Share what you make,
straight from your computer.
Put the app you built, or any folder you have, at a link anyone can open. It’s free, because your devices do the hosting.
Start fromLovableClaudeA folder
No sign-up required · All downloads
Build your own way.
Built it in Lovable?
Keep it online without the upgrade.
One prompt exports your app. It runs from your computer, at a link you share.
Bring your app
Working in Claude?MCP
Publish without the deploy.
Say “publish this” in Claude, Cursor or VS Code and get a link. No hosting account, no config.
Connect your AI
Have files?
Put anything online, anytime.
Choose a folder and share its link. It stays where it is.
Add a folder
Runs quietly. Share instantly.
It lives in your menu bar.
Seamside runs quietly in the background. What you share stays online while your computer is on.
Sharing is one link.
Send it to anyone, or only to people you invite. They open it in any browser, with nothing to sign up for.
What people keep on Seamside.
Families, friends, classes and small businesses, each with a space of their own.
Your family’s budgetRJMT4 people
September$2,778 of $3,200
Your homework trackerA1 person
Due this week3 of 5
Stats problem setLab reportEssay draft
Your group projectMTAN4 people
Write-up draft2 editing
MayaTheo
Your band’s spaceJKSR4 people
Harbour (mix 3)3:42
Your tabletop campaignWOTBD5 people
Wren · rangerLevel 5
171d20 + 421 · hits
Your food truckLCRAnyone
Build your own£6.60
Three scoops£5.20+Honeycomb£0.60+Brownie chunk£0.80+
Your workshopHM2 people
Stock running low3 to reorder
White oakHardwax oilBlack walnut
What’s yours for?
At homeFor a classWith a groupSomething you madeA small businessJust for you
Find an idea →
September$2,778 of $3,200
Your homework trackerA1 person
Due this week3 of 5
Stats problem setLab reportEssay draft
Your group projectMTAN4 people
Write-up draft2 editing
MayaTheo
Your band’s spaceJKSR4 people
Harbour (mix 3)3:42
Your tabletop campaignWOTBD5 people
Wren · rangerLevel 5
171d20 + 421 · hits
Your food truckLCRAnyone
Build your own£6.60
Three scoops£5.20+Honeycomb£0.60+Brownie chunk£0.80+
Your workshopHM2 people
Stock running low3 to reorder
White oakHardwax oilBlack walnut
What’s yours for?
At homeFor a classWith a groupSomething you madeA small businessJust for you
Find an idea →We don’t host any of it.
Sharing used to mean handing someone something. Seamside works that way again: your copy, their copy, and nobody else’s.
Sharing today
- Upload it to someone’s servers
- Pay per app, every month
- Ads, tracking and algorithms
- Sign-ups, plans and settings
- Gone when you stop paying
With Seamside
- It stays on your computer
- Free, because you run it
- No ads, no tracking, no algorithms, no data mining
- Nothing to set up on your network
- Yours as long as you keep the folder
Share what’s yours.
Free on Mac, Windows and Linux. No sign-up. Read the Field Guide first if you like.