# Feature Flag Software

Ranked by the Vioscale composite score: a confidence-weighted blend of independent signals, not user reviews.

| # | Software | Score | Confidence | Vendor |
|--:|---|--:|---|---|
| 1 | [GrowthBook](https://www.vioscale.ai/software/growthbook) | 76.7 | 60% (medium) | - |
| 2 | [Unleash](https://www.vioscale.ai/software/unleash) | 65.6 | 58% (medium) | - |
| 3 | [Statsig](https://www.vioscale.ai/software/statsig) | 64.5 | 63% (medium) | - |
| 4 | [Hypertune](https://www.vioscale.ai/software/hypertune) | 63.1 | 59% (medium) | - |
| 5 | [DevCycle](https://www.vioscale.ai/software/devcycle) | 63.1 | 36% (low) | - |
| 6 | [Flagsmith](https://www.vioscale.ai/software/flagsmith) | 61.2 | 56% (medium) | - |
| 7 | [ConfigCat](https://www.vioscale.ai/software/configcat) | 60.9 | 60% (medium) | - |
| 8 | [LaunchDarkly](https://www.vioscale.ai/software/launchdarkly) | 59.6 | 50% (medium) | - |
| 9 | [OpenFeature](https://www.vioscale.ai/software/openfeature) | 57.4 | 20% (low) | - |
| 10 | [Flagship](https://www.vioscale.ai/software/flagship) | 54.9 | 17% (low) | - |
| 11 | [Split](https://www.vioscale.ai/software/split) | 50.6 | 30% (low) | - |
| 12 | [Bucket](https://www.vioscale.ai/software/bucket) | 47.5 | 27% (low) | - |
| 13 | [Optimizely](https://www.vioscale.ai/software/optimizely) | 42.7 | 24% (low) | - |
| 14 | [Featurevisor](https://www.vioscale.ai/software/featurevisor) | 38.5 | 29% (low) | - |

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*Source: Vioscale (https://www.vioscale.ai/categories/feature-flags).*