graemehoffman

DIVINER is a free and open-source WordPress plugin for small to mid-size institutions with public archiving needs. DIVINER 1.0 is a digital platform built for archiving, organizing, and presenting large amounts of photographs, audio, video, and documents – or all four! DIVINER might be right for your organization if you have a collection of humanities materials you would like to share with the public (for example, a collection of 3,000 photographs of a large farm in the early 1900s; or thousands of audio clips and interviews related to immigration in Wisconsin).
This plugin creates a new Archive Item content type with an admin interface for adding meta fields. The fields can be of several different flavors: Text, Date, Advanced Detail Field, Taxonomy, and Select. During the initial setup you set up these fields and config them. Once setup is complete you can start adding archive items as documents, photos, videos, audio, or mixed format with all your intended meta information. Each archive item single page displays the main media elements before the content and then all the meta field data after the content.
The plugin also provides a shortcode ([diviner_browse_page]) which can be added to any page and which generates a responsive real time multifacet search experience for exploring your archive. This Browse experience includes a search bar, and sorting options, as well as search facets per each field. Search returns are updated in real time and appear in a paginated grid.
To improve performance, this plugin is designed to work well with the ElasticPress plugin.
Find out if Diviner is right for your project and access detailed installation instructions at <a href="https://ncpr.github.io/diviner-wp-archive-theme/" rel="nofollow ugc">https://ncpr.github.io/diviner-wp-archive-theme/</a>.

Diviner Archive

Set up a basic archive. Manage your meta data. Add video or audio or photos as needed. Rejoice.

pixelgrade

George Olaru

Andrei Lupu

With <a href="https://github.com/pixelgrade/pixfields" rel="nofollow ugc">PixFields</a> you can have a custom fields visual manager.
Note: this plugin does not add any style to the output of custom fields. Its just adding metadata and offers a way to overwrite the html from the theme. 
The theme should style the output of the metadata.

PixFields

PixFields offers you a nice interface to add custom metadata into your favorite post type.

Diviner Archive vs PixFields