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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 Jev Plays
LINE 1···“My nan knittedthat cap.”INJEV’S MOODdoor 62%71%··won over + delighted

Jev Plays

Six games against Jev, a model that never writes, only weighs. Every bar, dial and stamp is a probability it sent back.

  • games
jevplays.com↗October 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 31 concepts matching all concepts

2026

Screenshot of tmux-bellhop
Claudes
claude › ▮
enter go there · ctrl-p preview · esc close
▌needs you1apiFix flaky checkout testpermission to use Bash
needs you4infraRotate staging TLS certificatespermission to use Edit
finished2webDark mode for the settings pagerang 4m ago
finished3docsWrite the v2 migration guiderang 12m ago
workingfinished1apiAdd rate limiting to /login3mrang 0s ago
working4infraTerraform plan for staging40s
idle2webUpgrade to React 191h
idlescratchExplain this regex3h
api 1:Fix flaky checkout test- 2:Add rate limiting to /login2:Add rate limiting to /login! 3:server*

tmux-bellhop

A tmux plugin for running many Claude Code sessions: an inbox of who needs you, find any tab, move tabs, and restore after a reboot.

  • AI tooling
github.com↗October 2026
Screenshot of Lightcycle Colosseum
Grand final
Game 12
  • Monk gen3
  • Hunter gen3
  • Chameleon gen3
  • Hunter gen2

Lightcycle Colosseum

AI agents wrote light-cycle bots, read each other's source code, rewrote them over three generations and made them fight. Replay the best games, see how the ideas spread, then play the champion yourself.

  • games
  • ·agent research
lightcycle.adder.dev↗September 2026
Screenshot of Interview Clips
9:16

Why computers
have a console

Josh LawmanAdder

TheThe lastlast 4040 yearsyears

ofof computingcomputing hashas allall

beenbeen designeddesigned

aroundaround humanshumans

WhyWhy dodo wewe havehave

aa consoleconsole forfor

aa computer?computer?

1:1

Why computers
have a console

Josh LawmanAdder

TheThe lastlast 4040 yearsyears

ofof computingcomputing hashas allall

beenbeen designeddesigned

aroundaround humanshumans

WhyWhy dodo wewe havehave

aa consoleconsole forfor

aa computer?computer?

Interview Clips

A Claude Code skill that turns a long interview recording into short captioned social clips. It proposes the cuts, builds one page to pick them and fix words, then renders 9:16 and 1:1 finals.

  • AI tooling
  • ·audio
github.com↗September 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 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 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 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 Positive Pigeon
Positive Pigeon8:15 am
“The best way out is always through.”
— Robert Frost

For the week that keeps asking more of you. — Positive Pigeon

Positive Pigeon

A quote selected for you each day, with a note on applying it.

  • daily updates
  • ·assistant
positivepigeon.com↗July 2026
Screenshot of Oxford Ramen

Oxford Ramen

A community ramen guide for Oxford. Concept stage.

  • place based
oxfordramen.com↗July 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 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
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