
Capptivo
Free open-source screen recorder & demo editor
In plain words
Capptivo is a free, open-source screen recorder and demo editor available on macOS, Windows, and Linux. It lets users record video locally, add follow-cursor zoom effects, apply visual polish, and embed captions directly without requiring an account or subscription. The tool is designed for developers and content creators who need to produce polished software demonstrations and tutorials.
written from the facts on this page · September 2026
From the sources
Capptivo is a free, open-source screen recorder and demo editor for macOS, Windows, and Linux. Record locally, add follow-cursor zooms, polish the look, burn on-device captions, and export, no account, no subscription. Give your demos the spotlight they deserve.
More dev tools this month
the category →



Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

Lettertrace▲375Track your AI visibility for free (using your own API keys!)
Dev tools · 25d ago · lettertrace.com
Launched alongside, August 2026
the whole month →- TL
Life & fun · 9d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 16d ago · simedw.com