OpenFeature
OpenFeature is a CNCF incubating open-source project that defines a vendor-neutral specification and 15+ language SDKs for feature flagging, enabling developers to integrate once and switch feature flag backends without code refactoring.
- Company typePrivate
- Founded2022
- Headquarters—
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What OpenFeature does
OpenFeature is an open-source project, incubated under the Cloud Native Computing Foundation (CNCF), that defines a vendor-neutral specification and a portfolio of multi-language SDKs for feature flagging. The specification standardizes a vendor-agnostic API comprising an Evaluation API, a Provider interface, Hooks, Events, Tracking, Evaluation Context, and the OpenFeature Remote Evaluation Protocol (OFREP), enabling applications to integrate once and switch between feature flag management backends without code refactoring. Officially-supported SDKs cover 15+ programming languages across server-side (C++, Dart, .NET, Go, Java, Node.js, PHP, Python, Ruby, Rust) and client-side (Kotlin for Android, Swift for iOS, Web with Angular and React integrations) environments, with an MCP Server extending the surface to AI agent tooling.
The project's primary users are Application Authors (developers integrating feature flags into applications), Provider Authors (maintainers of vendor and open-source flag management systems implementing the FeatureProvider interface), Library Authors, and Integration Authors building observability and telemetry extensions. Distribution is self-serve and global via GitHub and standard language package registries (npm, crates.io, RubyGems, Pub, PyPI, Maven Central, NuGet), with community engagement through CNCF Slack, YouTube, and social channels.
OpenFeature does not generate direct commercial revenue. It operates as a non-commercial specification project under the Apache 2.0 license, funded and stewarded through CNCF membership rather than product sales. Economic value accrues primarily to the ecosystem of feature flag vendors and integrators that build on the specification, rather than to OpenFeature itself as a revenue-generating entity.
OpenFeature firmographics
Firmographics- Name
- OpenFeature
- Legal name
- OpenFeature
- Website
- https://openfeature.dev
- Company type
- Private
- Founded year
- 2022
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- OpenFeature is a CNCF incubating open-source project that defines a vendor-neutral specification and 15+ language SDKs for feature flagging, enabling developers to integrate once and switch feature flag backends without code refactoring.
- Ownership category
- akta.pro rank
OpenFeature industry classification
Industry- Product category
- Feature Flagging Software
- NAICS
- Software Publishers (5132)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Developer & Open-Source Communities (MPACAJAK)
- akta.pro secondary industry
- Platform Engineering & Internal Developer Platforms (IDP) (BPAEAKAC)
Keywords
OpenFeature business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Personnel, Technology or R&D, Infrastructure, Operations, Marketing or Sales
Revenue model
- Open Source / Non-Commercial: OpenFeature is an open source project released under the Apache 2.0 license. The project operates as a CNCF incubating project and does not generate direct commercial revenue. Funding comes through CNCF membership and contributions rather than product sales.
Go-to-market motion2 records
Distribution channels6 records
Marketing channels7 records
OpenFeature product offering
Product offeringCore offering
OpenFeature defines an open, vendor-neutral specification and SDKs for feature flagging and feature management. Its core offering is the OpenFeature Specification — a standardized API (Evaluation API, Provider interface, Hooks, Events, Tracking) — accompanied by officially-supported SDKs for 15+ programming languages that enable applications to integrate with any feature flag management tool without code-level vendor lock-in. The project is distributed as open source software under the Apache 2.0 license as a CNCF incubating project.
Product overview
OpenFeature is an open source, CNCF incubating project that provides an open specification and vendor-agnostic API for feature flagging. The core offering consists of the OpenFeature Specification defining standardized interfaces for flag evaluation, along with a comprehensive SDK portfolio including Server SDKs (C++, Dart, .NET, Go, Java, Node.js, PHP, Python, Ruby, Rust) and Client SDKs (Kotlin/iOS, Web with Angular and React integrations). The ecosystem includes community-contributed providers for various feature flag vendors, hooks for logging/telemetry/debouncing, the OpenFeature Remote Evaluation Protocol (OFREP) for unified flag evaluation, and supporting utilities such as an In-Memory Provider for testing, Logging Hook, and Multi-Provider for combining multiple sources. An MCP Server enables AI tool integration. The project operates under the Apache 2 license and avoids vendor lock-in by providing a common interface that works with any feature flag management tool.
Differentiator
Problem solved
Functional benefit
Products and services
- OpenFeature Specification Open, vendor-agnostic specification that defines a standardized API for feature flag evaluation, enabling interoperability across different feature flag providers and avoiding vendor lock-in. Targeted at software engineering teams and feature flag vendors.
- OpenFeature Server SDKs SDK implementations for server-side applications supporting C++, Dart, .NET, Go, Java, Node.js, PHP, Python, Ruby, and Rust, enabling developers to integrate feature flag evaluation in backend services.
- OpenFeature Client SDKs SDK implementations for client-side applications including Kotlin for Android, Swift for iOS, and Web SDKs with framework-specific integrations for Angular and React.
- OpenFeature Remote Evaluation Protocol (OFREP) A unified feature flag evaluation protocol that adheres to OpenFeature semantics, enabling standardized remote evaluation of feature flags across different systems and providers.
- OpenFeature Ecosystem (Providers and Hooks) Community-contributed providers and hooks that extend OpenFeature functionality, supporting integration with various feature flag vendors and enabling custom functionality like logging, telemetry, and debouncing.
- OpenFeature MCP Server Model Context Protocol server enabling AI tools to integrate with OpenFeature for feature flag management and evaluation.
Quantifiable outcome
- Avoid code-level vendor lock-in when switching feature flag platforms or consolidating multiple providers
- +2 more outcomes
Companies that use OpenFeature
Customer profileSegments4 records
Ideal customer profiles4 records
OpenFeature technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Feature10 records
OpenFeature partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core.
- Cloud Native Computing Foundation (CNCF)coreOpenFeature operates as a CNCF incubating project, receiving governance, security reviews, legal support, marketing resources, and ecosystem visibility through the foundation. CNCF provides neutral stewardship ensuring vendor-independent development of the specification.
- Feature Flag Provider EcosystemcoreMany top open source and commercial feature flag tools have created officially-supported providers for OpenFeature, including AWS SSM and numerous other vendors. These providers enable interoperability between OpenFeature-compatible applications and specific flag management systems.
Scale indicators3 records
Recent moves6 records
Expansion highlights5 records
OpenFeature competitors and assessment
Company assessmentDirect peers
- OpenTelemetry: CNCF incubating project providing a vendor-neutral specification and SDKs for observability (traces, metrics, logs). It is the closest analog to OpenFeature: same CNCF governance model, same vendor-agnostic API strategy, same 'avoid lock-in at the SDK level' value proposition, and same broad multi-language SDK footprint.
- Flagsmith: Open-source feature flag and remote configuration service with an officially-supported OpenFeature provider. Comparable as an open-source feature flagging platform that competes in the same space and treats OpenFeature as a supported integration layer.
- Unleash: Open-source feature flag platform that ships an officially-supported OpenFeature provider. Directly comparable because Unleash targets the same feature flagging use case with an open-source, self-hostable model, and actively integrates with the OpenFeature spec.
- GrowthBook: Open-source feature flagging and A/B testing platform with an officially-supported OpenFeature provider. Comparable because it is an open-source alternative targeting the same developer/enterprise personas and has built native OpenFeature compatibility.
Broad incumbents
- Optimizely: Established experimentation and feature management platform serving enterprise digital teams. Comparable because it operates in the same feature flagging/experimentation space, although its offering is much broader and commercial.
- Statsig: Commercial feature flagging, experimentation, and product analytics platform. Comparable because it targets the same feature flagging use case for engineering and product teams, and has an officially-supported OpenFeature provider.
- Split (now part of Harness): Commercial feature flagging and experimentation platform that ships an OpenFeature provider. Comparable as a major commercial player in the same space, now part of the broader Harness DevOps platform.
- LaunchDarkly: Largest commercial feature flagging and experimentation platform; ships an officially-supported OpenFeature provider. Comparable as the category leader operating in the same space, but it is a full commercial product suite rather than a neutral specification.
Emerging players
- DevCycle: Open-source-friendly feature flagging platform with an OpenFeature-compatible SDK strategy. Comparable as a newer entrant pursuing an open-ecosystem approach to feature flagging, overlapping with OpenFeature's developer-led GTM motion.
Others
- Cloud Native Computing Foundation (CNCF): Parent foundation and governance home for OpenFeature. Relevant as the steward that provides neutral governance, security audits, marketing reach, and legal support — a structural dependency for any CNCF project and the model for similar open standards.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
OpenFeature social profiles
Digital presenceOpenFeature financial estimates
Financial estimateRevenue estimate
Valuation estimate
OpenFeature leadership team
Management profileNumber of profiles
OpenFeature funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
OpenFeature 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 OpenFeature
What does OpenFeature do?
OpenFeature defines an open, vendor-neutral specification and SDKs for feature flagging and feature management. Its core offering is the OpenFeature Specification — a standardized API (Evaluation API, Provider interface, Hooks, Events, Tracking) — accompanied by officially-supported SDKs for 15+ programming languages that enable applications to integrate with any feature flag management tool without code-level vendor lock-in. The project is distributed as open source software under the Apache 2.0 license as a CNCF incubating project.
Is OpenFeature a public or private company?
OpenFeature is a private company. It is classified as nonprofit foundation owned and is currently operating.
When was OpenFeature founded?
OpenFeature was founded in 2022. It employs 11 to 50 people.
How does OpenFeature make money?
One revenue line is on record: open Source / Non-Commercial.
Who are OpenFeature's main competitors?
Direct peers on record are OpenTelemetry, Flagsmith, Unleash and GrowthBook. Broad incumbents are Optimizely, Statsig, Split (now part of Harness) and LaunchDarkly. DevCycle is listed as an emerging player. Cloud Native Computing Foundation (CNCF) is listed as an others.
Does OpenFeature have an API?
Yes. OpenFeature provides a vendor-agnostic, community-driven API for feature flagging that works with feature flag management tools or in-house solutions. The API includes an OpenFeature Remote Evaluation Protocol (OFREP) for unified feature flag evaluation, and supports MCP (Model Context Protocol) for AI tool integration. The specification defines interfaces for evaluation, providers, hooks, events, and tracking. SDKs are available in multiple languages including C++, Dart, .NET, Go, Java, JavaScript/Node.js, PHP, Python, Ruby, and Rust. Developer documentation is at openfeature.dev/specification.
What industry is OpenFeature in?
OpenFeature's product category is Feature Flagging Software. Its primary akta.pro industry code is MPACAJAK, Developer & Open-Source Communities, with a secondary code of BPAEAKAC, Platform Engineering & Internal Developer Platforms (IDP). Its NAICS code is 5132 and its SIC code is 7372.