Digitale Plakatwand

What it does

Physical bulletin boards are a staple of German community life — nobody brought them online properly. Digitale Plakatwand gives every German city its own dedicated visual poster wall. Unlike generic classifieds, it's not a listing — it's a poster. Built-in editor, instant go-live, no contracts. City-specific targeting at under €10/month has no direct equivalent in the German market. Live in 30+ cities.

• AW
  A website for sharing the "Good, Bad, and Why"s of urban spaces2025 · dedede.de · ▲89

  Hello HN! We're a small team in Kyoto building a website called dédédé (https://dedede.de/en) that invites people to share the various positives, negatives, oddities, etc. they find in urban spaces. The project grew out of an earlier effort where we'd built an app that assisted participatory urbanism workshops run by local nonprofits. With the new platform, we're trying to build something similar but more casual and hopefully with broader appeal, that'll be fun to use even outside of formal workshop situations. We'd love to hear your thoughts!

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  Wanderlog Pinboard2021 · ▲113

  A digital corkboard: map your and your friends' travels

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  Bidboard2018 · ▲108

  A digital billboard to promote your startup

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  finismaJun 2026 · ▲6

  Free PDF → ZUGFeRD converter for the 2027 EU e-invoice law

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  unterschreib.esJul 2026 · unterschreib.es · ▲2

  Get documents legally signed — simple, fast, digital.

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  Mietwagensparen.deJul 2026 · mietwagensparen.de · ▲6

  Track rental car prices and rebook when prices drop

• 
  Browzer▲427

  Put your technical content on autopilot

  Growth · 14d ago · trybrowzer.com

• 
  AstraPixels▲267

  ​​A pixel-art solar system at its real current positions.​

  Growth · 29d ago · astrapixels.com

• 
  Brila▲1,367

  One-page websites from real Google Maps reviews

  AI · Apr 2026 · brila.ai

• AG
  A game where you build a GPU▲964

  Thought the resources for GPU arch were lacking, so here we are

  Life & fun · Apr 2026 · jaso1024.com

• IB
  I built a tiny LLM to demystify how language models work▲915

  Built a ~9M param LLM from scratch to understand how they actually work. Vanilla transformer, 60K synthetic conversations, ~130 lines of PyTorch. Trains in 5 min on a free Colab T4. The fish thinks the meaning of life is food. Fork it and swap the personality for your own character.

  AI · Apr 2026 · github.com

• 
  Fathom 3.0▲803

  AI meeting notes: now bot-free, in ChatGPT & Claude + more

  AI · Apr 2026 · fathom.ai

• BC
  Brutalist Concrete Laptop Stand (2024)▲786

  Life & fun · Apr 2026 · sam-burns.com

• IB
  I built a frontpage for personal blogs▲783

  With social media and now AI, its important to keep the indie web alive. There are many people who write frequently. Blogosphere tries to highlight them by fetching the recent posts from personal blogs across many categories. There are two versions: Minimal (HN-inspired, fast, static): https://text.blogosphere.app/ Non-minimal: https://blogosphere.app/ If you don't find your blog (or your favorite ones), please add them. I will review and approve it.

  AI · Apr 2026 · text.blogosphere.app