Flagsmith vs. Harness Comparison


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About Flagsmith is a fully supported open-source feature flag, remote config, and A/B testing service. Use our hosted API, deploy to your own private cloud, or run on-premise. Create and manage feature flags across web, mobile, and server-side applications. Wrap a section of code with a flag, and then use Flagsmith to toggle that feature on or off for different environments, users, or user segments. Feature flags – Release features with phased rollouts and instant rollback capabilities. Remote config – Toggle individual features on and off, and make changes without deploying new code. A/B and multivariate testing – Use segments to run A/B and multivariate tests on new features. Introduce beta programs to get early user feedback. Organization management – Projects, and roles for team members help keep your deployment organized. Integrations – Connect to your favorite tools. MCP and CLI – Set up automated feature management workflows controlled by your AI agents		About Harness is an AI-powered software delivery platform that helps development teams automate, manage, and secure the software development lifecycle. The platform provides continuous integration and continuous delivery capabilities for building, testing, and deploying applications across different environments. Harness supports infrastructure as code management, automated deployment verification, and release strategies such as canary and blue-green deployments. Its security capabilities include application security testing, software supply chain protection, and policy-based controls throughout the delivery process. The platform also provides cloud cost management, engineering analytics, and AI agents that assist with software delivery operations. Harness integrates with existing development tools, cloud providers, and security systems to coordinate software delivery workflows through a centralized platform.
Why Flagsmith is Better than Harness Since the Harness acquisition, Split has become Feature Management & Experimentation—just one module inside a much larger DevOps platform, with no published pricing. Even if you just want a focused feature flag tool, you have to buy the suite. Flagsmith is the opposite: an independent, open-source platform built specifically for feature flags and remote config. Our pricing is published on our website so you know your costs before you talk to anyone, and you can start for free. Harness FME is a cloud service, whereas Flagsmith can be self-hosted, on-premises, or deployed in a private cloud, making it ideal for industries that need to maintain control of their data or value data sovereignty and governance. We're also a founding member of OpenFeature, so switching to us (or away from us) doesn't mean rewriting your whole integration. For focused, flexible feature flags, try Flagsmith. See more
Platforms Supported Windows Supported Mac Not Supported Linux Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported		Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Organizations that need a feature management and A/B testing solution		Audience Software developers, DevOps engineers, platform engineering teams, site reliability engineers, security professionals, cloud infrastructure teams, and enterprise IT organizations seeking to automate software delivery, manage application security, control infrastructure costs, and improve development operations
Support Phone Support Supported 24/7 Live Support Not Supported Online Supported		Support Phone Support Supported 24/7 Live Support Supported Online Supported
API Offers API Supported		API Offers API Supported
Screenshots and Videos View more images or videos		Screenshots and Videos View more images or videos
Pricing $45/month Up to 50,000 Requests Per Month* 1 Team Member Unlimited Feature Flags Unlimited Environments Unlimited Identities and Segments API Access Free Version Supported Free Trial Supported		Pricing No information available. Free Version Supported Free Trial Supported
Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 4.7 / 5 design 4.7 / 5 support 4.7 / 5 Read all reviews		Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software
Pros from Real Users Pros Suport is amazing, always eager to help and on our side to help us solving issues. The tool is easy to use and we had no issues during all these years 1. It is straightforward to use and helps tremendously in releasing features. 2. The UI and UX of the software is well-designed and implemented. 3. The management of features is easy and does not consume a lot of time. 4. It comes with an affordable price tag. * Cheap compared to other solutions * Very good support * Quick to fix bugs * Nice interfaces * Tons of options to do almost anything with feature flags and remote configurations Easy to implement in code. Easy to use for product team. Inexpensive. Multiple projects and for each, multiple environments (e.g. Staging, Development, Production). End user segmentation into groups. Excellent support. Easy to set up, easy to implement, easy to manage. I've used several feature flag tools both free and premium. Flagsmith is the easiest to use and the most robust, especially in their entry-level tiers. It was an easy decision! UI is clean and easy to use. Extensive SDKs with support for various languages. A/B Testing and throttling. REST API support. Webhooks support to trigger actions on toggle.
Training Documentation Supported Webinars Supported Live Online Supported In Person Supported		Training Documentation Supported Webinars Supported Live Online Supported In Person Not Supported
Company Information Flagsmith Founded: 2018 United Kingdom www.flagsmith.com		Company Information Harness Founded: 2016 United States harness.io
Alternatives Flagship.io Flagship		Alternatives Flagsmith
Bucket		Cortex
DeployRamp		Massdriver
LaunchDarkly		GitLab
Split Harness View All		Jellyfish View All
Categories AB Testing Supported Flagsmith is the bucketing engine for your experiments. Your analytics stack stays where it is. Create a multivariate flag, define variants with percentage weights, and Flagsmith splits traffic deterministically. Bucketing is calculated per identity, so a user gets the same variant on every evaluation until you change the weights. Use segments to restrict a test to the users you want to target: a plan tier, a region, or a beta cohort. And you can use the same mechanism to run beta programmes for early feedback. Flagsmith does not collect events or compute significance. Instead, send the variant name to the analytics platform you already use. Flagsmith has built in integrations for Amplitude, Mixpanel, Segment, Heap and Rudderstack, or push to your own pipeline over webhooks. One source of truth for metrics instead of two. Works the same on our cloud, your private cloud, or on-premise. Configuration Management Supported Continuous Delivery Supported DevOps Supported Feature Management Supported Wrap a feature in a flag, ship the code, and decide later who sees it. The same flag can hold a different state in each environment, so nothing has to be redeployed to change behaviour in production. Targeting capabilities include boolean flags, multivariate flags, remote config values, identities with traits, segments built from rules on those traits, and percentage rollouts for canary releases. For evaluation, Flagsmith supports server-side SDKs run in local evaluation mode, resolving flags in-process with no network call per check. The Edge API serves client and mobile SDKs from the nearest geographical region. Offline mode covers environments with no outbound connectivity. 15+ open source SDKs, including TypeScript, Python, Java, C#, Go, Ruby, PHP, Swift, Kotlin and Flutter. Governance features include audit logs, role-based access control, change requests with approvals, scheduled changes, SAML SSO and SCIM provisioning. Automation is possible using the REST API, Terra Release Management Supported		Categories AI Testing Tools Supported Artifact Management Supported Automated Testing Supported Change Management Supported Chaos Engineering Supported Cloud Cost Management Supported Cloud Infrastructure Automation Supported Continuous Delivery Supported Continuous Integration Supported DevOps Supported DORA Metrics Supported Feature Management Supported FinOps Supported Incident Management Supported Incident Response Supported Internal Developer Portals Supported Release Management Supported Repository Management Supported Security Orchestration, Automation and Response (SOAR) Supported Software Development Analytics Supported Software Development Life Cycle (SDLC) Supported Software Engineering Intelligence Supported Software Testing Supported Source Code Management Supported Value Stream Management Supported Visual Testing Supported
Continuous Delivery Features Application Lifecycle Management Not Supported Application Release Automation Not Supported Build Automation Not Supported Build Log Not Supported Change Management Not Supported Configuration Management Not Supported Continuous Deployment Supported Continuous Integration Supported Feature Toggles / Feature Flags Supported Quality Management Not Supported Testing Management Not Supported DevOps Features Approval Workflow Not Supported Dashboard Supported KPIs Not Supported Policy Management Not Supported Portfolio Management Not Supported Prioritization Not Supported Release Management Supported Timeline Management Not Supported Troubleshooting Reports Not Supported Feature Management Features A/B Testing Supported Entitlement Management Not Supported Feature Alerts Supported Feature Flag / Toggle Supported Feature Rollout Management Supported Kill Switch Supported KPI Monitoring Not Supported Multivariate Testing Supported Product Experimentation Supported Whitelist Creation Supported Show More Features AB Testing Features Audience Targeting Supported Campaign Segmentation Supported Funnel Analysis Not Supported Heatmaps Not Supported Landing Pages / Web Forms Supported Multivariate Testing Supported Split Testing Supported Statistical Relevance Analysis Not Supported Surveys Not Supported Test Scheduling Not Supported Visual Editor Not Supported Configuration Management Features Access Control / Permissions Supported Application Deployment Not Supported Automated Provisioning Not Supported Infrastructure Automation Not Supported Node Management Not Supported Orchestration Not Supported Reporting Analytics / Visualization Not Supported Task Management Not Supported		Continuous Delivery Features Application Lifecycle Management Supported Application Release Automation Supported Build Automation Supported Build Log Supported Change Management Supported Configuration Management Supported Continuous Deployment Supported Continuous Integration Supported Feature Toggles / Feature Flags Supported Quality Management Supported Testing Management Supported DevOps Features Approval Workflow Supported Dashboard Supported KPIs Supported Policy Management Supported Portfolio Management Not Supported Prioritization Not Supported Release Management Not Supported Timeline Management Not Supported Troubleshooting Reports Not Supported Feature Management Features A/B Testing Supported Entitlement Management Not Supported Feature Alerts Not Supported Feature Flag / Toggle Supported Feature Rollout Management Supported Kill Switch Supported KPI Monitoring Supported Multivariate Testing Supported Product Experimentation Supported Whitelist Creation Not Supported Show More Features Change Management Features Approval Workflow Supported Audit Trail Supported Automated Notifications Not Supported Change Calendar Not Supported Change Planning Supported Compliance Management Supported Prioritization Not Supported Release Management Not Supported Task Management Not Supported Tracking & Reporting Not Supported Training Management Not Supported Cloud Cost Management Features Cost Reduction Optimization Supported Dashboard Supported Data Import/Export Not Supported Data Storage Not Supported Data Visualization Supported Resource Usage Reporting Supported Roles / Permissions Supported Spend and Cost Reporting Supported Continuous Integration Features Build Log Supported Change Management Supported Configuration Management Not Supported Continuous Delivery Supported Continuous Deployment Supported Debugging Supported Permission Management Supported Quality Assurance Management Supported Testing Management Supported Software Testing Features Automated Testing Supported Black-Box Testing Supported Dynamic Testing Supported Issue Tracking Supported Manual Testing Not Supported Quality Assurance Planning Supported Reporting / Analytics Supported Static Testing Supported Test Case Management Not Supported Variable Testing Methods Not Supported White-Box Testing Not Supported
Integrations Datadog Supported Dynatrace Supported Jira Supported Kubernetes Supported New Relic Supported Prometheus Supported Red Hat OpenShift Supported ServiceNow Supported Splunk AppDynamics Supported Auggie CLI Not Supported BI Book Not Supported DBmarlin Not Supported Doctor Droid Not Supported GitHub Supported Google Kubernetes Engine (GKE) Not Supported Katalon Recorder Not Supported OpsLevel Not Supported Quickwork Supported Segment Supported Serverless Not Supported Show More Integrations View All 24 Integrations		Integrations Datadog Supported Dynatrace Supported Jira Supported Kubernetes Supported New Relic Supported Prometheus Supported Red Hat OpenShift Supported ServiceNow Supported Splunk AppDynamics Supported Auggie CLI Supported BI Book Supported DBmarlin Supported Doctor Droid Supported GitHub Not Supported Google Kubernetes Engine (GKE) Supported Katalon Recorder Supported OpsLevel Supported Quickwork Not Supported Segment Not Supported Serverless Supported Show More Integrations View All 52 Integrations
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