YCF25· AI· DevtoolsCoasts
Localhost service isolation and orchestration for git worktrees
Founders
- Jamie SunderlandFounder/CEO
- Dan HymanFounder/CTO
Same space
Adjacent
Overlapping tags, a different niche.
DesignbaseW23Design and build great interfacesShared: developer tools, design, web developmentActive
RepaintS23Build a website by chatting with AIShared: design, web developmentActive
VibeS24Making everyone a software engineerShared: developer tools, web developmentActive
PierreW23Pierre is a new, opinionated, git platform.Shared: developer tools, productivityActive
TriplitW21The best database for app developersShared: developer tools, web developmentInactive
Also from F25 in AI
Batchmates in Fall 2025.
RadiusF25Code and browse in the same placeActive
CompyleF25The coding agent that actually collaborates with youActive
CrunchedF25Excel AI analyst for Power UsersActive
dari.devF25The Routing Layer for AI AgentsActive
FastshotF25Lovable for mobile appsActive
Kestrel AIF25AI Agents for Platform EngineeringActive
About Coasts
A Coast (containerized host) is a local development runtime. Coasts let you run multiple isolated environments for the same project on one machine. As AI coding agents increasingly work in parallel across git worktrees, developers hit painful conflicts — clashing ports, duplicated databases, and fragile per-branch setup. Coasts solve this by giving each worktree its own fully isolated runtime, so multiple agents can build and test side by side without stepping on each other.
Coasts: questions
Which YC batch was Coasts in?
Coasts was in Y Combinator's Fall 2025 batch (F25).
Is Coasts still active?
Y Combinator lists Coasts as inactive.
Who founded Coasts?
Coasts's founders, as listed on its YC page: Jamie Sunderland (Founder/CEO), Dan Hyman (Founder/CTO).
Not affiliated with Y Combinator. From YC's public directory. Logos via logo.dev; trademarks belong to their owners.