Feature checklists rarely decide anything. What decides it is the pricing metric, who has to write the tests, and which limitation you can live with.
Entry price
From $99 per month (indicative, Pro)
Free tierFrom $45 per month (indicative, Start-up plan)
Free tierWhat drives the bill
The metric that actually scales your invoice.
Unlimited seats on every plan, including free — unusual and genuinely valuable for wide access.
Considerably cheaper than LaunchDarkly, and self-hosting removes usage pricing entirely.
Free tier
Free forever plan with a monthly config-request allowance and unlimited members.
Free cloud tier with a monthly request allowance; open-source self-hosting is unlimited.
Open source
BSD-3-Clause (core)
Self-hostable
No-code authoring
Languages
Platforms
Fits teams
Adoption
Established
ConfigCat · since 2018
Established
Flagsmith · since 2018
Strengths
Limitations
Best for
Teams that want simple, cheap flags accessible to the whole company.
Teams wanting straightforward flags without LaunchDarkly pricing or Unleash's operational depth.
All of these integrate with: Slack, Jira, Datadog, Terraform.
Pricing last reviewed August 2026 and is indicative only — confirm on each vendor’s own page.