album is a free HTML/XHTML photo album and gallery generator that supports themes/skins. You can choose different themes or write your own to get different layouts and styles. It creates all your thumbnails (including directory thumbnails) and descends into directories so you can organize your photos. See the home page for more examples. album is also multi-lingual, with many languages being added all the time. N.B.: The purchase link is provided for donations; the software does not cost anything.
graphviz is a set of graph drawing tools and libraries. It supports hierarchical and mass-spring drawings; although the tools are scalable, their emphasis is on making very good drawings of reasonably-sized graphs. Package components include batch layout filters and interactive editors for X11, Java, and a TCL/tk extension. The batch filters can be configured as a web visualization service (using GIF and click-maps). Typical applications include display of finite state machines, software diagrams, database schemas, and communication networks.
iVote is a sort of visual poll/image voting system that allows you to set up a collection of images that users can then vote on. A full administration screen is available that allows you to add/delete entries, sort by fields, gather statistics and manage the database. Users are presented a visual preview page where they can vote. It includes theme support.
LiveFrame Gallery is an easily-customized photo album and slideshow application. Its interface focuses your user's attention on your photographs, not on navigation, allowing them to easily click through sequentially, select from thumbnails, or view an automated slideshow. Users can select from up to five different image sizes to view, based on their display size and network connection. All pages are template based, allowing you to easily customize the entire interface.
OIO is a Web-based metadata/data management front-end which is built using Zope and works with Postgresql. No programming is required to build and manage Web-forms or to perform data mining/analysis on the collected data. It is in production at the Harbor/UCLA Medical Center for clinical outcomes management and research data. Forms created with OIO and hosted on any OIO server can be downloaded as XML files. Once downloaded from the "Forms library" and imported into an OIO server, the necessary database tables are automatically recreated and the imported forms become immediately available to the users of that OIO server.
Photo Collection is a Web-based picture organizer. Pictures are indexed in a relational database (currently MySQL), and can be organized in hierachical categories. Each picture has a thumbnail and can have a name. It is written in PHP on the Web side, and there is a Perl client for database administration.
phpGraphy is a PHP script that allows you to display a picture book/photo gallery on your Web site in a very convenient way. It has many features such as both static and on-the-fly low resolution and thumbnail picture generation, user comments, picture ratings, EXIF/IPTC handling, security levels, and Web interface management. It's also easy to install and highy customizable.