30 websites to save for later, from @setupsai
@setupsai shares websites worth saving for later in short videos on Instagram and TikTok: the tools, references and finds you bookmark now and are glad of next month.
Saved posts get buried, so here they are as one list. Each one is linked, described and checked by a person.
Updated · 30 sites · hand-checked
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1. explainshell
Paste a shell command and get every flag and argument annotated with the matching line from the man page.
- Developer
- Free
- explainshell.com
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2. Stella Nova
A space colony game whose lab doubles as a playground of live physics simulations, from orbits to black holes and wormholes.
- Science & Space
- Free
- davesgames.io
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3. Mult.dev
Animate a travel route on a map, plane or car following the line, and export it as a video for your stories.
- Maps & Earth
- Freemium
- mult.dev
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4. Hero Forge
Build your tabletop character as a 3D miniature, from pose and armour to the shape of the nose. Designing is free; ordering a print isn't.
- Games & Play
- Freemium
- heroforge.com
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5. Tooooools
Lo-fi effects for images and video: dithering, halftones, gradient maps and patterns, with no sign-up and no watermark.
- Design & Type
- Free
- tooooools.app
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6. Huemint
Generates palettes previewed on a website, a logo or a gradient, so you judge colours where they will be used. Lock the ones you like and reroll the rest.
- Design & Type
- Free
- huemint.com
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7. 3Blue1Brown
Mathematics with a visual soul: linear algebra, calculus and analysis animated into real intuition.
- Learn
- Free
- 3blue1brown.com
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8. Instructables
Step-by-step photo guides for making almost anything, from furniture to robots to cakes, written by the people who made them.
- Learn
- Free
- instructables.com
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9. Keepa
Price history charts for nearly every Amazon product, so you can tell a real deal from a fake discount and set drop alerts.
- Everyday Tools
- Freemium
- keepa.com
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10. Cheatography
Thousands of community-made cheat sheets for programming languages, tools and shortcuts, all printable.
- Developer
- Free
- cheatography.com
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11. PerlerBeads
Turn any picture into a fuse-bead pattern with a bead count per colour, mapped to Perler, Hama and Artkal palettes.
- Everyday Tools
- Free
- perlerbeads.net
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12. TopoExport
Draw a box on the map and download that terrain as a 3D model or contour lines, ready for 3D printing or CAD.
- Maps & Earth
- Freemium
- app.topoexport.com
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13. Bomomo
A row of strange brushes that swarm, orbit and bounce after your cursor, leaving patterns you could never draw yourself.
- Fun & Weird
- Free
- bomomo.com
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14. Sakugabooru
An archive of standout cuts of hand-drawn animation, tagged by animator, studio and show. Where animation fans go to study a single scene.
- Read & Archive
- Free
- sakugabooru.com
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15. Board Game Arena
Over a thousand real board games, from Carcassonne to obscure Euro titles, playable in the browser with rules enforced for you.
- Games & Play
- Freemium
- en.boardgamearena.com
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17. playgrnd
32 free, single-purpose generative design tools. No accounts, no uploads, everything runs in your browser.
- Design & Type
- Free
- playgrnd.tools
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18. Awkward Family Photos
Readers send in their most cringeworthy family portraits, holiday snaps and matching outfits. Years of archived glory.
- Fun & Weird
- Free
- awkwardfamilyphotos.com
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19. Quick, Draw!
You have twenty seconds to draw a prompt while a neural network guesses out loud. Then see how millions of others drew the same thing.
- Games & Play
- Free
- quickdraw.withgoogle.com
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20. Little Alchemy 2
Start with air, earth, fire and water and combine them into hundreds of things, one discovery at a time. A calm puzzle you keep coming back to.
- Games & Play
- Free
- littlealchemy2.com
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21. Piskel
A pixel-art and sprite-animation editor that runs in the tab, with onion skinning and GIF export. Everything you need to make a walk cycle and nothing you do not.
- Design & Type
- Open source
- piskelapp.com
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22. Logoipsum
Lorem ipsum for logos: a stack of believable fake brand marks to drop into mockups until the client finally sends theirs.
- Design & Type
- Free
- logoipsum.com
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23. Nicky Case
Playable posts about game theory, mental health and emergence that treat you as a participant.
- Learn
- Free
- ncase.me
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24. Atom Animation
Spin 3D models of atoms and molecules and watch electrons, orbitals and bonds animate as you explore the periodic table.
- Science & Space
- Free
- atomanimation.com
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25. Anatomy Atelier
Explore the human body in 3D, organ by organ, with hotspots and short lessons on what each part does.
- Science & Space
- Free
- anatomyatelier.org
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26. Khan Academy
Free, structured courses from arithmetic to art history, with practice that adapts to you.
- Learn
- Free
- khanacademy.org
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27. Desmos Graphing Calculator
A graphing calculator so fast and pleasant that it turns algebra into doodling.
- Learn
- Free
- desmos.com
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28. Vocal Remover
Drop in a song and get the vocals and the instrumental as separate tracks. Also has pitch, tempo and key tools for karaoke and practice.
- Music & Audio
- Freemium
- vocalremover.org
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29. Red Blob Games
Amit Patel’s interactive explainers on pathfinding, hex grids, noise and map generation. The A* article alone has taught a generation of game programmers.
- Learn
- Free
- redblobgames.com
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30. Excalidraw
A hand-drawn-feeling virtual whiteboard. Diagrams that look deliberately rough, shareable in one link.
- Design & Type
- Open source
- excalidraw.com
Want more than 30?
This list is one slice of a directory of 481 websites. Search, filter by category or tag, or shuffle the lot.
Explore the full directoryQuestions
Where is the list of websites from @setupsai?
This page. It gathers the websites @setupsai tells you to save for later, so you can find them again without scrolling back through your saved posts.
Are these websites free?
Most are free or have a free tier. Every entry shows its price.
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