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Concepts

We like to explore ideas by building them.

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Screenshot of Town Tools

Changelog

2178towns · 74 countries ·1,545345678901tools

ResearchYorkUnited Kingdom

Corrected the length of York's city walls

New toolPort TownsendUnited States

Shipped a Coupeville ferry fare calculator

New toolJenaGermany

Die zentralen Parkhäuser in Jena im Vergleich

New toolFribourgSwitzerland

Nouvel outil : la déchetterie des Neigles, ouverte ou fermée maintenant

New toolKaikōuraNew Zealand

Shipped a tsunami self-evacuation guide

Site updatePlatform

Added Mexico's official SMN municipal forecast as a tool kind

New toolNaoshimaJapan

Shipped 'Are the Ferries Running?'

New toolUshuaiaArgentina

Nueva herramienta: ¿Hay alerta meteorológica?

New townLondonUnited Kingdom

London is live

New toolTam ĐảoVietnam

Thêm bảng tình hình đường lên Tam Đảo (QL2B)

New toolKpaliméTogo

Le vent va-t-il forcir ?

New townBatiEthiopia

ባቲ ቀጥታ ሆነች — ለሰኞ ገበያው የመጀመሪያ መሣሪያዎች

ResearchYorkUnited Kingdom

Corrected the length of York's city walls

New toolPort TownsendUnited States

Shipped a Coupeville ferry fare calculator

New toolJenaGermany

Die zentralen Parkhäuser in Jena im Vergleich

New toolFribourgSwitzerland

Nouvel outil : la déchetterie des Neigles, ouverte ou fermée maintenant

New toolKaikōuraNew Zealand

Shipped a tsunami self-evacuation guide

Site updatePlatform

Added Mexico's official SMN municipal forecast as a tool kind

New toolNaoshimaJapan

Shipped 'Are the Ferries Running?'

New toolUshuaiaArgentina

Nueva herramienta: ¿Hay alerta meteorológica?

New townLondonUnited Kingdom

London is live

New toolTam ĐảoVietnam

Thêm bảng tình hình đường lên Tam Đảo (QL2B)

New toolKpaliméTogo

Le vent va-t-il forcir ?

New townBatiEthiopia

ባቲ ቀጥታ ሆነች — ለሰኞ ገበያው የመጀመሪያ መሣሪያዎች

ResearchYorkUnited Kingdom

Corrected the length of York's city walls

New toolPort TownsendUnited States

Shipped a Coupeville ferry fare calculator

New toolJenaGermany

Die zentralen Parkhäuser in Jena im Vergleich

New toolFribourgSwitzerland

Nouvel outil : la déchetterie des Neigles, ouverte ou fermée maintenant

New toolKaikōuraNew Zealand

Shipped a tsunami self-evacuation guide

Site updatePlatform

Added Mexico's official SMN municipal forecast as a tool kind

New toolNaoshimaJapan

Shipped 'Are the Ferries Running?'

New toolUshuaiaArgentina

Nueva herramienta: ¿Hay alerta meteorológica?

New townLondonUnited Kingdom

London is live

New toolTam ĐảoVietnam

Thêm bảng tình hình đường lên Tam Đảo (QL2B)

New toolKpaliméTogo

Le vent va-t-il forcir ?

New townBatiEthiopia

ባቲ ቀጥታ ሆነች — ለሰኞ ገበያው የመጀመሪያ መሣሪያዎች

Town Tools

Local web tools built by a team of agents. Residents request a town and suggest tools; the agents research the place, build what would help, and maintain it.

  • agent managed
  • ·place based
  • ·agent research
  • ·daily updates
towntools.org↗June 2026
Screenshot of Scramble

paper

Same Page, New Design

Get startedDocs
Clash Display · Satoshisoftdensityspace

Scramble

A design-language toy. One product page — press space and the whole design re-rolls fonts, palette, type scale, radii, and shadows into a coherent new system, with locks to keep what you like.

  • design
scramble.adder.dev↗July 2026
Screenshot of One Changelog
Your edition19 items this week
3–9 Aug
OpenAI2 updates
5 AugFast mode now supports requests over 272K tokens
4 AugFilter usage and costs by API key in dashboards and APIs
Anthropic3 updates
6 AugClaude Opus 5 released with 1M context and extended output
4 AugMid-conversation tool changes now in beta
3 AugInference hooks intercept and approve Claude requests
OpenAI2 updates
5 AugFast mode now supports requests over 272K tokens
4 AugFilter usage and costs by API key in dashboards and APIs
Anthropic3 updates
6 AugClaude Opus 5 released with 1M context and extended output
4 AugMid-conversation tool changes now in beta
3 AugInference hooks intercept and approve Claude requests

One Changelog

One changelog for all your AI dev tools. Pick your stack and get one weekly digest covering only the tools you use, at your depth. Concept stage.

  • AI tooling
onechangelog.com↗July 2026
Product maturityPrototypeUsableComplete

Showing 12 of 27 concepts matching all concepts

2026

New

QR Code Generator

A free QR code generator. Turn any URL or text into a QR code, tweak size, colours, and error correction, and download as PNG or SVG.

May 2026
Screenshot of Animations

Animations

A searchable library of copy-paste animations. Every card plays its animation live, every snippet is self-contained, and agents add new ones daily over MCP and a JSON API.

  • agent managed
  • ·daily updates
  • ·design
animations.adder.dev↗July 2026
Screenshot of Bin Day Alerts
Recycling + food waste tonight

Bin Day Alerts

A UK bin-collection reminder. Enter a postcode to see which bins go out this week and get an alert before every collection.

  • place based
bindayalerts.co.uk↗July 2026
Screenshot of Random MCP

Random MCP · get_lens()▮

What would a beekeeper notice?Design it as a 1950s applianceMake the constraint the heroWhat would a beekeeper notice?

Random MCP

Creative lenses for AI agents. Gives agents access to 24 generators that produce unexpected perspectives so they stop defaulting to the same handful of ideas.

  • AI tooling
randommcp.com↗February 2026
Screenshot of Peer Rejected
Rejected

Peer Rejected

A parody journal of decisive peer review. Publishes serious research into deeply unserious questions, with a new rejection every day.

  • daily updates
  • ·humour
peerrejected.com↗July 2026
Screenshot of Mr. Buttons
Remind me to call the dentist at 3
✓ Reminder set for 3:00 pm

Mr. Buttons

A WhatsApp reminder assistant. Send it a message to set reminders, create calendar links, and ask what's coming up.

  • assistant
mrbuttons.app↗January 2026
Screenshot of Marston Cycle Path Flood Watch

Water Level — Last 7 Days

0.00 m1.88 m2.01 m2.13 m2.00 m1.88 m
DryBootsWelliesImpass.
DryDryBootsBootsWelliesWelliesSwimmingSwimming

Marston Cycle Path Flood Watch

A flood tracker for Oxford's Marston cycle path. Shows whether to walk, ride, or wear wellies, with water levels and path photos updated daily.

  • place based
  • ·weather
marstoncyclepath.co.uk↗March 2026
Screenshot of Flood Path

Flood Path

A flood checker for Britain's paths. See whether cycle paths, towpaths, and footpaths are passable before you set off, and save the ones you use most.

  • place based
  • ·agent managed
  • ·weather
floodpath.co.uk↗June 2026
Screenshot of Agent Focus Group
acme.com
Acme
Invoices that write themselves
Talk through the job. We send the invoice.
Start free trial
No credit card required
Panel of 4Willingness to Try
MKMaya K.Ops lead, 348/10
DRDan R.Freelance dev, 293/10
PNPriya N.Head of growth, 419/10
TWTom W.Agency owner, 376/10
Average6.5

Agent Focus Group

AI-powered focus groups. Test landing pages, pitches, social posts, and ads by a group of LLMs imitating your users.

  • agent research
agentfocusgroup.com↗February 2026
Screenshot of Bakery Forecast
Butter croissantsTomorrow · Sunday
A typical Sunday38
Warmer than usual (17°)+4
Rain likely from 2pm−6
Busier week lately (avg 44/day)+5
Bake tomorrow38423641croissants

Bakery Forecast

A demand forecaster for bakeries. Blends your sales, the weather, and the day of the week to say exactly how much of each item to bake tomorrow.

  • weather
bakeryforecast.com↗May 2026
Screenshot of OxFomo

OxFomo

An events calendar for Oxford. Parses various club e-mail newsletters and scrapes various Oxford event pages to make one unified and searchable list.

  • place based
  • ·agent managed
oxfomo.com↗June 2026

2025

Screenshot of Generative Arcade

Generative Arcade

A gallery that showcases agent-generated games with a new game produced daily.

  • daily updates
  • ·games
generativearcade.com↗March 2025