Realtime collaborative heatmap hack for you to click

In plain words

This is a real-time collaborative heatmap application where multiple users can click on a shared map simultaneously to create heat visualizations. Launched in 2011, it lets groups interact with the same interface at once, with clicks registered and displayed instantly across all connected browsers. The tool is designed for anyone interested in collaborative visualization experiments or interactive group activities.

written from the facts on this page · September 2026

• 
  Mapus2021 · github.com · ▲619

  An open source map tool with real-time collaboration

• 
  heatmap.js2014 · patrick-wied.at · ▲132

  Dynamic Real-time Heatmaps for the Web

• 
  Heat Maps (SumoMe app)2014 · bdow.com · ▲204

  See where people click so you can improve your page

• 
  Competitive Heatmap Analysis2018 · ▲136

  Any website's heatmap data is at your fingertips

• 
  Git Heat Map – a tool for visualising git repo activity for each file2023 · github.com · ▲173

  Visualise a git repository by diff activity. Contribute to jmforsythe/Git-Heat-Map development by creating an account on GitHub.

• 
  Visualize user behaviour with heatmap.js2014 · patrick-wied.at · ▲12

  An easy to use, open source, data visualization library to help you create beautiful heatmaps for your projects

• 
  SimCity, but with Permits▲909

  A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.

  Life & fun · 1d ago · permit.petercai.com

• IV
  I've been paying for a rural Tanzanian's education for 10 years▲778

  Life & fun · 14d ago · tanzaniaeducationproject.org

• 
  Bigwords.page – Turn any screen into a sign. The URL is the app▲728

  Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.

  Life & fun · 15d ago · bigwords.page

• 
  Guitoro, a virtual guitar you strum with your keyboard▲573

  Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.

  Life & fun · 8d ago · guitoro.com

• 
  See *almost* any carriers phone settings▲432

  Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.

  Life & fun · 12d ago · carrierexplode.com

• 
  The whole Solar System and every tracked satellite, live in the browser▲407

  Life & fun · 22d ago · space.bl2.net

• 
  Codecademy.com, the easiest way to learn to code▲787

  I've been a longtime member @ HN, but I haven't been a developer. In fact, my only HN submission has been one asking how to learn to code (http://news.ycombinator.com/item?id=820741). My cofounder and I decided to solve the problem by making a simple, interactive way to get started with Codecademy. We'd love your feedback. If you're interested in helping us to get more courses up (on any topic!), please send us an email at [email protected].

  Dev tools · 2011 · codecademy.com

• LB
  Like Button for Hacker News▲568

  Life & fun · 2011 · hnlike.com

• WM
  We made a spam-free lyric search engine▲291

  Life & fun · 2011 · songrabbit.com

• 
  a free multi-user whiteboard with unlimited, zoomable surface▲215

  Sketchub is a place to share your projects and to find projects made by other people. Apps, 3D models, hardware builds and more. Everything on Sketchub is open.

  Life & fun · 2011 · sketchub.com

• MW
  My weekend project - preview TV sizes on your wall▲179

  Work · 2011 · tvsizematters.com

• 
  I shipped my first product▲163

  I shipped my first product Today, the first version of TrackMe is available from the App Store. This is my first product as an indie developer, and even though it’s very simple, I’m proud to have gone...

  Dev tools · 2011 · chriseidhof.tumblr.com