Web Sockets

- LS

IE

  1. 8
  2. 9
  3. 10
  4. 11

Edge

  1. 13
  2. 14
  3. 15
  4. 16

Firefox

  1. 53
  2. 54
  3. 55
  4. 56
  5. 57
  6. 58
  7. 59

Chrome

  1. 59
  2. 60
  3. 61
  4. 62
  5. 63
  6. 64
  7. 65

Safari

  1. 9.1
  2. 10
  3. 10.1
  4. 11
  5. TP

Opera

  1. 45
  2. 46
  3. 47
  4. 48
  5. 49
  6. 50

iOS Safari

  1. 9.3
  2. 10.0-10.2
  3. 10.3
  4. 11

Opera Mini

  1. all

Android Browser

  1. 4.2-4.3
  2. 4.4
  3. 4.4.3-4.4.4
  4. 56

Blackberry Browser

  1. 7
  2. 10

Opera Mobile

  1. 11.5
  2. 12
  3. 12.1
  4. 37

Chrome for Android

  1. 61

Firefox for Android

  1. 56

IE Mobile

  1. 10
  2. 11

UC Browser for Android

  1. 11.4

Samsung Internet

  1. 4
  2. 5

QQ Browser

  1. 1.2

Baidu Browser

  1. 7.12

Reported to be supported in some Android 4.x browsers, including Sony Xperia S, Sony TX and HTC.