Dev tools · alternatives · 2026
24 alternatives to Flagr
Open source feature flagging and A/B testing service
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Flagr launched in 2017; newer entries below may have overtaken it.
- 1
Free, open-source library for using feature flags in Next.js
2025 · flags-sdk.dev · its alternatives →
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dif.sh▲373Markdown feature flags your coding agent installs for you
Aug 2026 · dif.sh · its alternatives →
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Vercel Flags▲207Feature flags, targeting rules, rollouts. All from Vercel.
Apr 2026 · vercel.com · its alternatives →
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Flipt v2▲178Hey all, I'm the founder of Flipt, an open-source (https://github.com/flipt-io/flipt) feature flag tool that I (and others) have been working on for the past few years. About a year or two ago we added support for serving flag state from various non-relational declarative stores like Git, OCI, Object Store, etc. Many of our users came to love the git-backed storage, as it allows them to keep their feature flags close to their code in there organization's repos. But they had one (rather large) ask, and that was the ability to use the UI to manage flag state changes and…
Oct 2025 · flipt.io · its alternatives →
- 7
Analytics, insights, and feature flags in one platform
2025 · databuddy.cc · its alternatives →
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Flagsmith is an open-source feature flag platform with remote config, experimentation, and self-hosted or cloud deployment options. - Flagsmith/flagsmith
2021 · github.com · its alternatives →
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Bucket DX▲294Co-founder here Reflag is designed for SaaS products that run on TypeScript. We've been working on this for a few years (team of 6). Feedback welcome!
2025 · reflag.com · its alternatives →
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OpenFlags▲114Fast, self-hosted, edge-ready feature flags for modern teams
Mar 2026 · openflags.dev · its alternatives →
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Feature Flag Management Tool and SDK for Software Teams
2024 · simpleflags.io · its alternatives →
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Open Source Feature Flags, Experimentation, and Product Analytics - growthbook/growthbook
2021 · github.com · its alternatives →
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The AI-powered verification platform for high-stakes decisions. Fast, accurate background checks at scale.
2017 · engineering.checkr.com · its alternatives →
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Monitoring for websites, APIs, and cron jobs
2024 · webgazer.io · its alternatives →
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Why? - Decouple application deployment from releases How it works: - Make changes to your features and segments (YAMLs) via Pull Requests - Generate datafile (JSON file) in CI/CD workflow and upload to your CDN - Fetch datafile in your application runtime and consume with SDKs Supports: - Feature flags: boolean flags - Experimentation: a/b tests - Segments: targeting traffic with conditions - Variables: namespaced under each feature and conditional - Gradual rollouts: avoid big bang releases, go from 0% to 100% - Consistent bucketing: same user sees same variation - Multiple…
2023 · featurevisor.com · its alternatives →
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FeatureHub▲62Feature flags and remote config for devops teams
2023 · featurehub.io · its alternatives →
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Dorkly is a free open source Feature Flag backend for LaunchDarkly SDKs. It uses simple yaml files stored in GitHub as the source of truth. Full disclosure: made by a former LaunchDarkly employee + current fan.
2024 · github.com · its alternatives →
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Hi HN, I'm the creator of FFlags. I built this because I wanted a feature flagging system that gave me the performance and reliability of an enterprise-scale solution without the months of dev time or the vendor lock-in. The core ideas are: 1. Feature Flags as Code: You define your flag logic in TypeScript. This lets you write complex rules, which felt more natural as a developer myself than using a complex UI for logic. 2. Open Standard: The platform is built on the OpenFeature standard (specifically the Remote Evaluation Protocol). The goal is to avoid vendor lock-in and the usual…
2025 · fflags.com · its alternatives →
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LaunchDarkly provides simple, scalable feature flag & toggle management (feature management) for the modern enterprise. Eliminate risk, deliver value.
2017 · featureflags.io · its alternatives →
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LaunchDarkly helps teams safely manage code and AI agents in production with feature flags, progressive delivery, automated rollback, and runtime control.
2016 · launchdarkly.com · its alternatives →
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Beautiful, cross-platform & open-source tools for debugging, testing and building with HTTP(S), on Windows, Linux & Mac.
2019 · httptoolkit.tech · its alternatives →
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ServiceRadar is an open-source platform for distributed, secure network management and observability, scaling to 100k+ devices. Born from frustration with complex traditional NMS tools like Zabbix, it bridges legacy (SNMP/syslog) and modern (gNMI, OTLP) protocols for cloud-native environments. We built ServiceRadar to simplify monitoring hybrid telecom networks, evolving it into a Kubernetes-native solution with Helm and Docker support. It uses mTLS with SPIFFE/SPIRE, NATS JetStream for event streaming (90M+ EPS), and SRQL for intuitive queries. Integrated with OpenTelemetry,…
2025 · github.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →