This selection moves from classroom resources and collaborative writing to coding-session tools and small browser games. Each website comes from a recent Show HN submission, with the original discussion linked for further context.
Collection window: October 13, 2026, 02:05 UTC through October 14, 2026, 02:05 UTC (October 12 at 7:05 p.m. through October 13 at 7:05 p.m. Pacific). The official Hacker News API places all ten submissions within these 24 hours. Recent repeat domains were excluded. Submission dates do not establish when a website first launched. We inspected public pages and maker descriptions without completing full product trials.
1. AI Hub: Find an activity for teaching AI literacy
AI Hub organizes educational resources from nonprofit providers in one searchable directory. Filters include topics, skill levels and teaching features, with activities showing useful details such as grade level or duration. Teachers looking for an AI literacy lesson can compare options without treating a single provider’s collection as the entire curriculum.
Before you try it: The hub points to separate providers. Check each activity’s classroom fit, access requirements and terms before assigning it; the directory itself is not a complete course.
Visit website · Show HN discussion
2. 3D Studio on Puter: Explore a 3D scene in the browser
This Puter-hosted editor presents a 3D workspace with a scene hierarchy, transform controls and a timeline. The visible interface includes a camera, cube and light, giving curious creators a starting point for exploring scene organization. It may interest people who want to inspect a browser-based 3D environment before choosing a larger desktop workflow.
Before you try it: We inspected the interface, not a completed render. Do not assume every displayed workspace or export option has full desktop-editor compatibility.
Visit website · Show HN discussion
3. Wonderhop: Guess what other people might say
Wonderhop mixes four rounds of questions about common answers, rare answers and events in time. Players type responses rather than choosing from a fixed menu, and the site offers several languages and a leaderboard. It is a browser diversion for people who enjoy comparing their intuition with a changing pool of answers.
Before you try it: The maker says answer percentages begin as estimates and adjust with player data. They are not a representative survey, and AI judging may handle an unexpected answer imperfectly.
Visit website · Show HN discussion
4. Sugabots: Put people and agents in the same conversation
Sugabots is a self-hosted product built around shared chat spaces called pods. People can see agent exchanges, results and approval requests together, with separate prompts, models and tools for each agent. Technical teams can investigate it when they want a common place to follow work instead of separate private bot conversations.
Before you try it: Running it requires hosting and model access. Review tool permissions and provider connections: a self-hosted interface does not mean a cloud model receives no data.
Visit website · Show HN discussion
5. UpDown: Share a small Markdown document
UpDown is a collaborative Markdown editor that starts from a shareable document link. Its public introduction shows a document outline, source and comment views, and GitHub-flavored Markdown formatting. It is aimed at people who want to write and discuss a document without first setting up a larger workspace.
Before you try it: Check the document’s sharing and edit settings before adding private information. We read the public introduction without modifying a shared document or testing simultaneous editing.
Visit website · Show HN discussion
6. Muster: Notice when a coding session needs you
Muster is a macOS menu-bar application for following sessions in Claude Code, Codex and Cursor. It can direct attention to an approval request and return to the relevant window. Developers supervising several sessions can examine whether that smaller status view reduces the need to repeatedly switch between applications.
Before you try it: It requires macOS 14 or later. Quick responses are supported for Claude Code and Codex, while Cursor support is navigation-focused; read the full action before approving it.
Visit website · Show HN discussion
7. Fold to the Moon: Make exponential growth visible
Fold to the Moon starts with an idealized sheet thickness and doubles it at each fold. The interactive page asks for a guess, then lets readers step through the growth and compare it with familiar distances. Teachers and curious readers can use the simple browser demonstration to discuss why repeated doubling quickly outruns intuition.
Before you try it: It is a mathematical model of thickness, not a claim that a physical sheet can be folded that many times. Material, force and available area are outside the model.
Visit website · Show HN discussion
8. Parsimony: Compare the size of successful code changes
Parsimony visualizes how much code benchmark solutions add or remove, using syntax units rather than line counts. Its charts offer another way to compare patches alongside whether a task was solved. Developers reading coding-agent results can explore the trade-off between successful work and the amount of code introduced.
Before you try it: Smaller patches are not automatically better. The site does not rerun the benchmark tests, and its small exploratory runs are kept out of the rankings.
Visit website · Show HN discussion
9. Blueline: Try an arcade hockey starting screen
Blueline presents a browser hockey game with a quick-play setup for a five-on-five match against the computer. The visible menu includes club selection, period length, rules and separate local or online modes. Arcade-sports fans can inspect the early version and its controls from the website.
Before you try it: The page identifies this as version 0.1 using WebGPU. We checked the menu, not a full match or online session, so device support and multiplayer behavior remain to be tested.
Visit website · Show HN discussion
10. Guitoro: Explore chords without installing an app
Guitoro presents a browser guitar with chord controls, keyboard or swipe strumming, and several instrument sounds. Its site also describes fingering diagrams and slower song playback. Beginners curious about chord shapes can explore the interface before bringing the same questions to a physical instrument.
Before you try it: We did not test the audio output. Browser sound settings affect the experience, and a virtual instrument cannot teach the finger pressure or movement of a real guitar.
Visit website · Show HN discussion
Choose a useful starting point
Start with a site that matches a current question or a few minutes of curiosity. The original Show HN thread is useful for understanding what the maker intended, while a short visit can reveal whether the interface fits your needs.
Today’s domain list
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aihub.remakelearning.org 3d.puter.com wonderhop.io sugabots.ai updown.laravel.cloud agentmuster.app twentyfun.com parsimony.lasu.dev playblueline.pages.dev guitoro.com
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