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NuGet · #2538 most downloaded on NuGet
A 100% native C# port of the lightweight high performance messaging library ZeroMQ
Last release today
07 Oct 2026
Ships unpredictably
gaps range from 1 weeks to 1.7 years
Rarely documented
notes for 8 of 57 stable releases
15 versions withdrawn
withdrawn after publishing
127 years old
80 releases · first in 1900
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One column per quarter.
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Handle SocketException while configuring an accepted socket in TcpListener by @follesoe in #1165
Full Changelog: 4.0.4.3...4.0.4.4
Handle macOS EINVAL when enabling TCP_NODELAY on outbound TCP sockets by @drewnoakes with @Copilot in #1161
EINVAL when enabling TCP_NODELAY on outbound TCP sockets by @drewnoakes with @Copilot in #1161Full Changelog: 4.0.4.2...4.0.4.3
Guard StreamEngine handshake against null peer identity when RecvIdentity is enabled by @Copilot in #1160
Full Changelog: 4.0.4.1...4.0.4.2
Fix XPub manual mode: Send between Receive and Subscribe clears m_lastPipe by @Copilot in #1153
Bug fixes
Infra and testing
Full Changelog: 4.0.4.0...4.0.4.1
Add INetMQMonitor interface to enable mocking in tests by @Copilot in #1138
Full Changelog: 4.0.2.1...4.0.2.2
Review conditional code by @drewnoakes in #1129
IAsyncEnumerable for .NET Framework by @chrbauer in #1131net8.0 only) by @chrbauer in #1132Full Changelog: 4.0.2.0...4.0.2.1
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Add Support for Disconnect Message by @chrbauer in #1126
Use a stable hash function for computing IPC port by @drewnoakes in #1122
Full Changelog: 4.0.1.14...4.0.1.15
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