PeerJS vs WebRTC Experiments
Which should you use? A side-by-side look at what each one does, who it suits, what it costs, how hard it is to set up, and where each falls short.
Open source · MIT
A JavaScript library that lets browsers connect directly to each other for data and video/audio calls.
Open source · MIT
A collection of small, mostly independent WebRTC demos and JavaScript libraries by one author.
The short answer
Choose PeerJS if you need…
- Web developers adding real-time chat or file-style data exchange between browsers
- Developers building simple video or audio call features in a web app
- Teams who want a TypeScript-based WebRTC wrapper with a small API
- Prototypes that connect two browsers without building their own signaling layer
Choose WebRTC Experiments if you need…
- Developers who want a working example of a specific WebRTC feature, such as screen recording or file sharing
- Developers looking for small JavaScript helpers to detect devices or read connection stats
- Students studying how WebRTC signaling and peer connections are structured
Side-by-side
| PeerJS | WebRTC Experiments | |
|---|---|---|
| Type | Library | Curated list |
| Price | Free and open source | Free and open source |
| Licence | MIT | MIT |
| GitHub stars | 13.5k | 12.1k |
| Setup difficulty | Intermediate | Intermediate |
| How you get it | Install with a package manager | See the README |
| Main language | TypeScript | JavaScript |
| Last code update | 8 months ago | 4 years ago |
What each one is
PeerJS
PeerJS is a JavaScript library that wraps WebRTC, the browser technology for direct connections between users, in a simpler API. It lets web apps send data or start audio and video calls between peers identified by IDs. The README says it needs a PeerServer to help peers find each other, which is a separate project.
WebRTC Experiments
This is a repository of many separate browser-based WebRTC projects, such as RecordRTC for recording audio, video and screen, DetectRTC for checking device support, and RTCMultiConnection for peer-to-peer apps. WebRTC is the browser technology that lets people send audio, video and data directly to each other. Each project has its own demo page and can be used on its own.
Best for
PeerJS
- Web developers adding real-time chat or file-style data exchange between browsers
- Developers building simple video or audio call features in a web app
- Teams who want a TypeScript-based WebRTC wrapper with a small API
- Prototypes that connect two browsers without building their own signaling layer
WebRTC Experiments
- Developers who want a working example of a specific WebRTC feature, such as screen recording or file sharing
- Developers looking for small JavaScript helpers to detect devices or read connection stats
- Students studying how WebRTC signaling and peer connections are structured
Strengths
PeerJS
- Small, focused API: create a peer, connect, send data, or call
- Tested against current Chrome, Edge, Firefox, and Safari versions per the README
- MIT licensed with a documentation site and changelog
WebRTC Experiments
- Covers many separate WebRTC features in one place, each with a live demo
- Released under the MIT license, which permits reuse
- Several components are published on npm
Not ideal for
PeerJS
- People who need a finished app with no coding, since this is a library for developers
- Projects needing guaranteed connections across all networks, because the README does not describe NAT traversal or relay fallback
- Users needing support for very old browsers, since the README says only listed versions are officially supported
WebRTC Experiments
- Anyone wanting a single, actively maintained product; the README shows no releases and the last push was in June 2022
- Teams needing a supported production library with clear versioning, since the README gives no release or support policy
Trade-offs
PeerJS
- Requires a PeerServer for peers to find each other; the README points to a separate project for it
- The README notes a Parcel-related console warning when used with Webpack, described as non-critical
- Browser support is limited to listed versions; others are unsupported
WebRTC Experiments
- The README gives no release history and the repository has no latest release
- Last code push was June 2022, so compatibility with current browsers is unclear
- The README is a list of links with little setup detail for each project
Getting started
PeerJS
Install with npm
npm install peerjsInstall with yarn
yarn add peerjsWebRTC Experiments
Clone the repository
git clone https://github.com/muaz-khan/WebRTC-ExperimentFrequently asked questions
What is the difference between PeerJS and WebRTC Experiments?
PeerJS: A JavaScript library that lets browsers connect directly to each other for data and video/audio calls. WebRTC Experiments: A collection of small, mostly independent WebRTC demos and JavaScript libraries by one author. PeerJS suits web developers adding real-time chat or file-style data exchange between browsers, while WebRTC Experiments suits developers who want a working example of a specific webrtc feature, such as screen recording or file sharing.
Are PeerJS and WebRTC Experiments free?
PeerJS: Free and open source. WebRTC Experiments: Free and open source.
Is PeerJS or WebRTC Experiments more popular?
PeerJS has more GitHub stars (13.5k) than WebRTC Experiments (12.1k). Popularity isn't the same as fit — check which one matches your use case above.
What are other alternatives to PeerJS and WebRTC Experiments?
Other options people compare them with include Socket.IO, WebTorrent, Simplefolio.
Keep comparing
Built from our catalogue entries for both products: open-source details come from each project's README (AI-assisted, refreshed weekly) and GitHub data; AI-tool details are editorial. Spotted something wrong? Let us know from either product's page.