Open-source tools by HASH
Tools
HASH publishes a range of open-source tools — from user-facing applications and public registries, through to the npm packages and Rust crates you can drop into your own projects.
All source lives in the HASH monorepo on GitHub.
Applications
User-facing products and hosted apps, each with its own dedicated site.
A self-building graph that automatically captures and structures your world as context, with full provenance, supporting causal inference, reasoning, analysis and simulation.
hash.ai
brunchSpecify intentions clearly and completely — built to help engineers brief AI coding agents (and humans) without ambiguity.
brunch.ai
A visual editor for Petri nets, with progressive support for Stochastic Dynamic Coloured Petri Nets (SDCPN).
petrinaut.orgRegistries
Public, web-first registries and open standards that anyone can build on.
A public user interface component registry and open standard — discover, publish, and compose interoperable 'blocks' across tools.
blockprotocol.org
A public type registry — decentralized, composable semantic types that let anybody define anything they care about, in their own terms, in a cross-compatabile way.
semtype.orgLibraries
Embeddable components, npm packages, and Rust crates you can drop into your own applications.
A context-aware error-handling crate for Rust that supports arbitrary attached user data.
Read moreA higher-order React component for refractive glass effects — SVG filters paired with `backdrop-filter`.
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Entity EditorThe React-based UI used inside HASH for viewing and editing entities typed against the SemType registry.
Read moreType EditorA React component, published as @hashintel/type-editor, for authoring entity types compatible with SemType.
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