WordPress.org

The visual editor widget for WordPress.

By: Black Studio, Marco Chiesi, and Francesco Canovi.

Share buttons for WordPress including the AddToAny sharing button, Facebook, Twitter, Google+, Pinterest, WhatsApp, many more, and follow icons too.

By: micropat and addtoany.

Enables replacing attachment files by simply uploading a new file in the media library edit view.

By: mungobbq.

SEO Friendly Images automatically adds alt and title attributes to all your images improving traffic from search engines.

By: Vladimir Prelovac.

Make your website look beautiful and crisp on modern displays by creating and displaying retina images. WP 4.4+ is also supported and enhanced.

By: Jordy Meow.

Converts Cyrillic, European and Georgian characters in post, page and term slugs to Latin characters.

By: Atrax, Sergey Biryukov, karevn, and webvitalii.

What this plugin does is to reveal most removed IDs on admin pages, as it was in versions prior to 2.5.

By: wpseek.

"Add From Server" is a quick plugin which allows you to import media & files into the WordPress uploads manager from the Webservers file

By: Dion Hulse.

Download Monitor is a plugin for uploading and managing downloads, tracking downloads, and displaying links.

By: Never5, Barry Kooij, Mike Jolley, and Harish Chouhan.

A responsive image lightbox for WordPress galleries & Foo Gallery

By: bradvin, fooplugins, and Freemius.

A simple widget that makes it a breeze to add images to your sidebars.

By: Cedaro and Brady Vercher.

Posts a Twitter update when you update your WordPress blog or add a link, with your chosen URL shortening service.

By: Joe Dolson.

Customise columns on the administration screens for post(types), pages, media, comments, links and users with an easy to use drag-and-drop interface.

By: Codepress, Tobias Schutter, David Mosterd, Jesper van Engelen, and อื่น ๆ.

Smart Youtube is a professional WordPress Video plugin that allows you to easily insert videos/playlists into your post from all major video services.

By: Vladimir Prelovac.

Adds Colorbox/Lightbox functionality to images, grouped by post or page. Works for WordPress and NextGEN galleries. Comes with different themes.

By: techotronic.

No. 1 Podcasting plugin for WordPress, with simple & advanced modes, players, subscribe tools, and more! Supports iTunes, Google Play, Stitcher...

By: Angelo Mandato and blubrry.

Easily set site favicon and even rotate through multiple icons

By: Archetyped.

A Compact WP Audio Player Pluign that is compatible with all major browsers and devices (Android, iPhone, iPad)

By: Tips and Tricks HQ and mbrsolution.

An admin interface to control the default comment and trackback settings on new posts, pages and custom post types.

By: Seth Alling.

Enhances the Media Library; powerful [mla_gallery], taxonomy support, IPTC/EXIF/PDF processing, bulk/quick edit actions and where-used reporting.

By: David Lingren.

SEO Plugin By Squirrly is for the NON-SEO experts. Get Excellent SEO with Better Content, Ranking and Analytics. For Both Humans and Search Bots.

By: Calin Vingan, Florin Muresan, and Nagy Paul Sorel.

Text Domain: easy-watermark Allows to add watermark to images automatically on upload or manually.

By: szaleq.

Easy, Flexible Audio for WordPress.

By: simon.ward.

Adds pseudo oembed support for PDF documents

By: Pat Hawks and dirtysuds.

Copies files to Amazon S3 as they are uploaded to the Media Library. Optionally configure Amazon CloudFront for faster delivery.

By: Brad Touesnard and Delicious Brains Inc..

A Photo Gallery for WordPress providing NextGEN legacy compatibility from version 1.9.13

By: wpready.

Associate images from your media library to categories, tags and custom taxonomies.

By: Michael Fields, Ben Huson, and Jamie McHale.

Create custom "Shortcodes" with HTML, Javascript snippets stored in it and use that shortcode within posts and pages. Check the demo video.

By: vaakash.

Auto-rename the files when titles are modified and update and the references (links). Manual Rename is a Pro option. Please read the description.

By: Jordy Meow.

Add albums, photo, audio/video upload, privacy, sharing, front-end uploads & more. All this works on mobile/tablets devices.

By: rtCamp, Mangesh Parte, Sanket Parmar, pranalipatel, Jignesh Nakrani, and อื่น ๆ.