Ruven

This plugin registers a custom post type for portfolio items and a taxonomy for portfolio types.
Selected themes by Ruven provide templates to display portfolio items. 
In other themes you most likely have to add them by yourself.

Ruven Themes: Portfolio

RT Portfolio enables a "Portfolio" post type and "Type" taxonomy.

Mohimenul Islam

MOHI CPT is a lightweight, performance-first WordPress plugin built specifically to handle structural Portfolio layouts and Testimonial sliders without plugin bloat. Designed keeping ultra-fast load times and clean semantic markup in mind, it provides smooth dashboard control toggles and secure front-end rendering.
<h4>Key Features</h4>
<ul>
<li>Performance First: Ultra-clean codebase ensuring under 2-second site asset loading.</li>
<li>Dual Showcase: Registers standard-compliant ‘Portfolio’ and ‘Testimonial’ custom post types.</li>
<li>Smart Assets Enqueueing: Conditional script & style loading ensures Bootstrap assets only load where needed, keeping the rest of the site clean.</li>
<li>Isolated Admin Scope: Customized options layout panel with robust view control toggles built specifically to avoid global CSS style bleed.</li>
<li>Shortcode-Ready: Easily display your Portfolios or Testimonials inside any pages, sections, or popular page builders using shortcodes.</li>
<li>Translation Ready: Full internationalization integration adhering to secure WordPress core localization patterns.</li>
</ul>
<h3>Third-Party Resources & Bundled Assets</h3>
This plugin bundles localized copies of the following external open-source framework assets to ensure modern grid structure rendering and iconography support:
<ul>
<li>
Bootstrap Framework (Core CSS & JS Bundle)
<ul>
<li>Source: https://github.com/twbs/bootstrap</li>
<li>License: MIT License (https://github.com/twbs/bootstrap/blob/main/LICENSE)</li>
<li>Version Bundled: 5.3.8</li>
</ul>
</li>
<li>
Bootstrap Icons (Font Assets & Framework CSS)
<ul>
<li>Source: https://github.com/twbs/icons</li>
<li>License: MIT License (https://github.com/twbs/icons/blob/main/LICENSE)</li>
<li>Version Bundled: 1.11.3</li>
</ul>
</li>
</ul>

MOHI CPT

Easily register high-performance Custom Post Types for Portfolios and Testimonial showcases, tailored perfectly for the MOHI ecosystem.

Ruven Themes: Portfolio vs MOHI CPT