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Networking · head to head

LibreNMS vs Semgrep

LibreNMS logo

LibreNMS

Networking

Free, community-driven network monitoring with commercial support sold by a third-party partner, not the project itself

From
Free
Rated
-
Full reviewWebsite
Semgrep logo

Semgrep

Cybersecurity

Open-source static analysis tool for finding security bugs and enforcing code standards.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: LibreNMS there is no official LibreNMS company; commercial support runs through a single designated third-party partner, Config Services Ltd, rather than a broad vendor support market; Semgrep free tier caps out at 10 contributors and 10 repositories.
  • They diverge on capability: LibreNMS covers SNMP auto-discovery, Semgrep covers Static code scanning.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which LibreNMS and Semgrep actually diverge.

Attributes where LibreNMS and Semgrep differ
AttributeLibreNMSSemgrep
Pricing modelOpen source, no licence fee; commercial support sold by a third-party partnerfreemium
PlatformsLinux, Webweb, api, linux, mac, windows
CategoryNetworkingCybersecurity

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in LibreNMS

  • SNMP auto-discovery
  • Device and OS support
  • Alerting
  • API
  • Distributed polling

Only in Semgrep

  • Static code scanning
  • Supply chain scanning
  • Secrets detection
  • Cross-file analysis
  • AI-powered triage and remediation
  • CI/CD integration

What people use each for

The jobs each tool is most often brought in to do.

LibreNMS

  • A network team wanting SNMP-based device monitoring with zero licence cost and full control over the deploymentnot Semgrep
  • An organisation with in-house Linux and networking expertise that does not need a vendor support contractnot Semgrep
  • A team wanting an alternative to Icinga that is focused specifically on network device polling rather than general infrastructure monitoringnot Semgrep
  • A company wanting SLA-backed support for LibreNMS but without wanting to build that capability in-house, contracting the designated partner insteadnot Semgrep

Semgrep

  • Scanning code for security vulnerabilities in CI/CDnot LibreNMS
  • Detecting vulnerable open-source dependenciesnot LibreNMS
  • Finding hardcoded secrets before code shipsnot LibreNMS
  • Enforcing custom code standards with rule setsnot LibreNMS
  • Prioritizing findings with AI-assisted triagenot LibreNMS

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

LibreNMS

  • There is no official LibreNMS company; commercial support runs through a single designated third-party partner, Config Services Ltd, rather than a broad vendor support market
  • Self-hosting and maintaining LibreNMS requires real Linux and SNMP expertise, and there is no vendor obligated to fix issues without a separate paid support arrangement
  • Device and OS support quality varies because it is community-contributed, so obscure or newer hardware may have thinner or less accurate polling templates than mainstream vendors
  • The web interface, while functional, is less polished out of the box than commercial tools like PRTG, and dashboard customisation takes more manual configuration
  • Scaling to a very large device count requires manually configuring distributed polling, which is more operational work than a SaaS tool that scales transparently
  • Project direction depends on community and contributor priorities rather than a company roadmap, so feature development pace and priorities can be less predictable than a commercial vendor's

Semgrep

  • Free tier caps out at 10 contributors and 10 repositories.
  • Secrets scanning is priced as a separate module ($15/contributor) from Code and Supply Chain.
  • Self-managed repositories and custom CI/CD require the Enterprise tier.
  • AI credits are limited per tier and additional usage requires upgrading.

Pricing, plan by plan

LibreNMS

Free
  • LibreNMSFree
    • Full functionality
    • No usage limits
    • Community forum and GitHub support

Semgrep

Free
  • FreeFree
    • Up to 10 contributors
    • Code and Supply Chain scanning
    • 60 AI credits total
  • Teams$30/month
    • Code, Supply Chain, or Secrets scanning per contributor
    • Pro rules
    • AI-powered triage and remediation
  • Enterprise$undefined/month
    • On-prem support
    • Custom CI/CD
    • 50 AI credits per developer/month

Which should you pick?

Choose LibreNMS if

  • You need snmp auto-discovery.
  • You want to start without paying.
  • You work on Linux, Web.
  • You also want device and os support.
LibreNMS review

Choose Semgrep if

  • You need static code scanning.
  • You want to start without paying.
  • You work on web, api, linux, mac, windows.
  • You also want supply chain scanning.
Semgrep review

Questions people ask

Is LibreNMS or Semgrep better?
Neither clearly leads. LibreNMS starts at Free and Semgrep at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, LibreNMS or Semgrep?
LibreNMS starts at Free and Semgrep at Free.
Does LibreNMS or Semgrep run on more platforms?
LibreNMS runs on Linux, Web. Semgrep runs on web, api, linux, mac, windows.
Can I use LibreNMS for free?
Both have a free tier, so you can try either at no cost before committing.
What is LibreNMS best used for?
LibreNMS is most often used for a network team wanting snmp-based device monitoring with zero licence cost and full control over the deployment, an organisation with in-house linux and networking expertise that does not need a vendor support contract, a team wanting an alternative to icinga that is focused specifically on network device polling rather than general infrastructure monitoring, a company wanting sla-backed support for librenms but without wanting to build that capability in-house, contracting the designated partner instead. Of those, a network team wanting snmp-based device monitoring with zero licence cost and full control over the deployment and an organisation with in-house linux and networking expertise that does not need a vendor support contract are not what Semgrep is typically brought in for.
What can LibreNMS do that Semgrep cannot?
LibreNMS covers SNMP auto-discovery, Device and OS support, Alerting, API. Semgrep covers Static code scanning, Supply chain scanning, Secrets detection, Cross-file analysis.

Answered from the vendors’ own pages

LibreNMS: Is LibreNMS really free with no paid tier of the software?

Yes, the software itself has no licence fee; only optional third-party support is paid.

Semgrep: What does Semgrep cost?

The Free edition covers up to 10 contributors; Teams starts at $30/contributor/month for Code scanning (Supply Chain also $30, Secrets $15); Enterprise is custom-priced.

Source
LibreNMS: Who provides paid support?

Config Services Ltd is the designated partner offering SLA-backed support and consultancy for LibreNMS.

Semgrep: Is there a free plan, and what are its limits?

Yes, the Free edition supports up to 10 contributors and 10 repositories with Code and Supply Chain scanning plus 60 AI credits total.

Source
LibreNMS: Does LibreNMS require SNMP access to every device?

Yes, its core monitoring approach relies on SNMP polling, so devices must have SNMP enabled and reachable.

Semgrep: How is usage metered?

Pricing is per contributor, defined as someone who made at least one commit to a scanned private repository in the past 90 days.

Source
Semgrep: Is there special pricing for startups?

Yes, Semgrep offers special startup pricing upon request for early-stage companies.

Source
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