6 Heptabase Alternatives for Visual Thinkers (2026)

Heptabase proved that some brains think in space: cards on whiteboards, PDF highlights that become notes, arrows between ideas. It costs Pro $8.99/month billed yearly ($11.99 monthly) after a 7-day trial, and your work lives in its cloud. If the price, the account, or the proprietary storage bothers you, these six alternatives cover the same visual ground differently.

Disclosure: we make Toxvas, number six. No affiliate links below.

The short version

App	Canvas model	Works offline	Your data lives in	Price
Obsidian Canvas	Infinite canvas inside a Markdown vault	Yes	Local .canvas JSON + Markdown files	Free; Sync $4/mo yearly (optional)
Scrintal	Docs + boards, visually linked	Yes (desktop)	Scrintal’s cloud	Free tier; paid roughly $10–15/mo
Milanote	Boards, columns, mood-board templates	Mostly (apps cache)	Milanote’s cloud	Free to 100 notes; paid from ~$10/mo
Kosmik	Infinite canvas + built-in browser	Yes (apps)	Kosmik’s cloud	Free tier; paid from $11.99/mo yearly
Apple Freeform	Infinite freeform canvas	Yes	iCloud (proprietary)	Free with your Apple devices
Toxvas	Infinite board: cards, files, ink	Yes, fully	Markdown + JSON files in your folder	$9 once; free 7-day trial

1. Obsidian Canvas — the files-first canvas

Canvas is built into Obsidian’s free core: infinite canvases where cards, notes, images, and embeds connect — and every canvas is a local .canvas JSON file sitting next to your Markdown in the vault. No account, no subscription, sync optional ($4/month billed yearly) or DIY via iCloud/Git.

Pick it if you already live in Markdown and want spatial arrangement as one view among many (graph, notes, canvas). Skip it if the canvas is the whole product for you — in Obsidian it’s a feature inside a PKM system, with a learning curve to match.

2. Scrintal — the researcher’s board

Docs and boards designed together for visual research: long-form notecards, visual links between them, journals, and AI features. Cross-platform with web access and real-time collaboration.

Pick Scrintal if your work is literature-heavy research with docs that need to connect visually. Skip it if subscriptions fatigue you — paid plans run roughly $10–15/month — or if you want your notes as files rather than rows in a cloud service.

3. Milanote — the mood-board classic

Boards, columns, and templates that designers have used for a decade: fast to start, lovely to look at, good for collecting references into a shared visual space.

Pick Milanote if you’re mood-boarding with a team and want zero learning curve. Skip it for deep knowledge work — the free tier caps at 100 notes, paid starts around $10/month, and everything lives in Milanote’s world, not yours.

4. Kosmik — the canvas with a browser inside

An infinite canvas with a built-in browser: read papers, watch videos, clip the web, and arrange it all spatially. Native Mac and iPad apps, a genuinely useful free tier, and paid plans from $11.99/month billed yearly.

Pick Kosmik if web-sourced visual research is your day job and you want the browser and the board in one window. Skip it if plain-text ownership matters — like most cloud canvases, your work lives on their servers.

5. Apple Freeform — the free infinite sheet

Already on your devices, free, fast, genuinely infinite, with solid collaboration over iCloud. Sticky notes, drawings, media, shapes — zero setup, zero cost.

Pick Freeform if brainstorming and sketching with other Apple users is the job. Skip it the moment notes need structure: no Markdown, no backlinks, no files to take with you — it’s a sheet, not a system.

6. Toxvas — the canvas over your files (our take)

We wanted Heptabase’s spatial thinking with Obsidian’s file ownership: every card is one Markdown file in a folder you choose, boards are JSON files beside them, and a spec file documents the format so any editor, script, or agent can read the workspace. Media lands on the board directly, ink connectors follow cards, section frames group projects — all offline, no account, $9 once.

Where Toxvas honestly loses: no mobile or web apps, no real-time collaboration, no PDF-annotation workflow, no plugin ecosystem. If your research life is highlighting PDFs into cards on five devices with collaborators, Heptabase or Kosmik genuinely fit better. If your unit of work is a folder of Markdown you want to arrange, try the trial — the folder stays yours either way.

Choose by what you can’t give up

• Files + canvas, free: Obsidian Canvas.
• Research docs that link visually: Scrintal.
• Fast team mood-boards: Milanote.
• Web research in one window: Kosmik.
• Free sketching with Apple people: Freeform.
• A canvas that is a folder: Toxvas.

For the head-to-head on the category leader, read Heptabase vs Toxvas next — and for the file-ownership argument in full, why plain-text notes outlive every notes app.