Website related
sadgrl.online
Many resources for website creation
w3schools.com
Learn html/css/js stuff
32-Bit Cafe - Ideas for Your Personal Website
Title says it
Ayano's comment widget
Add comments to your site
Nekobox
(For nekoweb) Edit your sitebox and postbox with a live preview
Graphics
Bonnibel's Graphic Collection
Coco's Pixel Safari
Betty's Graphics
Useful
ezgif.com
A bunch of very useful gif-related tools
dithermark.com
Dither images. Very easy and has lots of options
cobalt.tools
Video downloader for many websites
Fun
Lolitahistory.com (gallery)
Gallery of many lolita (and other japanese fashion styles) magazines, including gothic lolita bible, FRUITS, catalogues from brands such as Angelic pretty and Baby the stars shine bright, and more stuff!
lolibrary.org
Database for lolita clothes
The Visual Novel Database (NSFW)
database for visual novels
The deep sea (neal.fun)
An interactive page that lets you scroll down the ocean
jspaint.app
Classic MS Paint on browser