One of the many benefits of working with WordPress is the amazing number of quality plugins that are absolutely free of charge. If you run a company, where you like to show pictures of your products, these particular plugins will be of interest to you. Each plugin creates the photo gallery a bit differently — jquery slideshows, flash slideshows, automatically from your flickr set — which you choose is purely a matter of preference.
NextGen Gallery
This is probably the most popular gallery plugin for WP, and for good reason. The NextGen Gallery offers the most options of any of the plugins on this list. You can choose a template for each gallery, assign each gallery an author, create specific image sets and albums that are not tied to a specific post, use your choice of JavaScript displays (Shutter, Thickbox, Lightbox or Highslide), dynamically add a watermark to your picsand so much more… It is truly a great plugin.
WP-Cycle
Another flexible plugin, this one is powered entirely by jQuery. Which is really nice for sites that need the speed of JavaScript. The plugin allows you to upload images from your computer, which will then be used to generate a jQuery Cycle Plugin slideshow of the images.The slideshow is set to pause when the user hovers over an image, giving them ample time to click the link.
WP-Cycle uses the built in media uploader from WordPress, making it easy for even non-techies to use.
Cleaner WordPress Gallery Plugin
Cleaner Gallery gives you complete control over your WP galleries. It provides a valid XHTML solution and supports many different Lightbox-type image scripts. Because it use XHTML you can use CSS to easily style the galleriex. Nice and clean!
FlippingBook
This is definitely a slick plugin. It will create a book that has flipping pages when you change slides. It’s very convenient to look through the pictures, leafing through the pages. You just have to double-click to print images out. This is a real interactive book which is nice and easy to use when you turn its pages.
Flickr Photo Album
A favorite among bloggers. This Flickr plugin for WordPress will allow you to pull in your Flickr photosets and display them as albums on your WordPress site. There is a pretty simple template provided, but you can customize the templates 100% to match the look and feel of your own site. And if you want, you could also hook it up with Lightbox or any other number of display libraries.
Picasa Photos
Picasa Photos uses RSS to fetch photos from your Picasa account and display them randomly. You can put a gallery in a post, page or sidebar widget. The plugin recently underwent a complete overhaul. It now has its own settings page and integrates with thickbox styling.
Summary
These are just a few of the great gallery plugins that are available. A simple Google search will show you at least 20 or more. However, if you have certain plugin that you absolutely love, list in the comments below so the rest of us can check it out.