9 best JavaScript Key Value Database libraries in 2025
by marketing.admin@openweaver.com 
Updated: Feb 13, 2023
Guide Kit
The use of JavaScript Key Value Database libraries like realmjs, immortalDB, jstorage and others has become a trend. Developers are using these libraries to store data in their applications. The main advantage of using these libraries is that they are easy to implement, support offline storage and can be used with any web framework. RealmJS is an open source mobile database built to run directly inside phones, tablets or wearables. It runs directly inside phones, tablets or wearables, and its small footprint makes it ideal for low-end or resource-constrained devices. ImmortalDB is an ultra-fast, small and powerful database with schema-free support. JStorage is a lightweight storage framework for nodejs. Full list of the best open source JavaScript Key Value Database libraries are below
realm-jsby realm
5276 Version:v11.10.0Realm is a mobile database: an alternative to SQLite & key-value stores
realm-jsby realm
TypeScript 5276 Version:v11.10.0 License: Permissive (Apache-2.0)
ImmortalDBby gruns
3028 Version:v1.1.0:nut_and_bolt: A relentless key-value store for the browser.
ImmortalDBby gruns
JavaScript 3028 Version:v1.1.0 License: Permissive (MIT)
jStorageby andris9
1541 Version:CurrentjStorage is a simple key/value database to store data on browser side
jStorageby andris9
JavaScript 1541 Version:Current License: Permissive (Unlicense)
nstoreby creationix
398 Version:CurrentnStore is a simple, in-process key/value database for node.js
nstoreby creationix
JavaScript 398 Version:Current License: Permissive (MIT)
simpleStorageby ZaDarkSide
304 Version:CurrentCross-browser key-value store database to store data locally in the browser. Simpler fork of jStorage
simpleStorageby ZaDarkSide
JavaScript 304 Version:Current License: Permissive (Unlicense)
thunderclapby anywhichway
266 Version:CurrentA key-value, indexed JSON, and graph database plus function oriented server designed for Cloudflare
thunderclapby anywhichway
JavaScript 266 Version:Current License: Others (Non-SPDX)
ueberDBby ether
251 Version:CurrentAbstract your databases, make datababies. Transforms every database into a object key value store.
ueberDBby ether
JavaScript 251 Version:Current License: Permissive (Apache-2.0)
rollbackdbby mafintosh
40 Version:CurrentA simple key/value database with fast rollback support.
rollbackdbby mafintosh
JavaScript 40 Version:Current License: Permissive (MIT)
abstract-levelby Level
7 Version:v1.0.3Abstract class for a lexicographically sorted key-value database.
abstract-levelby Level
JavaScript 7 Version:v1.0.3 License: Permissive (MIT)