Harness vs. Flagsmith

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What is Harness?

Harness is an AI-enabled software delivery and DevOps platform that provides tools for managing application development, testing, security, deployment, and operational costs. The platform includes continuous integration functionality for automating code builds, executing tests, and publishing software artifacts through configurable pipelines. Its continuous delivery capabilities allow engineering teams to deploy applications across multiple environments while managing approvals, release strategies, and automated rollback procedures. Harness supports progressive delivery through canary deployments, blue-green releases, and feature flags that control how application changes reach users. Infrastructure as code management capabilities help teams provision cloud resources, manage Terraform and OpenTofu workflows, detect configuration drift, and apply governance policies. The platform includes security testing orchestration, static application security testing, software composition analysis, and software supply chain security tools. Runtime protection capabilities address API security, application threats, and risks associated with deployed AI systems. Harness provides AI-powered agents that can assist with software delivery tasks, investigate pipeline failures, generate workflows, and perform operations within defined governance controls. Its cloud and AI cost management capabilities provide spending visibility, resource optimization recommendations, and cost allocation across engineering environments. Engineering intelligence features consolidate information about development activity, software delivery performance, security findings, and AI adoption into reporting dashboards. The platform integrates with source control systems, cloud infrastructure providers, security scanners, observability tools, and other development applications while offering centralized access management, policy enforcement, and audit logging.

What is Flagsmith?

Flagsmith helps product and engineering teams launch new features safely — and roll them back instantly if something goes wrong — without waiting on a full deployment cycle. It's an open-source feature management platform available as a hosted service, a private cloud deployment, or a fully on-premise install. Software Development Businesses use Flagsmith to: Control feature releases with gradual rollouts and immediate rollback Adjust settings and configuration live, cutting down on engineering deployment cycles Test new ideas with A/B and multivariate experiments targeted at specific customer segments Gather early feedback through structured beta programs before a full launch Keep multiple teams and projects organized with role-based permissions Plug into existing business tools through built-in integrations Automate flag management with an AI-ready CLI and MCP support Whether you're a startup shipping fast or an enterprise managing complex rollouts, Flagsmith gives your team the control to release with confidence.

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Integrations Supported

Datadog

Dynatrace

Jira

Kubernetes

New Relic

Prometheus

Red Hat OpenShift

ServiceNow

Splunk AppDynamics

Amazon Web Services (AWS)

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Integrations Supported

Datadog

Dynatrace

Jira

Kubernetes

New Relic

Prometheus

Red Hat OpenShift

ServiceNow

Splunk AppDynamics

Show More Integrations

See All Integrations

API Availability

Has API

API Availability

Has API

Pricing Information

Pricing not provided

Free Version

Free Trial Offered?

Pricing Information

$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

Free Trial Offered?

Supported Platforms

SaaS

On-Prem

Supported Platforms

SaaS

Windows

On-Prem

Linux

Customer Service / Support

Standard Support

24 Hour Support

Web-Based Support

Customer Service / Support

Standard Support

Web-Based Support

Training Options

Documentation Hub

Webinars

Online Training

Training Options

Documentation Hub

Webinars

Online Training

On-Site Training

Company Facts

Organization Name

Harness

Date Founded

2016

Company Location

United States

Company Website

harness.io

Company Facts

Organization Name

Flagsmith

Date Founded

2018

Company Location

United Kingdom

Company Website

www.flagsmith.com

Categories and Features

AI Testing Tools

Not specified

Artifact Management

Not specified

Automated Testing

Not specified

Change Management

Approval Workflow

Audit Trail

Change Planning

Compliance Management

Chaos Engineering

Not specified

Cloud Cost Management

Cost Reduction Optimization

Dashboard

Data Visualization

Resource Usage Reporting

Roles / Permissions

Spend and Cost Reporting

Cloud Infrastructure Automation

Not specified

Continuous Delivery

Application Lifecycle Management

Application Release Automation

Build Automation

Build Log

Change Management

Configuration Management

Continuous Deployment

Continuous Integration

Feature Toggles / Feature Flags

Quality Management

Testing Management

Continuous Integration

Build Log

Change Management

Continuous Delivery

Continuous Deployment

Debugging

Permission Management

Quality Assurance Management

Testing Management

DevOps

Approval Workflow

Dashboard

KPIs

Policy Management

DORA Metrics

Not specified

Feature Management

A/B Testing

Feature Flag / Toggle

Feature Rollout Management

KPI Monitoring

Kill Switch

Multivariate Testing

Product Experimentation

FinOps

Not specified

Incident Management

Not specified

Incident Response

Not specified

Internal Developer Portals

Not specified

Release Management

Not specified

Repository Management

Not specified

Security Orchestration, Automation and Response (SOAR)

Not specified

Software Development Analytics

Not specified

Software Development Life Cycle (SDLC)

Not specified

Software Engineering Intelligence

Not specified

Software Testing

Automated Testing

Black-Box Testing

Dynamic Testing

Issue Tracking

Quality Assurance Planning

Reporting / Analytics

Static Testing

Source Code Management

Not specified

Value Stream Management

Not specified

Visual Testing

Not specified

Categories and Features

AB Testing

Flagsmith serves as your experimentation's bucketing solution while keeping your analytics infrastructure intact. With the ability to create multivariate flags and assign variants based on percentage distributions, Flagsmith ensures that traffic is allocated in a predictable manner. Each user is consistently assigned the same variant during evaluations until you decide to adjust the weights. You can use segments to limit tests to specific user groups, such as certain plan tiers, geographic locations, or beta testing groups. This same feature can also facilitate beta programs to gather initial user feedback. Importantly, Flagsmith does not track events or determine statistical significance. Instead, simply relay the variant name to your existing analytics platform. Flagsmith seamlessly integrates with tools like Amplitude, Mixpanel, Segment, Heap, and Rudderstack, or you can route data to your custom pipeline via webhooks. This approach allows you to maintain a single source of truth for your metrics. Whether you utilize our cloud solution, your private cloud, or an on-premise setup, Flagsmith operates consistently across all environments.

Audience Targeting

Campaign Segmentation

Landing Pages / Web Forms

Multivariate Testing

Split Testing

Configuration Management

Access Control / Permissions

Continuous Delivery

Continuous Deployment

Continuous Integration

Feature Toggles / Feature Flags

DevOps

Dashboard

Release Management

Feature Management

Implement a feature flag to encapsulate a new functionality, push the code live, and determine the visibility later. This flag can maintain varying states across different environments, allowing for behavior adjustments in production without the need for redeployment. The targeting options encompass boolean flags, multivariate flags, remote configuration settings, user identities with attributes, segments formed by rules based on those attributes, and percentage-based rollouts for canary deployments. For flag evaluation, Flagsmith provides server-side SDKs that can operate in a local evaluation mode, resolving flags internally without requiring network calls for each check. The Edge API delivers client and mobile SDK support from the closest geographical location. Additionally, offline mode is available for environments lacking outbound connectivity. There are over 15 open-source SDKs available, including options for TypeScript, Python, Java, C#, Go, Ruby, PHP, Swift, Kotlin, and Flutter. Governance capabilities feature audit trails, role-based access management, change requests with approval workflows, scheduled updates, SAML SSO integration, and SCIM provisioning. Automation can be achieved through the REST API, Terraform, and more.

A/B Testing

Feature Alerts

Feature Flag / Toggle

Feature Rollout Management

Kill Switch

Multivariate Testing

Product Experimentation

Whitelist Creation