1. Gallery – Gallery is an open source project with the goal to develop and support leading photo sharing web application solutions.

With Gallery you can easily create and maintain albums of photos via an intuitive, web interface. Gallery works with several different image processing toolkits and is available in over 30 languages! You don’t need special privileges on your webserver to install, configure and maintain Gallery.
Photo management includes automatic thumbnail creation, image resizing, rotation, ordering, captioning, searching and more. Albums and photos can have view, edit, delete and other permissions per individual authenticated user for an additional level of privacy.
It’s great for communities – give accounts to your friends and family and let them upload and manage their own photos on your website!
You can easily customize Gallery to your needs. Latest version available for download is Gallery 3.0.4.
Gallery:
http://galleryproject.org/ 
---------------------------------------------------------------------------
2. Zenphoto - Zenphoto is a standalone gallery CMS. Zenphoto have everything you need for web media gallery management.

Zenphoto is more than just a gallery for images! It also has features like multimedia support for audio and video and is even capable of running your entire portfolio website including a news section (blog) and custom pages. This makes Zenphoto the ideal CMS for illustrators, artists, designers, photographers, film makers and musicians.
Features -Automatically generated thumbnails and sized-down images
-Upload via FTP or via the admin interface
-Upload images, albums (folders) or even zip-archives
-Comments on images and albums with powerful spam filters
-AJAX-powered edit-while-you-browse
-Video support for Flash Video (.flv), Quicktime (.mov) and 3GP (.3gp)
-Password protection for gallery and albums
-Watermarks for images
-Powerful search with boolean expressions
-Tags: Categorize you images with tags
-Image rating
-Dynamic albums: Generate albums from searches!
-Highly customizable theme engine
-rss for gallery, albums and comments
-Multiple administrataive users with varying rights
-Cruft free, search engine friendly URLs with mod_rewrite
Latest version available for download is Zenphoto 1.4.3.2. Its released under license GPL v.2.
Zenphoto:
http://www.zenphoto.org/ 
---------------------------------------------------------------------------
3. PhpWebGallery - PhpWebGallery became Piwigo on February 15th, 2009. Piwigo is a photo gallery software for the web that comes with powerful features to publish and manage your collection of pictures.

It supports numerous galleries of all sizes all over the world, from an individual ten-photos party to the images stock of an agency. This scalability is supported by smart browsing capabilities based on categories, tags and chronological search. Various extensions make Piwigo even more scalable and customizable to suit your own needs and desires.
Features Categories – organize your photos in your category tree, with no limit in depth.
Tags – describe photos and find all of them tagged with “night + Paris + John”.
Themes and Plugins- customize appearance with themes and add features with plugins.
Privacy – make your photos private and decide who can see each of them.
Piwigo is both web and photo standard compliant. Latest version available for download is Piwigo 2.4.3.
PhpWebGallery:
http://piwigo.org/ 
---------------------------------------------------------------------------
4. TinyWebGallery - The TinyWebGallery is a free php photo album / gallery that is very easy to install, extremely user friendly, does not need a database uses xml files but still has all the features you should expect and much more.
Features AJAX + Flash navigation with sliding image thumbnails
XML based – no database needed
TWG Admin to upload/manage images, manage
users, Color Manager, Configuration of TWG …
3 different slideshow types
Protected galleries
Text and image watermarks
Full video support
TWG Flash uploader
Frontend in 29, backend in 5 languages!
Fullscreen mode
Remote picture support
All features can be enabled/disabled/configured
Latest version available for download is TWG 1.8.1.
TinyWebGallery:
http://www.tinywebgallery.com/en/main.php 
---------------------------------------------------------------------------
5. Plogger - Plogger is the next generation in open-source photo gallery systems. A web application not bloated with superfluous features or complicated configuration settings. Plogger is a simple yet powerful tool — everything you need to share your images with the world. Plogger is your photos integrated into your website, a fully featured photo sharing package with an attractive and easy to use administrative interface that makes managing your galleries a breeze. Integrating our gallery software into your website is as easy as inserting three lines of PHP code. And did we mention the price? Absolutely Free.

Plogger installation requirements are MySQL v3.23+, GD1.0, and PHP4. Latest version available for download is Plogger 1.0 RC1. - See more at:
http://www.design3edge.com/201...alleries/#sthash.Mvhigfrp.dpuf 
Plogger:
http://www.plogger.org/ 
ขอบคุณเนื้อหาจาก
ปล.ถ้าซ้ำก็ขออภัยด้วยครับ
