powered answers, & more. All from an independent index. No profiling, no bias, no Big Tech.

Bunpro is a japanese grammar learning application.