Level/level

Health v2 · maintenance only

Adoption not part of the score

1673 stars · 111 forks observed · 2026-10-20

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

Level is a universal JavaScript key-value database library built on the abstract-level interface, exporting classic-level in Node.js and browser-level in browsers. It provides lexicographically sorted embedded storage with put/get/batch operations, iterators, sublevels, and TypeScript support.

Use cases

• embed a sorted key-value store in a Node.js app
• store data locally in the browser with IndexedDB-backed storage
• persist JSON documents with typed keys and values
• iterate over ranges of keys in sorted order
• use the same database API across Node.js, Electron, and browsers
• create namespaced sublevel databases within one store

When to choose

• you need an embedded, dependency-free key-value store in JavaScript
• you want one API that works in Node.js and browsers
• you need lexicographically sorted keys and range iterators
• you're building an Electron app needing local persistence

When to avoid

• you need a client-server or networked database
• you need SQL, joins, or relational queries
• you need multi-process write concurrency at scale
• you need a distributed or replicated datastore

Facets

library · maturity stable

database database-driver databases developer-tools web-development browser cross-platform key-value-store leveldb embedded-database abstract-level storage-engine nodejs electron

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For agents

markdown · JSON · MCP: product_card(name="Level/level")