See how Abby's open-source feature flags, remote config, and A/B testing tools work for developers, including pricing plans, features, pros and cons.
Abby is an open-source feature flagging, remote configuration, and A/B testing service built specifically for developers, with an emphasis on type-safe SDKs for modern JavaScript frameworks.
It supports React, Next.js, Svelte and SvelteKit, Remix, and Angular, with server-side rendering and static site generation compatibility, and ships browser devtools for debugging flag and config values in real time.
The product is fully open source and can be self-hosted, in addition to being available as a hosted SaaS product, giving teams flexibility over where their data lives.
Feature flags let teams toggle functionality on or off from a dashboard, useful for gradually rolling out features or quickly disabling something that breaks in production.
Remote config allows configuration values to be changed dynamically without a code deploy, and can be refined using user segments and conditional targeting rules.
Built-in A/B testing lets teams measure the impact of different flag or config variants directly within the same platform used for flagging.
Fully type-safe SDKs reduce the risk of runtime errors from mismatched flag names or types across a codebase.
Multiple environments per project support separate flag and config states for development, staging, and production.
European data hosting and a no-tracking, no-marketing-cookies policy appeal to privacy- and GDPR-conscious teams.
Abby uses a freemium, per-project pricing model. The Free plan includes 1,000 events per month, one A/B test, three feature flags or remote configs, and five environments.
The Starter plan is 12 USD per month per project, and the Startup plan is 89 USD per month per project, scaling up to 10,000 monthly events, 10 A/B tests, and 30 feature flags or remote configs.
Pro and Enterprise tiers are available on request, offering higher event volumes, more concurrent A/B tests, and, at the Enterprise level, unlimited events, tests, feature flags, and environments.
It is used for feature flagging, remote configuration, and A/B testing in modern JavaScript applications, with SDKs for frameworks like React, Next.js, and Svelte.
Yes, Abby has a free plan with limited monthly events, one A/B test, three feature flags or remote configs, and five environments.
Paid plans start at 12 USD per month per project (Starter), with a Startup plan at 89 USD per month per project and custom Pro and Enterprise pricing for larger needs.
Yes, Abby is fully open source with its code published on GitHub, and it can be self-hosted.
Abby provides SDKs for React, Next.js, Svelte and SvelteKit, Remix, and Angular, with server-side rendering and static site generation support.
Abby states it does not track personalized user data and does not use marketing cookies, and hosts data in Europe.
Abby is a smaller, developer-focused, open-source feature flagging and A/B testing tool, while AB Tasty is a larger, established enterprise digital experience optimization platform; they are separate, unrelated companies.