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OpenTelemetry Collectorcollectd
Free

Free and open source. Hosting, hardware and any external services are separate.

 Free

Free and open source.

Linux, Windows, macOS, Command line Linux, Self-hosted
  • Connects supported receivers and exporters
  • Processes traces, metrics and logs
  • Small and fast, written in C
  • Runs on embedded systems
  • It forwards and processes telemetry rather than providing a complete storage dashboard.
  • Collects data only; graphs need another tool
  • Stable 5.x branch is old while 6.0 is still a release candidate
Downloadable app Self-hosted
Open source Open source
License: Apache-2.0 License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.