Elastic Agent vs syslog-ng

Elastic Agent collects logs, metrics, traces, availability, security, and other host data through one agent. Fleet supplies a web interface for centrally adding and managing agents and integrations, and can distribute upgrades and policies across thousands of agents at runtime. Administrators can track agent status, configuration, overhead, processes, and versions. Elastic Agent and Fleet include dashboards, visualizations, and ingest pipelines for popular services and platforms, with more than 300 ready-to-use integrations listed across search, security, observability, and cloud providers. Packages are provided for Linux, Windows, and macOS architectures and include a separate otelcol binary for OpenTelemetry Collector components. Elastic describes use across infrastructure, applications, and mobile-device telemetry. Elastic Cloud offers a free 14-day trial with one hosted deployment and three Serverless projects. Trial hosted deployments are limited to one active deployment, 4 GB RAM per availability zone for Elasticsearch data nodes, and up to two availability zones. Elastic directs users to documentation and its community forum for assistance. Paid tiers listed are Standard at $99 a month, Gold at $114 a month, Platinum at $131 a month, and Enterprise at $184 a month.

syslog-ng collects infrastructure logs, processes them, and routes or stores them for analysis. Its free Open Source Edition can collect, parse, classify, rewrite, and correlate logs before sending them to analysis tools or storing them. Premium Edition adds filtering and real-time pattern correlation to reduce and normalize log data, plus disk buffering, client-side failover, and application-layer acknowledgements. It supports TLS-encrypted transfer and encrypted log storage with X.509 certificates for mutual authentication. Store Box offers access-controlled search and custom reports that can help with compliance work. Listed destinations include Elasticsearch, Hadoop, Kafka, MongoDB, SQL databases, Redis, Splunk, and SIEM tools. Premium licensing is based on Log Source Hosts, with annual support available; Store Box licensing depends on Log Source Hosts and hardware configuration. Open Source Edition is GPL/LGPL licensed and community supported. Commercial customers can access certified engineers and support services; Premium Edition and Store Box offer free trials.