Stone.js is a framework that treats application code as existing in superposition across every possible runtime until it is observed at execution time. Developers write domain logic once; the framework collapses it into the appropriate implementation for server, edge, browser, agents, or other contexts. It draws from quantum principles (superposition, observation, collapse) to provide a unified programming model. Currently in public beta, it aims to eliminate the fragmentation of writing platform-specific code.
Stone.js is a Frameworks & SDKs project. It focuses on writing and maintaining the same business logic separately for every target runtime (server, browser, edge, agents). It is built as an open-source project for developers. Stone.js is open source under the MIT license. It runs on the web and the command line, and it can be self-hosted.
Stone.js first shipped in 2026. The project is developed in the open on GitHub with 58 commits in the last 90 days. Among its 4 catalogued features are multi-runtime, superposition model, and runtime collapse. It exposes integrations via an MCP server. Stone.js is currently in beta.
Summary written by a language model from the project’s public pages.
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