worldwidetelescope.org
WorldwideTelescope is an educational resource for documentaries, courses, books, reference material, or self-learning.
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wtr-lab.com
WTR-Lab is a free, community-driven novel reading site offering web novels and light novels translated into English using AI models. Users can request novels, vote on requests, and sign up to save reading progress.
wumbo.net
Wumbo is a math reference site for students, teachers, and enthusiasts. It organizes core concepts, worked examples, formulas, functions, a glossary, notation, operators, symbols, and videos, including a video on quaternions implemented in Python. It offers a contributing membership that funds future videos and resources.
tweedewereldoorlog.nl
WW2 in 100 Objects is a virtual online exhibition of Second World War-related items. The physical exhibition was on display at Kunsthal Rotterdam until 5 May 2014. The virtual version allows remote access to the exhibition, with full-screen mode recommended for the best viewing experience.
ww2links.ca
WW2 Links is an educational resource for documentaries, courses, books, reference material, or self-learning.
x6ud.github.io
x6ud is an educational resource for documentaries, courses, books, reference material, or self-learning.
xflr5.tech
XFLR5 is an educational resource for documentaries, courses, books, reference material, or self-learning.
xkcd.com
xkcd is a webcomic described by its site as being about romance, sarcasm, math, and language. The site offers a comic archive, a random comic link, permanent links to individual comics, RSS and Atom feeds, and email alternatives. The comics are licensed under a Creative Commons Attribution-NonCommercial 2.5 License, which permits copying and sharing but not selling.
xoxocomic.com
XOXO Comics helps find, read, or organize manga, comics, webtoons, and visual stories.
yacreader.com
YACReader is a comic reader and comic manager that supports cbr, cbz, zip and rar comic files. It is available for Windows, Linux and Mac OS X, with mobile apps for iPhone, iPad and Android and a server and web UI for NAS or home server use. YACReaderLibrary organizes, searches and manages collections, keeping folders as they are on disk and adding metadata, search, reading lists and progress.
github.com
Yamtrack is a code project with source, releases, documentation, or setup notes.
oldrocketforum.com
Ye Olde Rocket Forum is an educational resource for documentaries, courses, books, reference material, or self-learning.
yokai.com
Yokai.com is an illustrated database and encyclopedia of Japanese folklore featuring ghosts, monsters, and legendary figures. Entries are based on Japanese sources including books, paintings, scrolls, prints, and oral tradition, with text and illustrations by Matthew Meyer. The site is presented ad-free, pop-up free, and paywall free.
yomu-reader.com
Yomu is an ebook reader for iPhone, iPad and Mac. Its layout adjusts text properties and margins to preferred styles and devices, and it offers font and reader mode choices, note taking and highlighting. It supports DRM-free EPub, Mobi, Kindle, PDF and comic files, and keeps books and annotations synced through Apple's iCloud.
yottachess.com
YottaChess is an educational resource for documentaries, courses, books, reference material, or self-learning.
yourlogicalfallacyis.com
YouLogicalFallacyIs is an educational resource for documentaries, courses, books, reference material, or self-learning.
yourbias.is
YourBias.is is an educational resource for documentaries, courses, books, reference material, or self-learning.
ysk-comics.com
YSK Comics helps find, read, or organize manga, comics, webtoons, and visual stories.
github.com
Z-Library Plugin is a code project with source, releases, documentation, or setup notes.
ztonnetz.com
Z-Tonnetz is a free browser-based beta visualization of a neo-Riemannian Tonnetz in 3D. It plays any MIDI file or a user's keyboard and shows chords, voice leading and key relationships in real time. The page notes that these are highly experimental features and some may not work as intended.
zaneh.itch.io
A downloadable MIDI utility for learning basic piano scales and chords at the user's own pace with a MIDI or QWERTY keyboard. It offers Quiz and Practice modes, extra options such as Ping Pong, Hard and Shuffle modes, built-in piano sounds and multiple languages. The cross-platform app is open-sourced under the MIT License.
zipcomic.com
ZipComic helps find, read, or organize manga, comics, webtoons, and visual stories.
zotero.org
Zotero is a free, open-source research management tool developed by an independent nonprofit organization. It enables users to collect, organize, annotate, cite, and share research materials. The tool supports over 9,000 citation styles and integrates with common word processors. It is available for Mac, Windows, Linux, iOS, and Android, and users can share libraries with others at no cost for collaboration.
zperiod.app
Zperiod is an interactive periodic table covering 118 elements, with 3D atom models, ions, chemistry tools, and worksheet practice. It is presented as a desktop-only experience with an iPhone variant directing users to open it on a computer. Units include temperature, density, and energy.