engine.io
The realtime engine behind Socket.IO. Provides the foundation of a bidirectional connection between client and server
6.6.9
66M downloads/mo
#2250 most downloaded on npm
socketio/socket.io
What this package is like to depend on
Last release 2 months ago
16 Jun 2026
Release timing varies
gaps range from 3 weeks to 11 months
No release notes found
nothing matched a version
Nothing withdrawn
no release was ever pulled
14 years old
159 releases · first in 2012
5 releases in the last 12 months
see the full history below
Release timeline
159 releases · Jul 2012 to Jun 2026Releases
latest 60 of 159-
6.6.916 Jun 2026Nothing published for this version
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6.6.820 May 2026Nothing published for this version
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6.6.727 Apr 2026Nothing published for this version
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6.6.610 Mar 2026Nothing published for this version
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6.6.522 Dec 2025Nothing published for this version
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6.6.428 Jan 2025Nothing published for this version
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6.6.323 Jan 2025Nothing published for this version
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6.6.209 Oct 2024Nothing published for this version
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6.6.121 Sep 2024Nothing published for this version
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6.6.021 Jun 2024Nothing published for this version
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6.5.518 Jun 2024Nothing published for this version
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6.5.409 Nov 2023Nothing published for this version
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6.5.306 Oct 2023Nothing published for this version
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6.5.202 Aug 2023Nothing published for this version
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6.5.2-alpha.101 Aug 2023 pre-releaseNothing published for this version
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6.5.127 Jun 2023Nothing published for this version
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6.5.016 Jun 2023Nothing published for this version
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6.5.0-alpha.111 Jun 2023 pre-releaseNothing published for this version
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6.4.201 May 2023Nothing published for this version
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6.4.119 Feb 2023Nothing published for this version
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6.4.006 Feb 2023Nothing published for this version
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6.3.112 Jan 2023Nothing published for this version
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6.3.010 Jan 2023Nothing published for this version
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6.2.120 Nov 2022Nothing published for this version
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6.2.017 Apr 2022Nothing published for this version
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6.2.0-alpha.112 Mar 2022 pre-releaseNothing published for this version
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6.1.323 Feb 2022Nothing published for this version
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6.1.218 Jan 2022Nothing published for this version
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6.1.111 Jan 2022Nothing published for this version
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6.1.008 Nov 2021Nothing published for this version
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6.0.106 Nov 2021Nothing published for this version
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6.0.008 Oct 2021Nothing published for this version
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5.2.111 Jan 2022Nothing published for this version
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5.2.029 Aug 2021Nothing published for this version
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5.1.116 May 2021Nothing published for this version
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5.1.004 May 2021Nothing published for this version
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5.0.010 Mar 2021Nothing published for this version
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4.1.211 Jan 2022Nothing published for this version
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4.1.102 Feb 2021Nothing published for this version
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4.1.014 Jan 2021Nothing published for this version
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4.0.604 Jan 2021Nothing published for this version
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4.0.507 Dec 2020Nothing published for this version
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4.0.417 Nov 2020Nothing published for this version
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4.0.317 Nov 2020Nothing published for this version
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4.0.209 Nov 2020Nothing published for this version
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4.0.121 Oct 2020Nothing published for this version
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4.0.010 Sep 2020Nothing published for this version
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4.0.0-alpha.112 Feb 2020 pre-releaseNothing published for this version
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4.0.0-alpha.012 Feb 2020 pre-releaseNothing published for this version
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3.6.218 Jun 2024Nothing published for this version
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3.6.120 Nov 2022Nothing published for this version
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3.6.006 Jun 2022Nothing published for this version
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3.5.030 Dec 2020Nothing published for this version
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3.4.204 Jun 2020Nothing published for this version
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3.4.117 Apr 2020Nothing published for this version
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3.4.013 Sep 2019Nothing published for this version
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3.3.229 Nov 2018Nothing published for this version
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3.3.119 Nov 2018Nothing published for this version
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3.3.007 Nov 2018Nothing published for this version
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3.2.102 Nov 2018Nothing published for this version