No. 11 of 33 ·Metrics Monitoring Tools

collectd

Windows · Linux · Self-hosted

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

collectd is ranked #11 of 33 in metrics monitoring tools on Freedom251. It runs on Linux, Self-hosted, Windows. There is a free plan.

collectd plans and pricing

All plans

collectd Free System and application metrics collection; stores metrics or makes them available over the network collectd.org · 4 Oct 2026

Compared on metrics monitoring tools

Custom metrics: Yes
Data ingestion: multiple
Self-hosted option: Yes

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The record

Purpose: collectd is a daemon that periodically collects system and application performance metrics and provides mechanisms to store them in various ways.
Metric sources: It gathers metrics from operating systems, applications, logfiles, and external devices.
Uses: Collected statistics can be used to monitor systems, find performance bottlenecks, and predict future system load.
Performance and portability: The project says collectd is written in C for performance and portability, including use on systems without a scripting language or cron daemon.
Plugins: The homepage says the daemon comes with over 100 plugins.
Scale: The homepage says collectd includes optimizations and features to handle hundreds of thousands of metrics.
Storage and graphs: collectd can write to RRD files but does not generate graphs from them.
Monitoring limit: The homepage says its monitoring functionality is limited to simple threshold checking.
Download formats: The download page offers source packages as GZip or BZip2 compressed tar archives.
Platforms: The download page lists packages or ports for Debian and Ubuntu, Fedora, openSUSE and SLES, Red Hat and CentOS, FreeBSD, Solaris, OpenWrt, and T2 SDE.
Windows: The download page points to SSC Serv, a native Windows application that collects and dispatches performance data using the collectd network protocol.
Support: The project directs bug reports to its bug tracker and uses its mailing list for announcements and development discussions.
Security contact: The contact page provides [email protected] and GnuPG key 0x0C705A15 for reporting sensitive security issues.
Documentation: The project provides manpages, a getting started guide, specialized documentation, and a plugin list in its source README.
Price from: Free

Where it ranks on Freedom251

Best Metrics Monitoring Tools in 2026#11 of 33

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Sources

collectd.org· checked 4 Oct 2026
collectd.org/download.html· checked 4 Oct 2026
collectd.org/contact.html· checked 4 Oct 2026
collectd.org/documentation/· checked 4 Oct 2026