Project memory for builders.
Forum is a local-first second brain. Every kind of document in one folder you can version like a repo and sync across desktop, mobile, CLI, and API.
Free tier · Open format · macOS · Windows · Linux
Extraction protocols
Every document in Forum is a plain file on disk. This note links to a live table of sources and a canvas map. Change one, and every reference stays in sync.
A document type for everything.
Most tools force your thinking into their blocks. Forum treats markdown, tables, canvases, boards and source files as equal, linkable citizens.
Sources
Query-able tables that link straight into your notes. No separate spreadsheet.
Dig season
Plan visually. Boards and spatial canvases live right beside your docs.
Clone it. Sync it. Own it.
Every workspace is a real folder you can clone to disk and keep in sync as you work. Or skip the checkout and reach the same files in the cloud with ls-and-grep style commands.
Sync locally
Clone a workspace to a real folder on disk, then let watch mode keep it in sync while you work.
Work in the cloud
List, search and read your documents straight in the cloud with familiar Unix-style commands.
Raw, open, and entirely yours.
An open-ended tool, not an opinionated workspace. The structure is yours. Forum just keeps it fast, linked and portable.
The second brain people are loving.
Researchers, engineers and writers who outgrew their old notes app.
“It finally clicked when I realised my whole vault is just a folder I cloned. My research syncs the way my code does.”
Mara OlssonComputational biologist“Notion made me bend my notes to its shape. Forum bends to mine. Tables next to canvases next to actual Python files.”
“The AI only answers from my own writing, with citations. No hallucinated nonsense, just my brain, searchable.”
“I write on my laptop, capture on my phone, and a cron job appends to my daily note. Same files, everywhere.”
Theo LindqvistSoftware engineer“Owning the files is the whole point. If Forum vanished tomorrow I'd still have a clean folder of Markdown forever.”
Amelia FrostTechnical writer“We onboarded a whole team by cloning one workspace. Everyone works in the same folder and it just stays in sync.”
Kenji WatanabeResearch leadBring your knowledge home.
Clone your first workspace in seconds. Free to start, open format forever.