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Feature Flags

Feature toggles, A/B testing, rollouts

Reviewed byRoman Kยท 2026-05-06

Soft.xyz tracks 3 feature flags tools, 2 with a free plan, 2 open source. Paid entries start at $0/mo (Flagsmith) and go up to $10/mo (LaunchDarkly). Most GitHub traction: Unleash with 13,600 stars. Rankings below use real metrics, not vendor claims.

3 feature flags tools currently tracked: 2 open source, 0 with a managed free tier, 1 paid-only.

By GitHub activity the most popular is Unleash (13.6k stars).

Cheapest paid plan in the list starts at $10/mo (LaunchDarkly).

FAQ

How many feature flags tools are tracked here?

3, of which 2 offer a free plan and 2 are open source.

What is the cheapest feature flags tool?

Flagsmith starts at $0/mo, while LaunchDarkly is the priciest tracked entry at $10/mo.

Which feature flags tool has the most traction?

Unleash leads the tracked set with 13,600 GitHub stars.