Ristretto, an OSS sandboxed code playground/notebook written in itself
In plain words
Ristretto is an open-source code playground and notebook application built using its own technology. It provides a sandboxed environment where developers can write and execute code interactively. The tool is self-hosted and written in its own language, making it a self-referential project. It functions as a notebook for experimentation and testing code snippets in an isolated environment, suitable for developers who need a lightweight, self-contained coding workspace.
written from the facts on this page · September 2026
More dev tools this month
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Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com

Launched alongside, July 2024
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- IC
Many years ago, I made VJ softwares (to mix live visuals in clubs) for unexpected platforms like the Game Boy Advance, the Playstation 2 and the Raspberry Pi. This year, I’m back with a new web-app: Pikimov. Inspired by Photopea (a free Photoshop clone), I created this web-based motion design & video editor as an alternative to After Effects, to fill empty void. It's free, without signup, without cloud uploads (your files stay on your machine), and your projects are not used for AI models training.
AI · 2024 · pikimov.com
