Alternatives to Flagsmith
Open-source feature flag and remote config platform.
Flagsmith ranks #1 of 8 in Feature flag platforms, with an Alt Score of 100. It is licensed under BSD-3-Clause, open source with paid hosting from $45/month and available on the web. 13 of 13 checklist rows are verified against a public source.
Flagsmith is an open-source feature flag, remote config, and A/B testing platform; self-hostable or cloud.
Engineering teams that want feature flags, remote config, and progressive rollouts without vendor lock-in, including regulated organizations (banking, healthcare, government) that need to self-host or keep flag data in their own infrastructure.
Boolean and multivariate feature flags with remote configuration, user segmentation and identity-level overrides, percentage-based staged rollouts and kill switches, A/B/MVT testing, audit logs, change-request approval workflows, SDKs for 15+ languages/frameworks with local (in-process) flag evaluation, and integrations with tools like Datadog, Amplitude, Segment, Jira, and Slack.
Teams create flags and segments in the Flagsmith dashboard (cloud SaaS, private cloud, or self-hosted via Docker/Kubernetes/Helm), then evaluate them from client and server SDKs; server SDKs can run in Local Evaluation Mode using a ported flag-evaluation engine so decisions happen in-process without a network call, while an Edge API/Edge Proxy provides low-latency global evaluation for cloud deployments.
Where Flagsmith stands out
Verified capabilities most alternatives don't have.
Why people leave Flagsmith
Dashed reasons are sourced facts; the rest are opinions. Vendors can dispute.
Sign in to add a reason — new reasons go through moderation before appearing.
Ranked alternatives
Ordered by Alt Score. Click any score to see the breakdown.
Unleash is an open-source feature flag and management platform with gradual rollouts, targeting, and edge evaluation; self-hostable or hosted.
GrowthBook is an open-source feature flag and experimentation platform with warehouse-native A/B testing; self-hostable or cloud.
DevCycle is a feature flag management platform built on OpenFeature with edge and local evaluation, targeting, and gradual rollouts.
LaunchDarkly is a feature management platform for progressive rollouts, targeting, experimentation, and kill switches across server and client SDKs.
ConfigCat is a hosted feature flag and configuration management service with targeting, percentage rollouts, and SDKs for many languages.
Split is a feature delivery and experimentation platform combining feature flags with statistical A/B testing and metrics, now part of Harness.
Feature comparison
Rows come from the Feature flag platforms checklist (17 rows). Human-verified cells only. ? means the value has not been verified.
| Feature flag platforms checklist | Flagsmith | Unleash | GrowthBook | DevCycle | LaunchDarkly | ConfigCat |
|---|---|---|---|---|---|---|
| Pricing model | ||||||
| Starts at | ||||||
| License | ||||||
| Platforms | ||||||
| Open source | ||||||
| Self-hostable | ||||||
| Percentage / gradual rollouts | ||||||
| User targeting & segments | ||||||
| A/B testing / experimentation | ||||||
| Kill switches | ||||||
| SDKs (server + client) | ||||||
| Local evaluation / edge | ||||||
| Audit logs | ||||||
| Approval workflows | ||||||
| Analytics integration | ||||||
| Free tier flag limit | ||||||
| SSO / SAML |
Every fact and feature listed for Flagsmith is verified against its own pages. Each alternative is sourced on its own page.
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License BSD-3-Clause verified 2026-07-17
LICENSE.md's text is the standard BSD 3-Clause license; README.md names it explicitly in prose (not just a badge): 'The majority of our platform is open source under the BSD-3-Clause license. A small
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above c
https://raw.githubusercontent.com/Flagsmith/flagsmith/main/LICENSE.md -
Pricing model OSS + paid hosting verified 2026-07-17
With our core functionality being open, you can use our open-source feature flag and remote config management platform no matter what. Enterprise-level governance and management features are available
https://raw.githubusercontent.com/Flagsmith/flagsmith/main/README.md -
Starts at $45/month verified 2026-07-17
$45/mo billed monthly, or $40/mo if billed annually; this is the cheapest paid cloud tier above Free.
Start-Up Feature flags for small teams $ 45 /mo 14 Day Free Trial
https://www.flagsmith.com/pricing -
Platforms Web verified 2026-07-17
mainEntity": { "@type": "SoftwareApplication", "name": "Flagsmith", "applicationCategory": "DeveloperApplication", "operatingSystem": "Web, Cloud, Self-Hosted"" — Flagsmith is a web-based SaaS/self-hosted dashboard plus client & server SDKs across many languages; SDKs aren't part of the platforms enum so only Web is recorded.
https://www.flagsmith.com/pricing -
Status active verified 2026-07-17
pushed_at": "2026-07-17T01:58:15Z", "archived": false" — Repository is not archived and had a commit pushed the same day as this research (2026-07-17); 6,452 stars.
https://api.github.com/repos/Flagsmith/flagsmith -
Open source Yes verified 2026-07-17
Core functionality—feature flags, remote configuration, user targeting, multivariate flags, and targeting rules—is BSD-3-Clause licensed, free to use in production, and available to inspect, fork, and
https://www.flagsmith.com/open-source -
Self-hostable Yes verified 2026-07-17
Flagsmith is an open-source feature flag service you can self-host on your premises or in your cloud.
https://www.flagsmith.com/self-hosted -
Percentage / gradual rollouts Yes verified 2026-07-17
For example, test a new feature by showing it to 5% of your user base Gradually increase the percentage of users that see the feature based on results
https://www.flagsmith.com/segmentation -
User targeting & segments Yes verified 2026-07-17
Use segments to group users based on a set of rules Control feature flags and remote config for your segments
https://www.flagsmith.com/segmentation -
A/B testing / experimentation Yes verified 2026-07-17
A/B and multivariate testing (percentage-split variant flags) is a native, paid feature from the Start-Up tier ($45/mo) up; not included on Free. A separate 'Experimentation' add-on with a built-in Ba
Everything in Free, plus: ... Scheduled Flags Two-Factor Authentication (2FA) A/B and MVT Testing 3rd Party Integrations
https://www.flagsmith.com/pricing -
Kill switches Yes verified 2026-07-17
Wrap high-profile features in flags so you can disable buggy code at its source with the flip of a (kill) switch
https://www.flagsmith.com/reduce-risk-with-feature-flags -
SDKs (server + client) Yes verified 2026-07-17
Android / Kotlin ... Javascript ... React ... Next.js ... Flutter ... React Native ... iOS / Swift ... Java ... NodeJS ... Python ... .NET ... Ruby ... PHP ... Go ... Rust ... Elixir
https://www.flagsmith.com/sdks -
Local evaluation / edge Yes verified 2026-07-17
Server Side Local Evaluation Our Server Side SDKs can operate in Local Evaluation Mode. We have ported our Flag Evaluation Engine to every Server Side language SDK that we support. Local Flag Evaluati
https://www.flagsmith.com/sdks -
Audit logs Yes verified 2026-07-17
Audit logs ship as part of 'Governance Features' starting on the Scale-Up tier ($300/mo); not included on Free or Start-Up.
Everything in Start-Up, plus: ... SAML/SSO Authentication Governance Features – Roles, Permissions, Change Requests, Audit Logs
https://www.flagsmith.com/pricing -
Approval workflows Yes verified 2026-07-17
Change Requests (approval workflow) is a full feature, gated to the Scale-Up/Enterprise tiers.
Change Requests Prevent accidental changes to critical flags with a built-in approval workflow. Before a flag goes live, another team member must sign off, keeping releases controlled without creating
https://www.flagsmith.com/self-hosted -
Analytics integration Yes verified 2026-07-17
You can automate AB tests by connecting the Flagsmith platform with Amplitude. ... Send your Identity flag states into Mixpanel for further downstream analysis. ... Send your Identity flag states into
https://www.flagsmith.com/integrations -
Free tier flag limit Yes verified 2026-07-17
Free tier has no cap on the number of feature flags (limit is on monthly API requests, not flag count).
Free plan includes: Up to 50,000 Requests Per Month* ... 1 Team Member Unlimited Feature Flags ... Unlimited Environments Unlimited Identities and Segments
https://www.flagsmith.com/pricing -
SSO / SAML Yes verified 2026-07-17
SAML/SSO Authentication is available starting on the Scale-Up cloud tier ($300/mo); Enterprise additionally offers LDAP + SCIM.
Everything in Start-Up, plus: ... SAML/SSO Authentication Governance Features – Roles, Permissions, Change Requests, Audit Logs
https://www.flagsmith.com/pricing
FAQ
Yes. DevCycle, LaunchDarkly and ConfigCat have a free tier or are fully free. Free-tier limits in the comparison table are verified and dated.
Unleash, GrowthBook and ConfigCat — every license claim links its source.