Package

primus

Primus is a simple abstraction around real-time frameworks. It allows you to easily switch between different frameworks without any code changes.

v8.0.9, 6 Nov 2023MITCommonJSTypes: NoneWebSockets and realtime

$ npm install primus

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 65.6k; +441% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 10; Direct, from package.json
Last release: 2 years ago; v8.0.9
GitHub stars: 4.5k; 270 forks
Open issues / PRs: 50 / 0
Contributors: -
Commits, last 52 weeks: 0

Downloads

Last week 2026-09-15 to 2026-09-21

Weekly npm downloads, one point per week, weeks starting 23 Sept 2025 to 15 Sept 2026. The y axis starts at zero.

65,626 downloads last week, 316,654 in the last month. The 12-month change of +441% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: -
Latest version: 8.0.9, 6 Nov 20232 years ago
First published: -
Last push to GitHub: 6 Nov 20231,053 days before the snapshot
Repository archived: No
Open issues: 50
Open pull requests: 0
Commits, last 52 weeks: 0
Dependents on npm: 137

Major versions

Recent releases

Compatibility

Module format: CommonJSFrom package.json type, main and exports fields
TypeScript types: None
Node.js engine range: Not declared
Runtimes: -
Unpacked size (npm): 496 kB
Dependencies (10): fusingnanoidultronasyncemitsetheaderdiagnosticscreate-servereventemitter3forwarded-foraccess-control

Install

npm install primus

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/primus@8.0.9/
unpkghttps://unpkg.com/primus@8.0.9/
esm.shhttps://esm.sh/primus@8.0.9

Alternatives

Package	Weekly downloads	Gzip	Last release	Module	Comparison
socket.io node.js realtime framework server	13.7m	-	9 months ago	ESM + CommonJS	-
centrifuge JavaScript client SDK for bidirectional communication with Centrifugo and Centrifuge-based server from browser, NodeJS and React Native	798.4k	-	15 days ago	ESM + CommonJS	-
ws Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js	201.6m	-	1 month ago	ESM + CommonJS	-
socket.io-client Realtime application framework client	11.1m	-	9 months ago	ESM + CommonJS	-
websocket-as-promised A WebSocket client library providing Promise-based API for connecting, disconnecting and messaging with server	18.3k	-	1 year ago	CommonJS	-
sockjs SockJS-node is a server counterpart of SockJS-client a JavaScript library that provides a WebSocket-like object in the browser. SockJS gives you a coherent, cross-browser, Javascript API which creates a low latency, full duplex, cross-domain communication	13.9m	-	4 years ago	CommonJS	-
sockjs-client SockJS-client is a browser JavaScript library that provides a WebSocket-like object.	4.2m	-	4 years ago	CommonJS	-
@feathersjs/feathers A framework for real-time applications and REST API with JavaScript and TypeScript	118.3k	-	13 days ago	CommonJS	-

Sources: npm registry, npm downloads API, GitHub API. Data fetched 25 Sept 2026.

Indexability: Indexed.