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Products that do what How many people live within an hour walk of you? does
I've been building a bunch of US geography tools/games/visualizations and thought folks on HN might like this one. There are also drive-time and bike-time tools available on the same page. For folks interested, all of the data comes from OpenStreetMap and the US Census at the moment - OSM for routing and points interest and the US Census for population data. Anonymous users can use it 5x/day. I put up a waitlist page to gauge interest in a paid version but there's no way for the public to make an account - feel free to bypass the limits in an incognito tab. The site is US-only…
- 1OF
Hi HN! Today I'm launching OpenTimes, a free database of roughly 150 billion pre-computed, point-to-point travel times between United States Census geographies. In addition to letting you visualize travel isochrones on the homepage, OpenTimes also lets you download massive amounts of travel time data for free and with no limits. The primary goal here is to enable research and fill a gap I noticed in the open-source spatial ecosystem. Researchers (social scientists, economists, etc.) use large travel time matrices to quantify things like access to healthcare, but they often end up paying…
2025 · opentimes.org
- 2AW
For the past few months, I've been working on a website that answers two different questions: - Where in my city have the best travel times to all the things and people I care about? - Given a listing, how far is it from all the things and people I care about? Personally this was fueled by my own frustrations when I was apartment hunting in NYC. I was frustrating to have to juggle so many Google Maps tabs when I was evaluating a listing, and it was also annoying to not have full confidence that I was even searching in the right places. I wanted to be close to work, a Trader Joe's, and a…
2025 · theretowhere.com
- 3IB
This was something I built while trying to look for housing in Toronto that was decently transit-accessible to my office while still cheap. The backend is written in Rust. It parses public GTFS data from transit agencies and performs a simple heuristics-based BFS on the bus lines to calculate how long to reach all points in a city. The frontend uses React and Mapbox GL to render each individual road segment based on how long it takes to reach. This project was a great excuse to learn Rust, deployments, and mapping. The source code is here if you are interested:…
2023 · map.henryn.xyz
- 4MA
2016 · maphub.net
- 5LW
Hi HN, I made a web game to practice country locations a while ago and HN liked it, so I thought I'd post my updated version as well. As for how the game works and feels, I'd really recommend you checking it out for yourself, it's free, no signup, no ads. The tech stack is Vue + ts + Tailwind/Daisy for the looks. The learning algorithm is a slight modification of the ts version of FSRS. If you have anything to add, it's open source as well (https://github.com/koljapluemer/learn-worldmap), although not well documented yet. In the end it's just a little sideproject,…
2025 · map.koljapluemer.com
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- 7SC
2015 · statisticalatlas.com
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How far must a 5° slice go in each direction before it hits N people?
Jul 2026 · imjasonh.github.io
- 9TT
http://www.timeclover.com We made a time tracking tool to track hobbies and goals. No billable hours or other enterprise nonsense, just simplicity and what we feel are great graphs and visualizations of how you spend your time. I'm a big fan of seinfeld's method and this is supposed to take it a step further. Instead of planning activities, guilt yourself into not ruining your beautiful history. We’re still expanding the idea, and would love some feedback. Unfortunately everything is somewhat empty until you have tracked for a couple of days, so here is my public profile view to give you an…
2011
- 10TS
I came up with this idea when I was looking to move to London with a friend. I quickly learned how frustrating it is to trial-and-error housing options for days on end, just to be denied after days of searching due to some grotesque counteroffer. To add to this, finding properties that meet the budgets, commuting preferences and work locations of everyone in a group is a Sisyphean task - it often ends in failure, with somebody exceeding their original budget or somebody dropping out. To solve this I built a tool (https://closemove.com/) that: - lets you enter between 1-6…
2025 · closemove.com
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This project started with me wanting to find a nice place to live with my partner. I'm a data scientist by day so I thought I'd approach it systematically. When I showed it to my friends, many said they wanted to try it too, so I made it into an app and put it online. (-> MIT licensed) The app is German, but it's translator friendly :) Instead of a single "best place" ranking, it scores ~0.5 km2 hexes across Germany based on user preferences on a dozen or so liveability layers like rent, commute time, recreational potential, noise level, and many more. User preferences are reflected on the…
Jul 2026 · wohnortatlas.de
- 13IM
Hi HN, I built a little tool to help me get better at remembering country locations on the map: https://learn-worldmap.netlify.app/ It's made from plain HTML/CSS/JS, and not intended to make any money or anything. Just thought that maybe someone else may enjoy it. Also of course happy about any feedback! Cheerz.
2023 · learn-worldmap.netlify.app
- 14IM
Hello HN, I made the web app that helps plan your routes/road trips. It has so many options that I don’t know how to explain in simple words :), so I’ll try like this. What is cool about it is that your routes are shareable and hackable. The routes come in the format ie. https://camptarget.com/London,Uk/Vienna,AT/Istanbul,TR/5h:6d, meaning we travel from London via Vienna to Istanbul, driving 5 hours daily while our total time budget would be 6 days. At given breakpoints (after 5 hours) we can explore the nearby locality in radius of some 30-40 miles, for…
2020
- 15IC
http://impromptudo.com is a small project I've been working on. Just a webapp for now but I think it qualifies as an MVP. Also has a mobile version at the same url or http://m.impromptudo.com. Right now it pulls in data from meetup.com for upcoming meetups in several populous cities so it's not just an empty map. You can also click on the map to put up your own post. Trying to stay away from making it all social networky, there are plenty of those already.<p>Finally, I'm not a designer, as you can see.
2010
- 16OS
Hey there, I'm an OpenStreetMap enthusiast and I was curious what kind of impact the app I am using has (I use StreetComplete[1], an easy-to-use Android app to add missing information). I couldn't find data for all my questions and some were not up to date, but I found a few starting points on how to do it myself[2][3]. Soon I realized that many more interesting questions about OpenStreetMap in general could be answered with the data and I created a website (https://piebro.github.io/openstreetmap-statistics/) to show them. Since I want the data to be up to date, I added a…
2022 · github.com
- 17IM
Hey HN. I made a micro site one recent evening to see upcoming (and recent past) timezone transitions. At my job, we have some timezone specific code where we often see spikes in metrics due to random timezone shifts around the world. Just for fun, I wanted a way to easily see where and what this timezone shift might have been, so built this mini site to do so. Its fully clientside and works by making use of the Internationalization API, so if you need an API for this you're coming to the wrong place, but feel free to yoink the code. Its just one fat index.html file. Served off my VPS via…
2025 · tz.pert.dev
- 18IM
Hey! I'm a solo developer having fun learning Go. I have a side hustle and wanted to implement currency localization. I could use existing IP databases, but hosting on serverless is slow. So I built my own. I was surprised how fun it can be to use Go, and it's fast. Thankfully, Go's speed makes up for my dodgy code. Anyway, I'd love to get some feedback on my website/API. After a few weeks of testing and losing money on ads, I'm confident it's very reliable. This isn't a promo. It's basicly free (30k lookups/month), so there's no need to pay. Any advice or tips on how to grow and…
2024 · ipflare.io
- 19RIRyd.io▲9
Ryd.io As a capstone project for Galvanize's data science immersive I took another look at the NYC Taxi data set. A ton of analysis has been done on individual rides/cars and I was curious about what story would be told by looking at this data through the aggregate. Through the clustered map you can identify different 'personalities' of the city with a birds eye view. Check it out here http://ryd.io/cluster_map I've just spent past couple weeks working hard on this project and would love to talk to anyone about it if they are interested. After the conclusion of the…
2015
- 20WD
Hi guys, wanted to show my (few) weekends project: http://wherehop.com A free app for you to basically see the best neighbourhoods to live in in many cities around the world. It uses data pulled from various sources to rank the best areas to live. Let me know your thoughts and how it can be improved.
2017
- 21UP
Throwaway here from a long time lurker. I've been frustrated by the media coverage of the protests since February - first the lack of it, then the overemphasis on inevitable flashpoints. It all misses the point that it's a broad, organic, mostly peaceful, and increasingly growing movement. Recently I ran across a great data source from an individual backed by a hard working team of 20 volunteers, We (the People) Dissent. They've been building a Google Sheet, tracking event locations from multiple sources with source links. Which inspired this interactive map - it attempts to illustrate where…
2025 · protestmap.info
- 22IB
The idea is simple: click any place on the map, propose a name, others vote, or it will be auto-accepted in ~5min. No account needed for fresh locations or name duel - only to challenge already-renamed places or vote to prevent abuse. 40k renames so far, and surprisingly people mostly behave. Some names are genuinely creative and I keep learning random geography facts just by watching the map (did you know someone mapped every single animal in a Taiwan Kaohsiung zoo on OpenStreetMap?) Non-commercial, just a side project. Stack is SvelteKit, MapLibre, 40GB vector map self-hosted on Cloudflare…
Feb 2026 · rename.world
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- 24AW
I've built this as a side project last month. I know there are a few similar sites out there, but I've found them cumbersome to navigate with ads that slow down the experience. So I decided to take a stab at it and build my own version, with a minimalist UI (+ I implemented a custom right-click menu to enable navigation even when the UI is hidden), ad-free, just for fun. There are over 130+ cities that you can explore right now, but I'm constantly adding new ones.
2025 · citywalki.com
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