Meta Box is unusual among custom field plugins because its core stays small and its extensions cover the rest: MB Custom Table for non-meta storage, MB Frontend Submission for public forms, MB Views for templating, MB Builder for a visual UI, MB Custom Post Type for CPT registration. Each extension writes its own data in its own place. The standard WordPress admin lists what is installed; it does not surface the data as columns.

SleekView pulls Meta Box field values from postmeta, termmeta, usermeta and any tables registered through MB Custom Table. The same registered field definitions Meta Box uses for the editor drive the columns, so renames and additions stay in sync. Frontend submissions become a real list table with form metadata and field values inline. Custom-table-backed datasets are queried directly, which keeps reads fast at scale.

Inline edits write through Meta Box's update functions so registered save hooks continue to fire. The same dataset that powers the table can be switched to a kanban or feedback view, which is useful when a single column needs to drive workflow.

Meta Box's design choice to keep its core minimal and push features into extensions is part of why it scales so well on large builds. The cost is that no single admin screen reflects the full picture. A developer can list installed extensions, an editor can see one post at a time, MB Frontend Submission can list its own entries, MB Custom Table can list its own rows.

None of it adds up to a single sortable, filterable, inline-editable table. SleekView reads the storage paths Meta Box uses, postmeta and custom tables alike, and renders each field group as a real list table. The same registered field group powers both the editor and the view, so the table follows the model rather than lagging behind it.