A/B testing? PostHog does that.
A/B testing, multivariate testing, and statistical significance

I'm always trying to find the next experiment to run with PostHog. Every day, I'm checking reports and trying to push the boundaries by testing new hypotheses.

Taric Santos de Andrade
Product Manager, Vendasta

Customizable goals
Set the intended outcome that indicates a successful experiment
Goal types
Choose your preferred outcome between a trend or conversion funnel
Secondary metrics
Track multiple goals or check that your experiment doesn’t have unintended effects elsewhere
Statistical significance
Set the minimum acceptable threshold required to declare a winning variant

Targeting & exclusion rules
Run tests based on user location, user property, cohort, or group. You can also set exclusions to prevent groups of users from being shown an experiment.

Recommendations
Based on your intended goal and level of statistical significance, PostHog can suggest an experiment’s duration, sample size, and confidence in a winning variant during a test.

Built on Feature Flags
All the benefits of feature flags with added functionality around stat-sig experiments
JSON payloads
Modify website content per-variant without additional deployments
Split testing
Automatically split traffic between variants
Multivariate testing
Test up to 9 variants against a control
Dynamic cohort support
Add new users to an experiment automatically by setting a user property
Pairs with...
PostHog products are natively designed to be interoperable using Product OS.
Product analytics
Run analysis based on the value of a test, or build a cohort of users from a test variant
Session replay
Watch recordings of users in a variant to discover nuances in why they did or didn’t complete the goal
Feature flags
Make changes to the feature flag the experiment uses - including JSON payload for each variant
Docs & resources
Visit docsA/B testing docs
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Roadmap
Here's what the Experimentation Team is building next.
Feature flag support for strings (JSON)
Progress
Users & recordings linked to feature flags
We want to make it easier for those who use feature flags to get information on users attached to a particular feature flag, and gather more information on those users' experience through session recordings.
Progress
The experimentation team
Here are the people bringing you experimentation.
67% of this team prefer pineapple on pizza
Eric Duong
Team lead
Software Engineer
Li Yi Yu
Full Stack Engineer
Neil Kakkar
Software Engineer

PostHog does that.
Now that you know PostHog does a/b testing, check out what else PostHog can do.