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Best Feature Flag & Experimentation Platforms in 2026

These platforms let teams manage feature releases and test changes across software projects. Use this list to compare hosted and self-hosted tools while watching costs.

  1. 1

    Flagsmith

    Free plan Open source AndroidAPIiPhone+5

    Flagsmith combines controlled rollouts with remote configuration and several deployment choices.

    9.1 Free plan · paid from $40/mo (annual) · 14-day trial Visit site
  2. 2

    GrowthBook

    Free plan Open source AndroidAPIExtension+3

    Choose GrowthBook for warehouse-based experimentation and feature management with a choice of cloud or self-hosted deployment.

    9.0 Free plan · paid from $40/user/mo Visit site
  3. 3

    ConfigCat

    Free plan AndroidAPIExtension+4

    ConfigCat offers feature management controls across a wide SDK range, with a free plan and several paid tiers.

    7.7 Free plan · paid from $110/mo Visit site
  4. 4

    DevCycle

    Free plan AndroidAPIExtension+5

    DevCycle combines feature flag management, staged releases, and experimentation with broad SDK coverage. Compare the Free usage limits with Business allowances and overage charges before committing.

    7.6 Free plan · paid from $500/mo (annual) Visit site
  5. 5

    FeatBit

    Free plan APISelf-hostedWeb

    FeatBit combines feature flags, experiments, and multiple deployment choices, including self-hosting. Teams should compare the Cloud MAU allowances and self-host plan costs with their requirements.

    7.4 Free plan · paid from $3,999/yr Visit site
  6. 6

    Flipt

    Free plan APILinuxMac+3

    Flipt offers a free Git-oriented feature flag workflow and a paid Pro plan with additional integrations and secrets management.

    7.4 Free plan · paid from $200/mo · 14-day trial Visit site
  7. 7

    LaunchDarkly Experimentation

    Free plan AndroidAPIiPhone+1

    LaunchDarkly Experimentation offers varied experiment types, statistical methods, and warehouse connections.

    7.1 Free plan · paid from $8.33/mo (annual) · 14-day trial Visit site
  8. 8

    PostHog

    by PostHog
    Free plan AndroidAPIiPhone+5

    PostHog combines analytics, session replay, feature management, and data movement in one product suite.

    7.0 Free plan Visit site
  9. 9

    Statsig

    Free plan AndroidAPIExtension+3

    Statsig combines testing, release controls, and product analytics in one platform, with a free Developer plan and Pro at $150 a month.

    6.9 Free plan · paid from $150/mo Visit site
  10. 10

    Harness Continuous Delivery

    Free plan Web
    6.3 Free plan Visit site
  11. 11

    Kameleoon

    Free trial AndroidAPIiPhone+1

    Choose Kameleoon if your teams need experimentation across web, back-end, and mobile, with feature rollout controls and integrations.

    6.1 From $495/mo · 30-day trial Visit site
  12. 12

    CloudBees Feature Management

    by CloudBees
    Paid
    4.4 Visit site
  13. 13

    Firebase Remote Config

    by Google
    Paid
    4.2 Visit site
  14. 14

    Harness Feature Flags

    by Harness
    Paid
    4.0 Visit site
  15. 15

    IBM Cloud App Configuration

    by IBM
    Paid
    3.9 Visit site
  16. 16

    Optimizely Feature Experimentation

    by Optimizely
    Paid
    3.8 Visit site
  17. 17

    Split

    by Split
    Paid
    3.7 Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Check whether a tool has a free plan, free trial, or open-source code, then review its licence, supported platforms, and paid pricing. Supported environments include web, API, Android, iOS, self-hosted deployments, and macOS.

Questions

How do feature flag and experimentation platforms work?

They provide tools for managing feature flags and running experiments across software projects.

Can I use a free plan?

ConfigCat, DevCycle, FeatBit, Flagsmith, Flipt, GrowthBook, and Harness Continuous Delivery are among the entries with free plans.

Are open-source options available?

Some entries provide open-source code. Check the licence and self-hosting terms before adopting one.

Which tools offer free trials?

Flagsmith and Flipt advertise 14-day trials, while Kameleoon advertises a 30-day trial.

Which environments do these tools support?

The listed tools support web, API, Android, iOS, self-hosted environments, and macOS. Check the specific tool for your target environment.

Does Kameleoon have a free plan?

Kameleoon is listed as paid, with pricing from $495 per month and a 30-day trial.

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