tokitam

WaffleDB is a no-code database management plugin for WordPress. You can define custom tables with any column structure directly from the admin dashboard, then create, read, update, and delete records through a built-in web interface or via REST API.
Features
<ul>
<li>Create custom tables with a flexible column structure</li>
<li>CRUD operations (create, read, update, delete) via web interface</li>
<li>Role-based access control (read / write / update / delete per table)</li>
<li>11 column types: text, textarea, int, float, date, datetime, URL, image URL, image upload, file upload, YouTube</li>
<li>CSV export</li>
<li>REST API with API token authentication</li>
<li>Shortcode support: <code>[waffledb table_id="X"]</code> and <code>[waffledb_item table_id="X" item_id="Y"]</code></li>
<li>DataTables integration for large datasets (switches to AJAX for 1,000+ records)</li>
</ul>
Limits
<ul>
<li>Up to 6 tables per site</li>
<li>Up to 15 columns per table</li>
</ul>

WaffleDB

Create and manage custom database tables in WordPress. Flexible columns, CRUD forms, REST API, CSV export, and shortcodes. No coding required.

Mantiq

<h3>Mantiq WordPress Workflow Automation Plugin</h3>
Mantiq allows you to craft customized workflows, without leaving your WordPress dashboard.
Achieve more in less time 
Save time and efforts through a rich set of features and functionality.
Adapt fast 
Easily customize your workflows to meet your business’ evolving needs.
Level up 
Extend Mantiq with custom actions to achieve unprecedented results.
For more details, please visit: <a href="https://wpmantiq.com/?utm_source=wp-org&utm_medium=description&utm_campaign=mantiq" rel="nofollow ugc">wpmantiq.com</a>.

Mantiq – Visual Backend & Workflow Builder For WordPress

Just did a quick test. UI is very slick and options available shows versatility in how this can be put to various use cases. Keep up the good work!

Slick and very promising

Mantiq is a workflow automation tool. It allows you to build the backend you need in your WordPress website with LEGO-like building blocks instead of  …

WaffleDB vs Mantiq – Visual Backend & Workflow Builder For WordPress