ReplayYouTube

What it does

ReplayYouTube is the ultimate web player built for musicians, dancers, and focused learners. Precisely loop specific A-B sections, fetch real-time lyrics, play entire playlists without interruptions, and even download media directly. No ads, no tracking cookies, just pure uninterrupted replay.

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  Sideplayer2015 · ▲267

  Watch YouTube while you browse the web.

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  Youtube Looper2024 · ▲225

  Loop any YouTube video or YouTube music song

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  Super Looper2014 · ▲133

  Make music in your browser

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  YTMP2021 · ▲104

  Play YouTube videos as audio in background without ads

• RY
  Reversing YouTube’s “Most Replayed” GraphJan 2026 · priyavr.at · ▲87

  Hi HN, I recently noticed a recurring visual artifact in the "Most Replayed" heatmap on the YouTube player. The highest peaks were always surrounded by two dips. I got curious about why they were there, so I decided to reverse engineer the feature to find out. This post documents the deep dive. It starts with a system design recreation, reverse engineering the rendering code, and ends with the mathematics. This is also my first attempt at writing an interactive article. I would love to hear your thoughts on the investigation and the format.

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  YouTube Music Loop2023 · ▲121

  Play & listen your favorite music in loop without ads

• 
  Clipto MCP▲640

  Let agents source clips from terabytes of your local video

  Work · 19d ago · clipto.com

• 
  HyNote for Mac▲383

  Free local transcription that is 100% Private

  Work · 18d ago · hynote.ai

• 
  VoiceOS App Store▲330

  The app store for voice native apps that lives in your notch

  Work · 29d ago · voiceos.com

• 
  Scrimba Explain▲325

  Ask any question, get a video back instantly

  Work · 25d ago · scrimba.com

• 
  CleanShot 5.0 with Studio Mode▲278

  Mac-native app for screenshots, recordings and collaboration

  Work · 5d ago · cleanshot.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