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Products that do what I built custom GIS Engine for investment mapping does
Hi, Out of desperation using slow and expensive ESRI ArcGIS, we're building a custom GIS engine to facilitate presentation layers for urban mapping that is easier to code and communicate with other smaller applications. The app we built was meant to help local people or investors perform preliminary due diligence using location-specific parameters (demographic profile, zoning regulation, business requirements, POIs, indexes, and potential calculator). With this app, we're helping people to assess which location is best to build their next business. We also managed to add machine learning…
- 1AW
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
- 2EM
I've been working on this project for about 4 years. It began as terrain only because world wide elevation data was publicly available. I then added buildings from OpenStreetMap (crowd sourced) and more recently from Overture Maps data. Some computer vision/machine learning advancements [1] in the past few years have made it possible to estimate tree canopy heights using satellite imagery alone making it possible to finally add trees to the map. The data isn't perfect, but it's within +/- 3 meters of so. Good enough to give a general idea for any location on Earth. Happy to answer…
2024 · shademap.app
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- 5IB
I love culture + travel, and one of my favorite pastimes is dropping into random streets on Google Street View. I just LOVE getting a tiny snippet into how people live, the architecture, and discovering hidden corners of places I'll probably never visit. I'm kinda weird like that. When AI came along, I started asking it to explain what I was looking at - and I learned a ton. I couldn't stop using this combo. So I built Streetwhip. It's kinda like reverse Geoguessr - instead of guessing where you are, you get educated about places as if you had a smart local guide with you. What used to be…
2025 · streetwhip.com
- 6IM
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
- 7PN
Hello HN, Long-time lurker, first-time poster here. I've created a service that creates a "flow map" of your mobile app. Check it out at: https://prodscape.net. The goal is to reduce last-minute regressions, promote holistic discussion, and help develop more ownership within an organization. This is something that I would have liked to have had when I was working at a big company. Some caveats: 1.) Only iOS is currently supported but Android-support will be coming soon. 2.) You need a developer-signed IPA file (see the guide on creating an IPA file here:…
2022
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Im working on a mind mapping app that would allow for integration of gamification features and be nicer and easier to remember. I was missing more advanced graphics from apps and being able to treat it as my note taking and learning tool. i.e. how (and why?) should I remember a mind map if it looks the same like all other maps and all i can do is pick couple of shapes and dashed/dotted lines? this simply doesnt work with my brain so i decided to create something better :) map on page is a preview of this, but im curious about the quiz, typing games and cheatsheet, would love some…
Oct 2025 · mindmapsonline.com
- 9IB
A while back, I built a simple app to track stocks. It pulled market data and generated daily reports based on my risk tolerance. Basically a personal investment assistant. It worked well enough that I kept going. Now, the same framework helps me with real estate: comparing neighborhoods, checking flood risk, weather patterns, school zones, old vs. new builds, etc. It’s a messy, multi-variable decision—which turns out to be a great use case for AI agents. Instead of ChatGPT or Grok 4, I use mcp-agent, which lets me build a persistent, multi-agent system that pulls live data, remembers my…
2025 · github.com
- 10IM
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
- 11IM
Hi HN, I made SmartMap — a tool where you ask an open-ended question on maps, like: - "Where can I find coworking cafes with power sockets and Wi-Fi in Shibuya, Tokyo?" - "Places that inspired Studio Ghibli movies in Japan" You can also ask it to plot interactive journeys, like: - "Places Alexandra David-Néel visited on her way to Lhasa" - "Train stops along the original Orient Express route" It returns a live, interactive map with the results plotted as pins. Originally built this to scratch my own itch while traveling and researching or learning about new places. SmartMap makes that step…
2025 · smartmap.space
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Today you can easily adopt AI coding tools because you have git for branching and rolling back if AI writes bad code. We haven't seen this same capability for data and decided to build it ourselves. Nile is a new kind of data lake, purpose built for using with AI. It can act as your data engineer or data analyst creating new tables and rolling back bad changes in seconds. We support real versions for data, schema, and ETL. We'd love your feedback on any part of what we are building - https://getnile.ai/ What do you think?
Jan 2026
- 13MO
Hi HN! We're happy to announce the launch of Mapedia.org, an open source crowdsourced learning map! Mapedia is a new kind of learning platform at the crossroad between Wikipedia, Google Maps and Khan Academy: a learning map built collaboratively to support online learners to learn any topic seamlessly. We built an interactive learning map of topics to be able to visualize the different fields of knowledge, what concepts are included in them and how they relate to each other. This allows for curiosity based exploration, identifying knowledge gaps (unknown unknowns) and figuring out what to…
2022 · mapedia.org
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2022 · live.ossinsight.io
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Hi HN! I am an undergrad student trying to build interesting things with AI. Recently, I was looking for a dataset I could use for a new project. I realized that it is really frustrating to go through all the government websites (with terrible UX) just to find some usable dataset. I set out to build a GitHub for datasets, named DataHub. Right now, we have more than 1000 datasets from Montréal and New York City, with more cities coming soon (and possible government agencies). All of this is wrapped into a powerful search. It's a breeze to find a dataset to work on. I'd be interested to know…
2017
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Hi HN, I am a solopreneur in the evenings and a software engineer during the day. In the past, I have created lots of calculators for my web projects and freelancing friends. These were pretty basic, but users always welcomed them. I also used currently available builders, but the problem was that they were either slow, broke on mobile devices, had nonsense page view limits, or were expensive. Some even ticked all those boxes. So I have decided to create my own, with a simple interface, and called it Creative Widgets (if it ever takes off, I plan to add more exciting stuff like charts, etc,…
2024 · creativewidgets.io
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Hi HN, I'm a solo developer learning to code, and I'd love to share my second real project: MapMyLearn, an AI-powered app that automatically generates personalized learning paths based on any topic you input. What it does: Takes a topic (e.g. "history of capitalism", "learn Rust", or "data storytelling") Uses AI to break it down into a structured course with modules and submodules Each submodule includes: - Detailed, pedagogical content (developed based on online sources to mitigate hallucinations) - A quiz of 10 questions - Recommended resources - An AI chatbot for Q&A - Optional audio…
2025
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Hey all, Justin here. I previously built Phind, the AI search engine for developers. One of the biggest problems we had there was figuring out what went wrong with bad searches. We had tons of searches per day, but less than 1% of users gave any explicit feedback. So we were either manually digging through searches or making general system improvements and hoping they helped. This problem gets harder with agents. Traces are longer and more complex. It takes more effort to review them, so I'm building a tool that lets you analyze LLM outputs directly to help developers of LLM apps and agents…
Jan 2026 · trails-red.vercel.app
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Hi HN. I had faced an issue where I wanted to know how a place I was travelling to looked like. Like everyone else I looked at google maps and snap chat too. But Google streetview images were usually old and snapchat snaps lacked control. So I built GeoQuests for anyone who wants to know what’s going on on Earth. You drop a quest at a real location. People see it on the map, go there, and complete it by taking a photo when they’re close enough. The app checks the image's GPS coordinatee, time of the image and if the image fits the request's description. I am using Gemini to verify the image.…
Feb 2026 · geoquests.io
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Hey HN! I’m one of the co-founders of Ampersand and we’re excited to launch our developer docs today! Ampersand is built for SaaS engineers who want to: - Read data from their customers’ SaaS (e.g. Salesforce, Hubspot). - Write data to their customers’ SaaS. - Subscribe to events happening in their customers’ SaaS (including creates, deletes and field updates). We feature a Terraform-like declarative interface for defining integrations, embeddable UI components for your users to set up and manage their integrations, and a management console for your team to monitor and troubleshoot. We’re…
2023 · docs.withampersand.com
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Hello everyone, I have always loved coding and in the couple I was thinking of making an open source project and it turned out to be awesome I hope you guys like it. I present Explore Singapore which I created as an open-source intelligence engine to execute retrieval-augmented generation (RAG) on Singapore's public policy documents and legal statutes and historical archives. The objective required building a domain-specific search engine which enables LLM systems to decrease errors by using government documents as their exclusive information source. What my Project does :- basically it…
Feb 2026 · github.com
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Hi HN, I built Repomap, a tool that generates interactive architecture diagrams from any GitHub repository. It uses a Rust + tree-sitter engine to analyze the codebase and produces a D3-based graph UI with clustering, zoom/pan, and live progress updates
Feb 2026 · github.com
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Hi! I'm a long-time Android dev and shorter-time iOS dev. I work on this cool project called Literal (https://www.literal.ai/devs). Demo available without any signup requirement: https://literal.ai/hn You can upload your own app recording or use a sample of the Calm app. Literal will map out the screens on an interactive canvas. I built Literal, because I often field a lot of questions from PMs and other folks about what the new app release looks like. I used to send out screenshots in Slack and manually document analytics events as well as what APIs were hit.…
2022 · literal.ai
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Hi there, I'm building a map tool - Tasmap. It combines the functions of articles, maps, and design. The goal is let people can easily build beautiful maps without design/engineering effort. There are many demo and use-cases on landing page, take a look and give it a try :) - Eddie Hsu
May 2026 · tasmap.app
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