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Featurevisor
What it is
Featurevisor is a Git-based tool for managing feature flags, experiments, and remote configuration defined in YAML. Teams build environment-specific datafiles, deploy them, and evaluate features through an SDK. Rules can target users in order, roll out a percentage, or assign weighted experiment variations. Typed global and feature variables support defaults and targeted overrides, and schemas are validated during datafile builds. Applications fetch static JSON datafiles and evaluate flags locally in memory, without making a network request for each decision. Datafiles are served from the customer’s own CDN, so no vendor sits in the request path. YAML test specifications can check expected behavior locally or in CI, with failed assertions returning a non-zero exit. Git pull requests and CI linting, tests, and builds support change control. The product is self-hosted, MIT-licensed, and free at no cost, with no per-seat pricing. Documented SDKs, framework guides, and CI/CD integrations cover multiple environments.
For and against
For
- Supports ordered targeting, percentage rollouts, and weighted variations.
- Flags are evaluated locally from static JSON datafiles.
- YAML tests can run locally or in CI.
- MIT-licensed and listed as free.
- Includes SDKs across many languages and frameworks.
Against
- Self-hosted, so teams manage their own deployment.
- Datafiles are served from the customer’s own CDN.
- No built-in evaluation service is listed.
The verdict
Featurevisor brings feature management into a Git and CI workflow, with local evaluation and customer-controlled datafile delivery. It is a free, self-hosted option for teams comfortable maintaining that setup.
Who it suits
It suits development teams that want to manage feature behavior through Git, YAML, and environment-specific datafiles. Teams can use it for progressive delivery, experiments, remote configuration, or testing in production.
Plans and prices
Featurevisor
Open-source project · self-hosted Git workflow · no paid tier stated
Read 14 Oct 2026 · featurevisor.com
On the record
- Analytics
- Weighted experiments can connect to whichever analytics tool the customer already uses, and the docs include a Google Analytics tracking guide.featurevisor.com · read 4 Oct 2026
- Catalog tool
- The CLI can generate a searchable read-only Catalog showing definitions, relationships, tests and Git history.featurevisor.com · read 14 Oct 2026
- CI/CD integrations
- The docs include CI/CD guides for GitHub Actions, GitHub Pages, Cloudflare Pages and PartyKit.featurevisor.com · read 4 Oct 2026
- Cloudflare integration
- The documentation provides GitHub Actions workflows that lint, test, build and upload datafiles to Cloudflare Pages.featurevisor.com · read 14 Oct 2026
- Company affiliation
- GitNation identifies Fahad Heylaal as Featurevisor’s creator and lists DAZN in the Netherlands as his company affiliation.gitnation.com · read 14 Oct 2026
- Configuration
- Typed global and feature variables support defaults and targeted overrides, with schemas validated when datafiles are built.featurevisor.com · read 4 Oct 2026
- Deployment
- Datafiles are served from the customer’s own CDN, with no vendor in the request path.featurevisor.com · read 4 Oct 2026
- Deployment model
- The generated datafiles can be hosted on any CDN or static file service chosen by the customer.featurevisor.com · read 14 Oct 2026
- Documentation depth
- The documentation covers concepts, quick start, attributes, segments, features, variables, targets, projects, configuration, linting, building, testing, deployment and SDKs.featurevisor.com · read 14 Oct 2026
- Environment handling
- Definitions can contain separate environment rules, while Sets provide independent project trees that can be promoted between stages.featurevisor.com · read 14 Oct 2026
- Evaluation
- Applications fetch static JSON datafiles and evaluate flags locally in memory without a network request for each decision.featurevisor.com · read 4 Oct 2026
- Experiments
- Features can define weighted string variations for A/B and multivariate experiments.featurevisor.com · read 14 Oct 2026
- Extensibility
- Featurevisor has a Plugins API for extending CLI functionality.featurevisor.com · read 14 Oct 2026
- Feature controls
- Features support ordered targeting rules, percentage rollouts and weighted variations for experiments.featurevisor.com · read 4 Oct 2026
- Feature flags
- Boolean flags use ordered targeting rules whose first matching rule determines the result.featurevisor.com · read 14 Oct 2026
- GitOps workflow
- Changes are made through pull requests, CI linting and tests, datafile builds, and deployment to a customer-controlled CDN.featurevisor.com · read 14 Oct 2026
- Licence
- The GitHub repository is publicly marked as MIT licensed.github.com · read 14 Oct 2026
- License and maker
- The site identifies the project as MIT-licensed and says it is built by Fahad Heylaal.featurevisor.com · read 4 Oct 2026
