Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience real numbers from our own analytics — open to see them
–Visitors
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · counted by iTechGuides's own first-party analytics, bots removed, every figure rounded down · how we count

OpenSLO

Free#12 of 13 in Site Reliability Engineering Platforms

OpenSLO: A vendor-neutral SLO schema with CLI validation, not a monitoring or SLO-management platform. Ranked #12 of 13 in Site Reliability Engineering Platforms by our editors (6.2/10); pricing: Open source; best for teams standardizing SLO definitions in CI/CD.

6.2/10Editor score
Visit OpenSLO
OpenSLO6.2 Visit OpenSLO

At a glance

  • Editor score
    6.2 / 10
  • Pricing
    Open source
  • Best for
    Teams standardizing SLO definitions in CI/CD
  • Paid from
    None
  • SLO management
    No
  • Facts checked
    28 Sep 2026

  • Where it wins

    • Defines SLOs, SLIs, objectives, time windows, and budgeting methods in YAML
    • Includes service, data-source, alert-policy, and notification-target objects
    • Oslo CLI validates definitions in CI/CD workflows

  • Where it doesn't

    • Does not collect metrics or track SLO performance
    • Does not provide error-budget tracking or reliability scorecards
    • A specification, not a platform for managing SLO workflows

Our verdict on OpenSLO

OpenSLO is an open, vendor-agnostic specification for defining service level objectives and indicators for services and applications. It is aimed at teams that want a shared, declarative format for SLO definitions, especially when those definitions need to fit into CI/CD workflows. Its YAML schema covers services, data sources, objectives, budgeting methods, and alert policies. The Oslo CLI can validate OpenSLO definitions, giving teams a way to check the format in their delivery workflow.

The central distinction is that OpenSLO describes reliability intent; it does not operate the systems that measure or manage it. The schema can express metric queries for service level indicators, time windows, and budgeting methods, and can define alert conditions and notification targets. Those definitions are designed to support interoperability between reliability tools. Teams should therefore view OpenSLO as a common language for configuration rather than as a destination for dashboards or live service data.

OpenSLO is open source, with no paid plans described here. It does not itself collect metrics, track SLO performance or error budgets, produce reliability scorecards, or automate SRE workflows. That makes it a fit for organizations seeking consistency and validation across SLO definitions, particularly when connecting definitions to CI/CD. Teams that need a managed SLO platform to calculate performance, monitor budgets, or report reliability should choose a product that provides those operational capabilities instead.

OpenSLO pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.
See plans on openslo.com

OpenSLO fact sheet

Free planNot verified
Paid fromNone
SLO managementNo
Error-budget trackingNo
Reliability scorecardsNo
Workflow automationNo
SRE reportingNo
Service limitNot verified
Deployment modelNot verified
PricingOpen source
Websiteopenslo.com
Facts checked28 Sep 2026

Alternatives to OpenSLO

See all OpenSLO alternatives →

Used OpenSLO? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used OpenSLO for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Your rating

0 characters · at least 80, up to 3,000

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Featured on iTechGuides — OpenSLO 6.2/10

OpenSLO is listed in our Site Reliability Engineering Platforms directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/openslo/"><img src="https://www.itechguides.com/best/badge/openslo.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. How we rank.

Last updated · How we research and update