EeldenMulti-tenant by default

A clean-room local database engine and pipe-based query language — tenants as first-class primitives, types at edit time, storage that stays out of the way.

Quickstart

Open playground

What works today

Tenant = consistency boundary

ACID stays inside a tenant. Forks, snapshots, and residency are engine operations. Cross-tenant work is CDC and sagas — never a distributed transaction pretending to be local.

Eelden Lang

Pipe-based, LSP-first queries. Schemas are code. Money is never a float. Named .eel files plus codegen for apps.

Local-first engine

The laptop directory is the engine of record — pages, WAL, and Meta. Browser wasm and OPFS share the same executor traits.

Studio

Browse collections, run pipelines, shape-at-cursor completions, live CDC, health — the engine's first real client.