syslog-ng is an enhanced log daemon, supporting a wide range of input and output methods: syslog, unstructured text, queueing, SQL & NoSQL.

High-performance log ingestion and ETL engine

a fast and feature-rich logging library for C

Terminal I/O logger

AxoSyslog - the scalable security data processor

BSD syslog daemon with syslog()/syslogp(), i.e., structured logging API replacement for Linux, RFC3164 + RFC5424

Forwards messages from the journal to other hosts over the network using syslog format RFC 5424 and RFC 3164

Kernel-based Process Monitoring on Linux Endpoints for File System, TCP and UDP Networking Events and optionally DNS, HTTP and SYSLOG Application Messages via eBPF Subsystem

Alertik: A tiny syslog server & event notifier for MikroTik routers

📱 An iOS system log tailer that doesn't suck. Improved

The most portable, extensible, and configurable C logging library. Thread-safe, native syslog/os_log/EventLog, custom plugins. C17 core w/ C++20 wrapper, bindings. Adapters for fmt, std::format, std::iostream, and boost::format.

elos -- event logging and management with normalized output-format for Linux

Logging library for C applications

The red management plane daemon.

Small utility to watch log files and ship to syslog service.

Listen on syslog port/socket and relay messages to stdout for Docker log to consume

Lightweight and fast SOCKS5 proxy server

Tiny syslogd and klogd implementation plus some utilities

Scripts / Programs to deploy a Syslog Server with TUI and GUI

Preloadable library to redirect syslog(3) output to stderr