Best Feature Flagging Tools in 2025

What's the best feature flagging tool? Not all feature flagging tools are the same. While they all generally help with de-risking deployments, it’s important to consider the use-cases they’re optimizing for. This can be the difference between a solution that works for you, and one that gets in your way or slows you down. In this article we outline some options for the best feature flagging tool for B2B SaaS, B2C & eCommerce, or complex pricing.

Best feature flagging tool for B2B SaaS: Bucket

If you’re ever used a feature flagging tool for a B2B SaaS product you might have noticed things feel kind of awkward. That’s because most feature management solutions are built around e-commerce use-cases like A/B experiments and optimizing checkout funnels. So when it comes to B2B SaaS, a lot of product choices feel off.

Take gating a feature for companies with a certain plan, for example. A common task in B2B SaaS where your customers are subscribers, not one-time shoppers. In most feature flagging tools you need to fumble around with lists of UUIDs. That’s because they assume you want to gate things for individual users, not whole companies.

It doesn’t stop there, though. You end up paying for A/B experimentation features that you don’t use because you likely don’t have enough volume to conduct A/B experiments with statistical significance. Even if you did, building a SaaS product is about taste. You’re optimizing for overall product UX, not isolated user journeys. It’s too slow to A/B test your way to a decision. You can move much faster using qualitative feedback from customers and your own intuition instead.

That’s why Bucket is the best feature flagging tool for B2B SaaS. It was built from the ground up with SaaS in mind. So companies are a first-class citizen. Entitlements are built into features and companies, and you can bring feedback into your workflow with built-in feedback surveys and adoption tracking associated with features.

Other alternatives include Harness, Unleash, and ConfigCat. While not built-specifically for SaaS, with workarounds they’re an option to consider.

Best feature flagging tool for B2C & eCommerce: LaunchDarkly

Feature flags provide retailers with a practical way to personalize the shopping experience in real time. Platforms can adjust their interface to highlight a customer’s commonly purchased product categories and make the experience more relevant to that individual.

For first-time visitors, feature flags can activate features like introductory offers or navigation tips to help them get started. For returning customers, the platform can use shopping history to display tailored offers, increasing the chances of a purchase.

Localization is another useful application of feature flags, allowing content to be customized based on a user’s location or IP address. This could include showing prices in local currency or offering region-specific promotions, which can make the shopping experience feel more familiar and convenient.

A/B testing is an area where feature flags are particularly valuable. They allow platforms to test different versions of a page or feature with separate groups of users. For instance, an e-commerce site might compare a single-page checkout process with a multi-step alternative to see which performs better in terms of completion rates and time to purchase.

By analyzing the results, companies can make data-driven decisions to optimize for customer satisfaction and conversions. For eCommerce, LaunchDarkly is a great option. It offers tools for full-stack experimentation, including A/B/n testing, funnel optimization experiments, audience-based result filtering, and flexible metric design including clicks, pageviews, and conversion rates. With LaunchDarkly, teams can effectively measure and refine features to improve customer experiences over time.

Other alternatives include Statsig and Optimizely.

Best feature flagging tool for Complex Pricing: Schematic

If you have complex pricing and packaging then you’re going to want a solution that sits between your app and your billing system to avoid managing code to handle all the different billing configurations and exceptions.

If most of your customers have custom pricing, or you have usage-based pricing then an option like Schematic might be the right choice for you. Schematic supports metering. In particular, the ability to define, enforce, and report on usage-based pricing in your product. It tracks data about limits and utilization on a per feature and per customer basis.

Another alternative is Stigg. It doesn’t use feature flags, but still provides flexible entitlements management that’s abstracted away from code.

Many feature flagging tools try to cater to every use-case. This results in solutions that can be slow and clunky to use, requiring workarounds for common tasks. So when considering what’s the best feature flagging tool, be sure to consider the use-cases and challenges your business model presents and pick the right option for you.