rsyslog
Spray UDP packets to a remote syslog
syslog-streams2
Streams2 implementation that inputs plain strings, bunyan records, glossy records, and outputs syslog formatted strings
@awesomeorganization/syslog
[ESM] The syslog protocol (rfc5424) client. Works with Node.js over udp (rfc5426), tcp (rfc6587) and tls (rfc5425)