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Life & fun · alternatives · 2026

24 alternatives to Free tool to mark points and polygon regions

For a game I'm developing I needed an easy way to create hotspot areas on images. So I hacked together a small tool to do so and before I knew it, I had created an entire app :-) It allows you to generate JSON or YAML from the coordinates you tack on the image. tack runs entirely in your browser, there is no server side component to it, so good in terms of privacy. Hope this is helpful.

Tack is a browser-based tool for game developers and designers to mark points and polygon regions on images. Users place markers to define hotspot areas, then export the coordinates as JSON or YAML data. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1IM

    Hi HN! I made many small web games in the past with Unity or Phaser. But this time I wanted to make something completely on my own. So I coded a basic game framework in plain JavaScript, and used it to make Almost Pong. This was a really fun project that taught me a lot about JavaScript, and I plan to make more minimalist games with this framework. Interesting fact: Almost Pong doesn't load any assets, all sprites and sounds are generated with code. Happy to answer questions, and please let me know if you have any feedback on the game. Thanks!

    2022 · lessmilk.com · its alternatives →

  2. 2
    Pictogon▲583

    The fastest and easiest way to create interactive images

    2017 · its alternatives →

  3. 3

    Hello, My name is Yahia, I've been working on scraping products for a long time and maintain a couple of free sites in my spare time (E.g. knifegeek.io) What prompted this is i've rebuilt scraping infra at every company I've started and finally just made it a product. Pass a URL, get clean markdown, html, images, sitemap or pass a domain, get logos, colors, socials, industry data. Goal is to offer a better service than VC funded competitors at a fraction of the cost. Stealth is included and automatic at no additional cost (normally an upcharge by alternatives). Would love your honest thoughts.

    Jul 2026 · context.dev · its alternatives →

  4. 4IB

    I've been working on an MMORPG that is now in alpha as a solo developer. Here are the major open source technologies that I use: Blender - 3D modeling software for creating the overall environment and every game object. I've gotten a lot of CC and Public Domain assets from https://poly.pizza GLTF - I export assets from blender to the GLTF asset format JSON - I write a JSON config for every game object that describes things like its name, its interactions, its collisions, etc. Node.js exporter - I iterate over the environment and every asset to create a scene hierarchy. I use…

    2024 · alpha.reconquer.online · its alternatives →

  5. 5

    Explore advanced web development for online casinos at Juliango 202. Learn about programming languages, RNG algorithms, and secure platform architecture.

    2018 · juliango202.com · its alternatives →

  6. 6LW

    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 · its alternatives →

  7. 7
    Dotgrid▲365

    A simple vector illustration tool.

    2018 · hundredrabbits.itch.io · its alternatives →

  8. 8

    Flexible tool to build planet-scale vector tilesets from OpenStreetMap data fast - onthegomap/planetiler

    2021 · github.com · its alternatives →

  9. 9IM

    I was fascinated by this [0] and this video [1]. After many struggles, I finally built this app that traces images using circles similar to what these videos had shown. The most challenging part (to me) is to find a way to convert images to vector lines. I had tried Potrace, but its output is not suitable for my use case: too many small elements share the same border. Potrace's goal is to represent the original image faithfully using vector lines. But I want to trace the image edges. After searching and trying some Potrace alternatives in vain, I finally found my keyword. Surprisingly (to…

    2022 · phqb.github.io · its alternatives →

  10. 10IM

    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 · its alternatives →

  11. 11
    MapScroll▲109

    Hi HN, I built this after getting frustrated trying to map out things like “Ancient mayan ruins” or “James Bond movie locations” on Google "My" Maps. You basically have to drop pins manually, hunt down photos, copy links, it’s slow and never feels like an actual story. With MapScroll, you just type something like “Marco Polo’s route” or “forgotten WWII sites in France”, and it geocodes, grabs images + articles, and plots everything into a shareable story map. Each marker comes with a little gallery and sources tied to your prompt. You can also refine the first draft which AI creates before…

    2025 · mapscroll.ai · its alternatives →

  12. 12IM

    I've posted this game here before, hopefully a repost is fine as the game has changed quite a bit (improved AI, improved mapeditor, much quicker gameplay, etc). Game is based on JavaScript/Canvas and WebSockets. On the browser side the map is pre-rendered (as a background image), just the mobile units/buildings and animations are dynamically rendered. The lobby server is made in node.js, but the game server is C++ for performance reasons (mainly the pathfinding). I found the C++ WebSocket libraries out there to be too difficult to use so I made my own based on the rfc. Overall I…

    2022 · battle-of-flags.com · its alternatives →

  13. 13G3

    I made a web app to generate 3D models of real places on earth from land cover and elevation data. Click anywhere on the map to get a polygon, and then click "generate". It should work at most scales, but if your watershed or region selection is too large, the result can be less exciting because it's so flat. As a warning, the 3D models can sometimes be too much for my phone. It's nicer on desktop. I'm still working better on mobile support. The land cover data I'm using gives a cool effect, but at some point I'd like to add in global imagery and clouds. The backend is a Python thread…

    2025 · topography.jessekv.com · its alternatives →

  14. 14TL
  15. 15

    Create Your Map App in Minutes—No Code, Just a CSV file

    2024 · its alternatives →

  16. 16
    Spot▲125

    Map-based video sharing app

    2021 · apps.apple.com · its alternatives →

  17. 17IM

    Technologies used: Leaflet (frontend) Turf (Geojson generation and Voronoi generation) I noticed that my neighborhood is all Lawsons, so I got the location of all Conbinis and ran some basic analysis to see if these pockets of brand territory are common. I haven't worked much with web frontends before, so feedback is welcomed. I also have some ideas to maybe expand upon, like making the territory calculations based on streets and other geographical features rather than just beeline distance. The site isn't tested too much on mobile yet, but should be ok. Currently the frontend code and…

    2024 · conbini.kikkia.dev · its alternatives →

  18. 18

    https://github.com/PlumeCat/tack Hi HN! Tack is a scripting language I've been working on sporadically for the past year or so, and intensely for the past few weeks. It originated out of a desire for something that was like Lua, but with a more familiar syntax, and without some of the other surprises in Lua such as the 1-indexed tables. It's also been a great learning project, and a very satisfying challenge! While the current version is early beta at best, I hope to continue working on it and maybe see some adoption. Despite the relative lack of optimization, I'm very…

    2023 · github.com · its alternatives →

  19. 19

    Interact with your local community

    2016 · its alternatives →

  20. 20

    Add GPS coordinates, AI-generated tags, and EXIF/IPTC/XMP metadata to photos online. Geotag images for Local SEO and Google Business. Free plan available.

    Jul 2026 · geoimagetagger.com · its alternatives →

  21. 21AB
  22. 22

    If React, Vue, Angular, Bootstrap or Tailwind were countries

    2022 · 4it.bz · its alternatives →

  23. 23

    Create your own 3D printable scenery, buildings and dungeons

    2021 · terraintinker.com · its alternatives →

  24. 24BT

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Free tool to mark points and polygon regions alternatives…