Your knowledge, connected to its source.
BrainFrame is a local-first reader and note-taking system that keeps every thought linked to the material it came from — images and Markdown now, more formats on the way — across every device you own.
One home for everything you read and think
Bring your sources and your notes into a single, connected library.
Read your files
Images and Markdown work today. PDF, EPUB, DOCX, archived web pages, and even Linux man pages are on the roadmap — one reader, more formats over time.
Notes linked to source
Every note keeps a durable link back to the passage that inspired it, so you always know where an idea actually came from.
See notes in context
View a note on its own, or in the flow of the original source. Follow your thinking back to where it started.
Built for every device
Desktop builds for Windows, macOS, and Linux today. Native iOS and Android apps and cross-device sync are in active development — see the roadmap.
Your data, yours first
Everything lives on your devices by default. Notes in plain text, links in open formats you can follow without us. The cloud is an option, never a requirement.
Connect ideas
Build a second brain that links sources, notes, and thoughts that were previously scattered across apps and formats.
Built on principles, not lock-in
Today's tools are remarkable, but each is an incomplete take on the same idea. BrainFrame is built around a few commitments we won't compromise.
Local-first
Your library and notes live on your machine. Work offline, own your files, and never depend on someone else's servers to reach your ideas.
Open, neutral formats
Notes are plain text. Source links are stored so you can find your way back to an idea even without BrainFrame installed.
One idea, fully realized
Obsidian, Notion, Roam, Org-mode and others each capture a piece of this vision. BrainFrame is the attempt to implement the whole of it.
Help put BrainFrame on your phone
BrainFrame's mobile apps are almost ready for testing. Sign up to be among the first testers on iOS and Android, and help push toward a public launch on the App Store and Google Play.
Sign up to test on iOS & AndroidYou share your email to test BrainFrame — here's mine, in the same spirit. Questions, ideas, or just want to talk? Write anytime: getbrainframe@gmail.com