Flagsmith

Flagsmith is a flexible and open-source tool designed for managing features across web, mobile and server-side applications. The software combines feature toggles with remote config concepts to enable businesses to create, configure and manage features easily for individual segments, users and development environments. Additionally, Flagsmith allows phased rollouts through gradual deployment of new features or canary deployments, A/B testing and multivariate testing.

Ideal for data-sensitive organizations that aim to deploy flags on-premises or private cloud platform, the self-hosted service dispels privacy concerns. It also offers SaaS solutions suitable for integrated feature flagging throughout an organization's infrastructure. Those using Flagsmith can load test new code in production before releasing it to their entire user population while control groups help facilitate A/B/N tests enabling marketers fine-grained insight into application performance.

Finally, one standout feature of the product is its remote config capability which allows altering app configuration without deploying changes manually. Businesses use this functionality as part of their rollout management process allowing them greater flexibility in maintaining delivery schedules whilst reducing potential downtime risks associated with frequent deployments.