Start a Spark.

Pick an app and send the link. It runs right here, online while this tab is open and gone when you close it. Nothing to install.

Setting up this tab…

Want it to stay? Keep it with Seamside.

Always on

Your apps stay online while your computer is, with no tab to keep open.

Your own apps

Bring an app from Lovable, Bolt or Claude, or make one, and share it the same way.

Your data, where you want it

What an app keeps is a folder on your computer that you can open.