Featurevisor

Featurevisor is built for software teams that want to manage flags, experiments and configuration alongside code. It is a strong fit when Git review and local evaluation matter more than a vendor-managed control plane.

Overview

Teams define feature settings in YAML, build environment-specific datafiles and deploy them for SDKs to evaluate. Ordered targeting rules, percentage rollouts and weighted experiment variations cover gradual releases and testing; typed variables add defaults and targeted overrides. Build-time schema validation helps catch configuration errors before they reach an application.

Applications fetch static JSON datafiles and evaluate features locally in memory, avoiding a network request for every decision. Serving those files from a customer-owned CDN keeps a vendor out of the request path and avoids a hosted evaluation service to keep alive. The trade-off is clear: teams own the datafile build and delivery workflow, so Featurevisor is less suitable for buyers who want a managed service.

Key features

• Git change control: Pull requests and CI linting, tests and builds put feature changes through the same review process as code. Production values can be attributed to commits, reviewers and builds, which helps teams that need a traceable release history.
• Local tests: YAML test specifications assert expected behavior locally or in CI. Failed assertions return a non-zero exit, making the checks useful as a deployment gate rather than just a manual aid.
• SDKs and integrations: SDKs cover JavaScript, Node.js, browsers, Go, Python, PHP, Ruby, Java, Kotlin, Swift, Rust and Elixir, alongside framework guides and optional OpenFeature providers. CI/CD guides cover GitHub Actions, GitHub Pages, Cloudflare Pages and PartyKit.
• Experiments and analytics: Weighted variations support A/B and multivariate experiments, which can connect to a team's existing analytics tool; a Google Analytics tracking guide is included. Teams choose their analytics stack rather than relying on a named built-in analytics service.

Pricing

The Featurevisor plan costs free. It is self-hosted, has no per-seat pricing and is MIT-licensed. That makes it a practical option for teams that can operate their own deployment path and want to avoid seat-based fees or a paid evaluation service. Its cost advantage comes with infrastructure responsibility: the team builds and serves datafiles from its own CDN.

Platforms

Featurevisor is listed for Android, API, iOS, Linux, macOS, self-hosted, web and Windows. The SDK languages include JavaScript, Node.js, browsers, React, React Native, Go, Python, PHP, Ruby, Java, Swift and Next.js. This broad coverage helps teams working across different application stacks, though the self-hosted delivery model still needs to fit their operational setup.

Who it's for

Featurevisor suits engineering teams that already use Git and CI for change review and can own datafile deployment. It is particularly relevant for progressive delivery, testing in production, trunk-based development, remote configuration and microfrontends. Teams seeking a centrally managed service or unwilling to maintain their own delivery infrastructure should consider another approach.

Pros and cons

• Pro: Local in-memory evaluation avoids a network request per decision and removes a vendor service from the application request path.
• Pro: Git pull requests, CI checks and YAML tests make changes reviewable and failures detectable before deployment.
• Pro: The free, MIT-licensed, self-hosted plan has no per-seat pricing.
• Con: Teams must build environment datafiles and serve them from their own CDN, adding operational ownership in place of managed delivery.
• Con: Its Git- and YAML-centered workflow is a poor match for teams that want feature management without engineering-led configuration.

Alternatives

Flagsmith is worth considering for teams seeking a freemium product with a free trial and open-source core feature flag functionality under a BSD-3 licence for most of the product.

GO Feature Flag is another free option for teams wanting an open-source plan on their own infrastructure, with unlimited feature flags and community support.

ConfigCat may suit teams who prefer a freemium option with a Forever Free plan capped at 10 flags, 2 environments and 2 products, plus monthly config-download and network-traffic limits.

feat offers a free plan with 7,500 MAU, 100 server connections, 2 projects, unlimited environments and flags; it may fit teams whose usage fits those stated caps.

Featureflow is an alternative for teams looking for a free-forever tier with no credit card, up to 5 seats, 1 project, 2 environments and 1M SDK requests per month, plus a free trial.

Flipt is another freemium choice for teams drawn to an open-source, Git-native workflow with Git sync and a UI.

Bucketeer may appeal to teams seeking a free, open-source self-hosted option without per-seat pricing.

DevCycle is a freemium alternative for teams whose needs fit its free plan's client-side MAU and cloud and server config request caps.

Browse more options in Feature Flag Software.

Verdict

Choose Featurevisor if your team wants feature management governed through Git, local evaluation and a free self-hosted model. Its strongest reason to choose it is the combination of reviewed configuration changes and a vendor-free request path; look elsewhere if you want someone else to operate the datafile delivery workflow.