Imageboard

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An imageboard or image board is a type of Internet forum which operates mostly via posting images. The first imageboards were created in Japan, and many English language imageboards today are centered on Japanese culture. They are based on the textboard concept.

Characteristics

Imageboards, similar to bulletin board systems, are used for discussions of a variety of topics. The primary focus of imageboards, however, is directed away from text posts, and is instead placed on picture posts. The two share many of the same structures, including separate forums for separate topics, as well as similar audiences. Imageboards are much more transitory with content—on some boards (especially highly trafficked ones), the thread deletion time can be as little as 10 minutes. The most popular English language imageboard, 4chan, tends to revolve around Japanese culture such as CG artwork or anime. In Japan, where imageboards are more common, topics vary widely, ranging from trains to current news.

Imageboards are also different from online galleries in that most of the works posted are not made by the poster, but instead are taken from other online sources: galleries, other imageboards, and edited pictures.

Tripcodes

Most imageboards and 2channel-style discussion boards allow (and encourage) anonymous posting and use a system of tripcodes instead of registration. A tripcode is the hashed result of a password that allows one's identity to be recognized without storing any data about users. Entering a particular password will let one "sign" one's posts with the tripcode generated from that password, while trying to take another user's tripcode and compute their password from it (for instance, to make posts that appear to come from a particular person) is computationally difficult. Anonymity is considered to be one of the advantages of an imageboard. Some boards have from time to time removed the ability to post with a name altogether (known as "forced anonymous/anonymity").

Software

There are two primary types of imageboard software packages in widespread use:Template:Citation needed linearly directed imageboards modeled closely after Futaba Channel (in which content is posted through hierarchical subsections of topical interest, usually denoted by a forward slash such as "/f" for female), and nonlinear imageboards modeled after Danbooru (usually indicated by the usage of controlled folksonomic vocabulary for topical tagging and search).

Futaba Channel clones

There are currently several Futaba-based imageboard software packages in widespread use:Template:Citation needed Futallaby, Wakaba, Kusaba X.

Futallaby is a PHP script based on the Futaba script from Futaba Channel. Although the Futallaby source is still freely available at 1chan,<ref>Template:Cite web</ref> it is no longer in development, and the download page recommends using Wakaba instead, stating that "Wakaba can do everything Futallaby does and so much more." Futallaby started as a translation of Futaba, later retooled to support XHTML and customizable CSS styles. It is mostly notable for being the first open source English imageboard script.Template:Citation needed

Wakaba is a Perl imageboard script with a SQL backend to store thread information.<ref>Template:Cite web</ref> It is designed to be more efficient and cleanly written than other scripts that are available, while preserving the same kind of functionality. Wakaba is one of most popular western imageboard software scripts,Template:Citation needed used most notably by iichan (Wakachan).<ref>Template:Cite web</ref> Because of its focus on bare-bones functionality, Wakaba lacks many of the modern amenities provided by 4chan's Yotsuba,<ref>Template:Cite web</ref> and newer imageboard scripts. A few users have attempted to remedy this by forking the original project and adding in features they consider beneficial. Two FOSS examples of this are frankusr's Wakaba fork,<ref>Template:Cite web</ref> and the user experience focused Glaukaba.<ref>Template:Cite web</ref>

Kusaba was a modular imageboard software written in PHP, which used MySQL.<ref>Template:Cite web</ref> The creator has discontinued the project, however, and recommends TinyIB instead.

Kusaba X is a continuation of kusaba. Like Kusaba, Kusaba X is written in PHP, and is designed with modularity in mind. It requires a MySQL or SQLite database to run. kusaba and its derivatives were at one time some of the most popular imageboard solutions.Template:Citation needed Kusaba X is still in development and the developers state that version 1.0.0 is to be released soon.Template:Citation needed

Danbooru-style boards

Usually referred to as a "booru" (or plural "boorus"). Unlike Futaba-inspired imageboard software packages, Danbooru and derivatives aim for a non-hierarchical semantic structure in which users are able to post content and add tags, annotations, translations, and comments.

There exists a number of different Danbooru-style imageboards, both those who have shared source code and those who are not released for others to use.