Caspian
Anchor your notes to anything.
What it does
Caspian is a local-first knowledge base that lets you anchor plain Markdown notes to anything: a diagram, a map, a floor plan, a 3D model, over a vault you own.
Turn any picture, map, or 3D model into a page. Drop a pin, write the note in plain Markdown, and keep it forever, on your disk, not someone else's cloud. Import an image, a 3D model, a map, or a webpage, then drop pins or draw regions straight onto it and start writing notes for each one. Some canvases read an outside feed and redraw themselves as it changes. Pin a note to something that moves, a vessel or a ranked table row, and the note stays attached to it. Caspian doesn't standardize how a canvas looks, only how it links out to your notes. Navigate by clicking anchors on a picture instead of hunting through folders or a graph view. Every note is a plain Markdown file on your disk. No…from caspian.md
Does the same job
all alternatives →
- TMTextual Markdown – a Markdown “browser” in the terminal2022 · github.com · ▲254
Hi HN, This is a TUI app which displays interactive Markdown documents. Interactive in the sense that you can scroll code fences / tables / and click links. There's a Table of Contents extracted from the MD, and a very rudimentary browser like forward + back. I'm thinking it could be the starting point for a variety of hypertext like applications in the terminal. Very much a work in progress.
Caspian NotesApr 2026 · marketplace.visualstudio.com · ▲2A Markdown notes library for developers — visually browsed
- FAFrogmouth – A Markdown browser for the terminal2023 · github.com · ▲240
Hi HN, Frogmouth is a TUI to display Markdown files. It does a passable job of displaying Markdown, with code blocks and tables. No image support as yet. It's very browser like, with navigation stack, history, and bookmarks. Works with both the mouse and keyboard. There are shortcuts for viewing README.md files and other Markdown on GitHub and GitLab. License is MIT. Let me know what you think...
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Life & fun · 10d ago · louisabraham.github.io
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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.
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