Vector by Datadog is described as 'Vector is a high-performance observability data platform that puts organizations in control of their observability data. Collect, transform, and route all your logs, metrics, and traces to any vendors you want' and is an app in the network & admin category. There are five alternatives to Vector by Datadog for a variety of platforms, including Linux, Mac, Windows, BSD and Self-Hosted apps. The best Vector by Datadog alternative is Prometheus, which is both free and Open Source. Other great apps like Vector by Datadog are Logstash, Fluentd, Grafana Alloy and Telegraf.
Prometheus is an open-source systems monitoring and alerting toolkit originally built at SoundCloud. Since its inception in 2012, many companies and organizations have adopted Prometheus, and the project has a very active developer and user community.
Logstash is an open source, server-side data processing pipeline that ingests data from a multitude of sources simultaneously, transforms it, and then sends it to your favorite "stash.".
Fluentd is a fully free and open-source log management tool that simplifies your data collection and storage pipeline. It eliminates the need to maintain a set of ad-hoc scripts.
Grafana Alloy is Grafana Labs’ distribution of the OpenTelemetry Collector. It is an OTLP-compatible collector with built-in Prometheus optimizations that also supports signals across metrics, logs, traces, and profiles.
Telegraf is a metric collection daemon that can collect metrics from a wide array of inputs and write them into a wide array of outputs. It is plugin-driven for both collection and output of data so it is easily extendable.
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Prometheus is a collector and time series metrics database, while vector does not store data as its main feature.