The strongest Advanced Custom Fields alternative for most developer sites is CMB2, a free, stable, code-first field framework without the paid tier of Advanced Custom Fields. If you want a visual builder with no cost, Pods is the best free pick, and Secure Custom Fields offers an ACF-compatible option maintained in the official repository. We ranked these from our index of 55,000+ WordPress plugins.

Why people switch from Advanced Custom Fields

• Developers who prefer version-controlled field definitions in code move to CMB2 or Carbon Fields.
• Teams wanting an open, official ACF-compatible option after recent ownership disputes move to Secure Custom Fields.
• Sites needing custom post types and fields together, for free, move to Pods.
• Those wanting a lighter core with many field types move to Meta Box.

CMB2 – Code-first custom fields

CMB2 is a developer-oriented metabox and fields library where you define fields in PHP, fully free and open source. Against Advanced Custom Fields, it is completely free and fits teams that prefer version-controlled configuration in code. What it does not do: it has no visual builder, so you register everything in PHP, which puts it out of reach for non-developers.

Choose CMB2 if you are a developer who prefers defining fields in code, for free.

Secure Custom Fields – Open ACF-compatible fork

Secure Custom Fields is the WordPress.org fork of ACF, offering a drop-in, compatible field builder maintained in the official repository. Against Advanced Custom Fields, it gives an open, community-maintained path with a familiar interface. What it does not do: as a fork born of a dispute, its long-term feature parity with commercial ACF is uncertain, and Pro-equivalent features are not guaranteed.

Choose Secure Custom Fields if you want an open, ACF-compatible builder from the official repository.

Meta Box – Lightweight, extensible fields

Meta Box from eLightUp is a lightweight, developer-friendly custom fields framework with a large range of field types and extensions. Against Advanced Custom Fields, its core is light and strong for custom post types. What it does not do: the free core is code-based, and the visual builder plus many field types and features come as paid extensions.

Choose Meta Box if you want a light core with a wide catalogue of field types via extensions.

Pods – Content types and fields, free

Pods is a community-driven plugin that creates custom post types, taxonomies, and fields together through a UI, entirely free. Against Advanced Custom Fields, it bundles content-type creation and fields at no cost. What it does not do: its interface is less polished and its learning curve steeper than ACF’s, so early setup takes more patience.

Choose Pods if you want to build content types and fields together without paying.

carbon-fields – Fields bundled into code

Carbon Fields from Htmlburger is a code-based fields framework aimed at developers who bundle field definitions into themes and plugins. Against Advanced Custom Fields, it offers a clean API and ships fields with your code rather than the database. What it does not do: it has no admin UI and a smaller community, so documentation and support are thinner.

Choose carbon-fields if you are a developer bundling field definitions into a theme or plugin.

When to stay on Advanced Custom Fields

Stay on Advanced Custom Fields if you value its polished visual builder, its enormous library of tutorials, and the huge number of themes and plugins that integrate with it. For non-developers especially, nothing else matches that ease. Unless you specifically want code-first fields or an open fork, the ACF ecosystem is hard to leave behind.

How we ranked these

Every plugin here is scored by the WPS Score, a single 0 to 10 rating built from 21 signals covering maintenance, support responsiveness, compatibility, performance, and ratings quality across our index of 55,000+ plugins. Rankings are derived from that data, not editorial preference, and no plugin author can pay to change a score. How the WPS Score works.

Frequently asked questions

What is the best free alternative to Advanced Custom Fields?

Pods is a strong free alternative because it lets you create custom post types, taxonomies, and fields together through a visual interface at no cost. For developers who prefer code, CMB2 and Carbon Fields are fully free field frameworks.

What is Secure Custom Fields?

Secure Custom Fields is a fork of Advanced Custom Fields created and maintained in the official WordPress.org repository following a dispute over ACF. It aims to be a drop-in, compatible replacement, though its long-term feature parity with commercial ACF is not guaranteed.

Do I need to know code to replace ACF?

Not necessarily. Pods and Secure Custom Fields offer visual interfaces similar to ACF, so non-developers can use them. CMB2 and Carbon Fields, by contrast, require defining fields in PHP and are aimed at developers.

The verdict

The best all-round Advanced Custom Fields alternative for developers is CMB2, while Pods wins for a free visual builder and Secure Custom Fields for an open ACF-compatible fork. Given ACF’s polished builder and vast ecosystem, staying on Advanced Custom Fields remains a strong choice.

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