borismus.github.io/spectrogram is a site that creates spectrograms on any topic.

lo-th.github.io/3d.city/index.html - on this site you can create a 3D model of any city.

editor.polarr.co - this site allows you to edit photos without downloading any apps.

@EasyPicBot - with this bot, you can create an avatar like the photo.

@SaveTargetbot - the bot will help you download any media file from TikTok, Instagram, and Pinterest.

lumosity.com is a site that generates an exercise program for memory development.

chatfish.ru - voice chat roulette with strangers.

neal.fun/printing-money is a page showing the money turnover of companies per hour.

annyas.com/screenshots/ - this site collects opening credits from movies.

selfie2anime.com - turns the person in the photo into an anime character.

neal.fun/size-of-space is a site showing visually the size of the universe.

usersearch.org is a site that searches for a person on all social networks.

rave.dj/mix is a site where you can create mashups by combining several songs together.

virtualvacation.us/driver - here you can drive to different cities of the world.

galactic.ink/sketchpad is an advanced sketchpad tool.

caniflyakite.com - on this site you can enter your zip code and find out if you can fly a kite in that area right now.

prankdial.com is a site for prank phone calls with a pre-recorded script of the conversation.

apod.nasa.gov/apod/astropix.html is a site with photos of space for that day.

brief.ly - here you can create a business card

asmrion.com is a site that creates atmosphere through sounds.

livestream.com/uq/events/5369913 - the world's longest running continuous laboratory experiment is broadcast here.