Flagsmith
Flagsmith is an open-source feature flag and remote configuration platform that enables development teams to control feature releases across web, mobile, and server-side applications, serving enterprises in regulated industries and a developer community of 6,800+ Discord members.
- Company typePrivate
- Founded2018
- HeadquartersLondon, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Flagsmith does
Flagsmith, operated by UK-registered Bullet Train Ltd and headquartered in London, provides an open-source feature flag and remote configuration platform that enables development teams to control feature releases across web, mobile, and server-side applications. The platform supports multiple evaluation modes including Remote Evaluation (request/response), Local Evaluation (server-side only for maximum performance), and a self-hosted Edge Proxy, with a globally distributed Edge API optimized across eight regions and a 99.95% uptime SLA. Flagsmith delivers SDKs in 14+ programming languages, real-time flag updates via Server-Sent Events on SaaS, segmentation with percentage-based rollouts, A/B and multivariate testing, and enterprise governance features including RBAC, audit logs, approval workflows, and SOC 2 Type 2 certification. The product portfolio spans Cloud SaaS, Private Cloud, Self-Hosted, and Open Source deployment options, with a "Flagsmith for AI" line and an MCP Server enabling AI agents to control feature flags through natural language.
The company operates a hybrid go-to-market combining product-led growth (self-serve signup, free tier with 50,000 monthly requests, $45/month Startup plan, and a 6,800+ member Discord community) with enterprise direct sales targeting regulated industries such as banking, insurance, and government. Revenue is generated through tiered subscription pricing for cloud and self-hosted deployments, plus professional services bundled with Enterprise contracts. Flagsmith is bootstrapped, has no external venture funding, and operates with a 1-10 person team. Named customers span Citi, Ford, Okta, KB Bank, Vontobel, OakNorth Bank, SunRun, Delinea, Wistia, and Creditas, indicating enterprise traction across financial services, automotive, identity management, clean energy, and security verticals. Marketing relies on developer relations, educational content (blog, guides, eBooks), a podcast on commercial open-source software, comparison pages against competitors like LaunchDarkly and Firebase, and open-source community engagement via GitHub and Discord.
Flagsmith firmographics
Firmographics- Name
- Flagsmith
- Legal name
- Bullet Train Ltd
- Website
- https://flagsmith.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Flagsmith is an open-source feature flag and remote configuration platform that enables development teams to control feature releases across web, mobile, and server-side applications, serving enterprises in regulated industries and a developer community of 6,800+ Discord members.
- Ownership category
- akta.pro rank
Flagsmith industry classification
Industry- Product category
- Feature Flag Management Software
- akta.pro primary industry
- LiveOps Tooling, Remote Config, Feature Flags & Experimentation (A/B) (MPAFAFAO)
Keywords
Where Flagsmith is headquartered
LocationHeadquarters
- HQ city
- London
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
Flagsmith business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Infrastructure, Personnel, Marketing or Sales, Operations
Revenue model
- Cloud SaaS Subscription: Tiered subscription model for cloud-hosted Flagsmith service with Free, Start-Up ($45/month), and Enterprise tiers. Free tier offers unlimited flags with 50,000 requests/month. Start-Up tier provides 1,000,000 requests/month with flag scheduling and 2FA.
- Private Cloud Deployment: Single-tenant private cloud solution for teams requiring advanced security features and specific compliance requirements, bundled with Enterprise plan
- Self-Hosted / On-Premise: Self-hosted deployment option for organizations wanting to manage their own infrastructure with maximum application-level security and minimized service-to-service latency
- Enterprise Support & Onboarding: Dedicated technical support, onboarding, and training services bundled with Enterprise plan custom quotes
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Freemium | Monthly | Free tier for solo developers or small teams |
| Subscription | Monthly | Startup tier for growing teams |
| Subscription | Annual | Enterprise tier for large organizations |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels9 records
Flagsmith product offering
Product offeringCore offering
Flagsmith provides an open-source feature flag and remote configuration platform that enables developers to create, manage, and control feature toggles across web, mobile, and server-side applications. The platform supports segmentation, A/B and multivariate testing, role-based access control, audit logs, and offers multiple deployment options including Cloud SaaS, Self-Hosted, Private Cloud, and Open Source. It serves software development teams and enterprises in regulated industries with SDKs in 14+ languages and integrations across analytics, monitoring, and DevOps tools.
Product overview
Flagsmith is an open source feature flag and remote configuration platform that provides a unified system for managing feature releases across web, mobile, and server-side applications. The platform's core offering consists of Feature Flags & Remote Config, Segmentation, A/B & Multivariate Testing, and Role-Based Access & Governance modules, which work together to enable controlled feature rollouts and experimentation. The product portfolio includes the Edge API for global low-latency delivery, Real-Time Flags for instant state updates via Server-Sent Events, SDKs in 14 programming languages, and the MCP Server for AI agent integration. Flagsmith supports flexible deployment options including Cloud SaaS, Self-Hosted, Private Cloud, and Open Source, making it suitable for enterprises in regulated industries like banking and financial services. The platform integrates with analytics tools (Amplitude, Mixpanel, Heap), monitoring platforms (Datadog, Dynatrace, New Relic), project management (Jira), and CI/CD tools (Terraform, GitHub, GitLab) to fit into existing development workflows.
Differentiator
Problem solved
Functional benefit
Products and services
- Feature Flags & Remote Config Core feature flag and remote configuration platform enabling developers to create, manage, and control feature toggles across web, mobile, and server-side applications with real-time updates.
- Segmentation User segmentation engine for targeting feature flags to specific users, user groups, or percentage-based rollouts based on traits, behaviors, and custom attributes.
- A/B & Multivariate Testing Experimentation platform enabling percentage-based traffic splitting across feature variations for precise A/B/n testing and multivariate experiments.
- Role-Based Access, Change Control & Security Enterprise security features including Role-Based Access Control (RBAC), audit logs, approval workflows, and version control for feature flag changes.
- Edge API Globally distributed Edge API for low-latency feature flag evaluation across 8+ regions worldwide.
- Real-Time Flags Real-time feature flag updates using Server-Sent Events for instant flag state changes without polling.
- Flagsmith SDKs Software Development Kits supporting 14+ programming languages including Python, JavaScript, TypeScript, React, Next.js, Node.js, Android/Kotlin, iOS/Swift, Flutter, Ruby, .NET, PHP, Go, and Rust.
- MCP Server Model Context Protocol server enabling AI agents to interact with and control feature flags through natural language commands for AI-powered feature management workflows.
- Cloud Deployment SaaS cloud deployment hosted by Flagsmith with infrastructure optimized across 8+ regions worldwide, available with Free, Startup ($45/month), and Enterprise tiers.
- Self-Hosted Self-hosted deployment option for organizations requiring on-premises or private cloud installation with full infrastructure control and maximum security.
- Private Cloud Single-tenant private cloud deployment managed by Flagsmith for organizations with specific compliance, security, and data residency requirements.
- Open Source Open source deployment option with freely available source code on GitHub under permissive licensing, enabling community-driven adoption and self-hosting.
Quantifiable outcome
- 99.95% uptime SLA commitment for cloud service
- +2 more outcomes
Companies that use Flagsmith
Customer profileNamed customers10 records
Segments5 records
Ideal customer profiles3 records
Flagsmith technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration15 records
AI capability6 records
Feature15 records
Flagsmith partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core.
- Amazon Web Services (AWS)corePrimary data hosting infrastructure provider for Flagsmith's cloud platform. AWS hosts the production database and cloud infrastructure across multiple regions.
- StripecorePayment processing platform for handling customer subscriptions and billing
- ChargebeecoreSubscription and billing software platform managing recurring billing operations
- GitHubcoreFlagsmith GitHub integration links feature flags to Issues and Merge Requests with automatic comments on every state change
- OpenFeaturecoreVendor-neutral feature flag SDK specification initiative. Flagsmith supports OpenFeature standard for provider-agnostic feature flagging
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Flagsmith competitors and assessment
Company assessmentDirect peers
- LaunchDarkly: LaunchDarkly is the leading enterprise feature management platform offering feature flags, experimentation, and progressive delivery. It is the closest direct competitor to Flagsmith, with comparable core functionality but cloud-only deployment and significantly larger funding and headcount.
- ConfigCat: ConfigCat is a feature flag service targeting developers and small teams with a freemium SaaS model. It competes head-to-head with Flagsmith's Start-Up and Free tiers and is frequently mentioned in Flagsmith's own comparison marketing.
- Unleash: Unleash is an open-source feature management platform offering feature flags and remote configuration with self-hosted and SaaS deployment. It is a direct competitor sharing Flagsmith's open-source DNA and developer-first positioning.
Emerging players
- GrowthBook: GrowthBook is an open-source A/B testing and feature flagging platform built for product and engineering teams. It overlaps with Flagsmith's experimentation capabilities and open-source deployment model, appealing to growth-stage and scale-up customers.
- Eppo: Eppo is an experimentation platform focused on A/B testing and feature experimentation with a warehouse-native architecture. It overlaps with Flagsmith's experimentation capabilities and competes for product-led growth and analytics-driven buyers.
- Statsig: Statsig is a feature management and experimentation platform with strong A/B testing capabilities, founded by ex-Facebook engineers. It targets enterprise product teams and overlaps meaningfully with Flagsmith's segmentation and A/B/n testing features.
Broad incumbents
- Optimizely: Optimizely is a large experimentation and feature management platform with deep enterprise penetration. It overlaps with Flagsmith's A/B and multivariate testing products but operates as a broader marketing and product experimentation suite.
- Firebase Remote Config (Google): Firebase Remote Config is Google's cloud feature flag and configuration service tightly integrated with the Firebase mobile/web platform. It is a competitor in the SMB segment where Flagsmith explicitly benchmarks itself, though limited to 25 user properties versus Flagsmith's unlimited traits.
- Split Software (Harness): Split, now part of Harness, offers feature flagging and experimentation integrated into Harness's broader DevOps platform. It competes with Flagsmith for enterprise buyers wanting feature flags bundled into a larger software delivery suite.
Others
- OpenFeature (CNCF): OpenFeature is a CNCF-incubated vendor-neutral specification for feature flag SDKs, in which Flagsmith actively participates. It is not a competitor but a standards initiative whose adoption directly affects Flagsmith's ecosystem positioning and distribution.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat5 records
Key risks4 records
Key highlights7 records
Customer concentration
Flagsmith social profiles
Digital presenceFlagsmith compliance and trust
Trust signalCompliance1 record
Flagsmith financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flagsmith leadership team
Management profileNumber of profiles
Profiles3 records
Flagsmith funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flagsmith M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flagsmith
What does Flagsmith do?
Flagsmith provides an open-source feature flag and remote configuration platform that enables developers to create, manage, and control feature toggles across web, mobile, and server-side applications. The platform supports segmentation, A/B and multivariate testing, role-based access control, audit logs, and offers multiple deployment options including Cloud SaaS, Self-Hosted, Private Cloud, and Open Source. It serves software development teams and enterprises in regulated industries with SDKs in 14+ languages and integrations across analytics, monitoring, and DevOps tools.
Is Flagsmith a public or private company?
Flagsmith is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Flagsmith founded?
Flagsmith was founded in 2018. It employs 11 to 50 people.
Where is Flagsmith based?
Flagsmith is headquartered in London, United Kingdom, in the Europe region.
How does Flagsmith make money?
Four revenue lines are on record. Cloud SaaS Subscription is the primary driver. The others are private Cloud Deployment, self-Hosted / On-Premise and enterprise Support & Onboarding.
Who are Flagsmith's main competitors?
Direct peers on record are LaunchDarkly, ConfigCat and Unleash. Emerging players are GrowthBook, Eppo and Statsig. Broad incumbents are Optimizely, Firebase Remote Config (Google) and Split Software (Harness). OpenFeature (CNCF) is listed as an others.
Does Flagsmith have an API?
Yes. Flagsmith provides a REST API for managing feature flags and remote configuration. The API supports environment-based access with API keys, JSON responses, and SDKs in multiple languages including Python, JavaScript, Node.js, React, Next.js, Android/Kotlin, iOS/Swift, Flutter, Ruby, .NET, PHP, Go, and Rust. The platform also offers an Edge API for global distribution. Developer documentation is at docs.flagsmith.com.
What industry is Flagsmith in?
Flagsmith's product category is Feature Flag Management Software. Its primary akta.pro industry code is MPAFAFAO, LiveOps Tooling, Remote Config, Feature Flags & Experimentation (A/B).