611 private links
Browser game.
Created as a fun way to discover interesting color combinations. Palettes are hand-selected from the Twitter bot @colorschemez. The feed randomly generates color combinations as well as their descriptions, with each color being matched with an adjective from a list of over 20,000 words.
Created by Adam Fuhrer.
Here's a library of thousands of book illustrations from old books, with searchable name, artist, source, date, which book it was in, etc.
Via Jason Kottke
- No ads
 - No need to create a Google account
 - Tools for managing subscriptions
 - Adds ability to listen only to audio
 - No need for YouTube app in order to listen to videos on mobile (or use Newpipe on Android)
 - No need to "ding" bell, just being subscribed is enough to receive all notifications
 - No age-gate
 - Dark mode (although YouTube has this now too)
 - Free software (AGPL v3 license)
 
A good Firefox add-on is Privacy Redirect. Apart from handling Youtube can also redirect other services, and it also automatically rotates each redirect from a list of Invidious instances so as to avoid overloading any single one.
See Invidious Instances for a list of publicly available instances.
- "Small acts of resistance are all we need. Together, we make change", Yarmo Mackenbach
 - https://reddit.com/r/SideProject/comments/8wvazc/invidous_alternative_frontend_to_youtube/
 - https://github.com/omarroth/invidious
 
Other Youtube front-end alternatives
- yt-dlp
 - NewPipe (Android)
 - PipePipe (Android), includes SponsorBlock
 - yt-local , via reddit thread
 
Replacing Youtube altogether
Another approach is to replace Youtube with an open-source, federated video host service.
That would be PeerTube (see this blog post by LazyBear).
- https://fedi.video - a good place to get started with PeerTube, by FediThing
 
Works great in VLC. Also works in mpv, and other video players.
Playlists:
Viewer beware.
Atlas of all the moons in our solar system
National Geographic
Also see:
A publicly available digital library of public domain Arabic language content.
I have already saved some titles to Calibre, but there are hundreds more available.
Data for the Sustainable Development Goals
World map, geography
Proper relative size of landmasses, countries
Images
- Creative Commons search engine that indexes over 300M CC-licensed images.
 - Flickr Commons. An attempt to catalog the world's public photo archives.
 - https://public.work - search engine of public domain images, via kottke.org and @holly_cummins@hachyderm.io.
 - Openverse - search engine for openly licensed images, audio and more
 - Unsplash. Fair warning, has started watermarking some photos.
 - Pexels. Free-to-use (without attribution) stock photos, images and videos.
 - Lexica - Stable Diffusion search engine. Search for images generated by the Stable Diffusion AI text-to-image model.
 
In related news
- https://www.flickr.org
 - https://pechaflickr.net
 - Google broke its image search. And hey CogDog, thanks for posting!
 - https://cogdogblog.com/2022/12/flickr-fdn-thanks/
 
Text
- https://crowdview.ai - search engine that exclusively searches discussion forums
 
Scientific
- https://www.scienceopen.com/search (blog post)
 - https://search.crossref.org
 - https://scholia.toolforge.org (very cool - relies on WikiData, hosted on WikiMedia Toolforge)
 
RadioGarden (requires WebGL-enabled browser, which is most any of them)
The project was featured on GlobalVoices
Via reddit.com