OUSIA / OY-SEE-AH / GREEK: "ESSENCE, BEING, SUBSTANCE"

We build systems
that give data
structure, meaning,
and executable form.


01 — RUNTIME

shimmy

A blazing-fast CLI that reads your project's env-manifest.toml, downloads the exact runtimes you need into an isolated cache, and shims them into your shell.

node, python, go, java,
rustc, bun — resolved on cd.
// no containers. no globals. no conflicts.
02 — ONTOLOGY

stratum

Maps your existing data — Postgres, MySQL, REST, CSV — into user-defined object types. What real-world things does your data represent, and how are they connected?

REST · GraphQL · SPARQL
full-text · semantic · NL
// new query surfaces, same data.

WHAT IS OUSIA

Software has spent thirty years solving for code. The next thirty are about everything code touches — environments, data, meaning. Ousia builds the missing layer.


PRINCIPLES
  1. 01. Open by default

    Apache 2.0. Build in public. No "open core" gotchas.

  2. 02. Fast or it doesn't ship

    Performance is a feature. Cold starts measured in ms.

  3. 03. Boring where it matters

    Standard formats. Predictable interfaces. No magic.

ousia/shimmy ★ 4.2k · 142 contributors
ousia/stratum ★ 2.8k · 89 contributors