Shared kanban board with no backend — a JayDB Cloud example
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README
JayDB Kanban Demo
A real-time, multi-user Kanban board built with zero backend servers.
Built on JayDB Cloud, this demo shows how simple it is to build collaborative web apps with no backend of your own at all—no API servers, no custom auth services, and no databases to manage. Your app is just a few static files; the browser talks directly to JayDB Cloud for login and data.
👉 Try the Live Demo
(Tip: Open it in two browser windows side-by-side to watch cards, edits, and presence sync in real time.)
Why JayDB?
- No backend to run — Ship your app as static HTML & JS on GitHub Pages, Cloudflare Pages, or S3.
- Built-in per-user login — Users sign in with Google or GitHub; JayDB Cloud handles tokens directly in the browser with zero client secrets exposed.
- Conflict-free collaboration — Move cards and edit text together. Standard HTTP ETags prevent accidental overwrites.
- Live presence — See who's online without WebSocket servers.
- $0 while idle — No servers running means no idle hosting bills.
How It Works
The browser communicates directly with JayDB Cloud using the official JayDB Cloud Frontend SDK (@jaydb/cloud via native importmap):
- Sign In: User signs in with Google or GitHub (PKCE via
Auth). JayDB Cloud issues a scoped access token without client secrets. - Direct Storage: The browser reads and updates cards with optimistic concurrency control (
db.getanddb.putwithifMatchETags viaJayDB). - Sync & Presence: The client polls for card changes and sends heartbeats to show who's active.
- Stateless Collaboration: Share board invites with cryptographically signed tokens via
TreeACL.
Run It Locally
python3 -m http.server 5173 --bind 127.0.0.1
Open http://localhost:5173 in your browser.
Build Your Own
Visit jaydb.com to learn more and get started for free.
Similar repos
Shared kanban board with no backend — a JayDB Cloud example
See the codeSee what people are saying
README
JayDB Kanban Demo
A real-time, multi-user Kanban board built with zero backend servers.
Built on JayDB Cloud, this demo shows how simple it is to build collaborative web apps with no backend of your own at all—no API servers, no custom auth services, and no databases to manage. Your app is just a few static files; the browser talks directly to JayDB Cloud for login and data.
👉 Try the Live Demo
(Tip: Open it in two browser windows side-by-side to watch cards, edits, and presence sync in real time.)
Why JayDB?
- No backend to run — Ship your app as static HTML & JS on GitHub Pages, Cloudflare Pages, or S3.
- Built-in per-user login — Users sign in with Google or GitHub; JayDB Cloud handles tokens directly in the browser with zero client secrets exposed.
- Conflict-free collaboration — Move cards and edit text together. Standard HTTP ETags prevent accidental overwrites.
- Live presence — See who's online without WebSocket servers.
- $0 while idle — No servers running means no idle hosting bills.
How It Works
The browser communicates directly with JayDB Cloud using the official JayDB Cloud Frontend SDK (@jaydb/cloud via native importmap):
- Sign In: User signs in with Google or GitHub (PKCE via
Auth). JayDB Cloud issues a scoped access token without client secrets. - Direct Storage: The browser reads and updates cards with optimistic concurrency control (
db.getanddb.putwithifMatchETags viaJayDB). - Sync & Presence: The client polls for card changes and sends heartbeats to show who's active.
- Stateless Collaboration: Share board invites with cryptographically signed tokens via
TreeACL.
Run It Locally
python3 -m http.server 5173 --bind 127.0.0.1
Open http://localhost:5173 in your browser.
Build Your Own
Visit jaydb.com to learn more and get started for free.