DetectRTC

<script src="https://www.webrtc-experiment.com/DetectRTC.js"></script>
<script>
// OR otherwise use[NPM](https://www.npmjs.com/package/detectrtc)var DetectRTC = require('detectrtc');
</script>

DetectRTC.load(function() {
    DetectRTC.hasWebcam (has webcam device!)
    DetectRTC.hasMicrophone (has microphone device!)
    DetectRTC.hasSpeakers (has speakers!)
    DetectRTC.isScreenCapturingSupported
    DetectRTC.isSctpDataChannelsSupported
    DetectRTC.isRtpDataChannelsSupported
    DetectRTC.isAudioContextSupported
    DetectRTC.isWebRTCSupported
    DetectRTC.isDesktopCapturingSupported
    DetectRTC.isMobileDevice

    DetectRTC.isWebSocketsSupported
    DetectRTC.isWebSocketsBlocked
    DetectRTC.checkWebSocketsSupport(callback)

    DetectRTC.isWebsiteHasWebcamPermissions // getUserMedia allowed for HTTPs domain in Chrome?
    DetectRTC.isWebsiteHasMicrophonePermissions // getUserMedia allowed for HTTPs domain in Chrome?

    DetectRTC.audioInputDevices // microphones
    DetectRTC.audioOutputDevices // speakers
    DetectRTC.videoInputDevices // cameras

    DetectRTC.osName
    DetectRTC.osVersion

    DetectRTC.browser.name === 'Edge' || 'Chrome' || 'Firefox'
    DetectRTC.browser.version
    DetectRTC.browser.isChrome
    DetectRTC.browser.isFirefox
    DetectRTC.browser.isOpera
    DetectRTC.browser.isIE
    DetectRTC.browser.isSafari
    DetectRTC.browser.isEdge

    DetectRTC.browser.isPrivateBrowsing // incognito or private modes

    DetectRTC.isCanvasSupportsStreamCapturing
    DetectRTC.isVideoSupportsStreamCapturing

    DetectRTC.DetectLocalIPAddress(callback)
});