Package

express-sse

An Express middleware for Server-Sent Events (EventSource)

v1.0.0, 17 Apr 2025MITESM + CommonJSTypes: BundledHTTP servers and web frameworks WebSockets and realtime

$ npm install express-sse

npm GitHub Homepage

Key numbers

As of 25 Sept 2026

Weekly downloads: 3.9k; -48% over 12 months
Gzip bundle size: -; No Bundlephobia data
Dependencies: 0; Direct, from package.json
Last release: 1 year ago; v1.0.0
GitHub stars: 126; 27 forks
Open issues / PRs: 5 / 7
Contributors: -
Commits, last 52 weeks: 2

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.

3,919 downloads last week, 19,948 in the last month. The 12-month change of -48% compares the average of the last 4 weeks with the first 4 weeks of the series.

Maintenance

Releases, last 12 months: -
Latest version: 1.0.0, 17 Apr 20251 year ago
First published: -
Last push to GitHub: 25 Mar 2026183 days before the snapshot
Repository archived: No
Open issues: 5
Open pull requests: 7
Commits, last 52 weeks: 2
Dependents on npm: 36

Major versions

Recent releases

Compatibility

Module format: ESM + CommonJSFrom package.json type, main and exports fields
TypeScript types: Bundled
Node.js engine range: >=16.0.0
Runtimes: -
Unpacked size (npm): 12 kB
Dependencies (0): None

Install

npm install express-sse

CDN

jsDelivrhttps://cdn.jsdelivr.net/npm/express-sse@1.0.0/
unpkghttps://unpkg.com/express-sse@1.0.0/
esm.shhttps://esm.sh/express-sse@1.0.0

Alternatives

Package	Weekly downloads	Gzip	Last release	Module	Comparison
http-proxy-middleware The one-liner node.js proxy middleware for connect, express, next.js and more	21.4m	-	2 months ago	ESM only	-
@standard-server/fastify Fastify adapter for Standard Server: transport-agnostic requests, responses, and streaming on top of Fastify's request and reply objects	34.2k	-	5 days ago	ESM only	-
next-http-proxy-middleware Nextjs HTTP Proxy Middleware	29.9k	-	5 months ago	CommonJS	-
express-socket.io-session Share a cookie-based express-session middleware with socket.io	6.8k	-	8 years ago	CommonJS	-
serve-favicon favicon serving middleware with caching	2m	-	1 year ago	-	-
ultimate-express The Ultimate Express. Fastest http server with full Express compatibility, based on uWebSockets.	6.3k	-	1 month ago	CommonJS	-
cookie-session cookie session middleware	308.2k	-	1 year ago	-	-
express-xml-bodyparser Simple XML body parser connect/express middleware	70k	-	1 year ago	CommonJS	-

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

Indexability: Not indexed (discovery only): downloads_week 3919 < 10000.