LaunchDarkly - LaunchDarkly is a powerful development tool which allows software developers to roll out updates and new features.
Ansible - Radically simple configuration-management, application deployment, task-execution, and multi-node orchestration engine
Octopus Deploy - Octopus is a friendly deployment automation tool for .NET developers.
ConfigCat - ConfigCat is a developer-centric feature flag service with unlimited team size, awesome support, and a reasonable price tag.
Bamboo - Bamboo is a continuous integration and deployment tool that ties automated builds, tests and releases together in a single workflow.
TeamCity - TeamCity is an ultimate Continuous Integration tool for professionals