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 inspired the creation of a number of English language imageboards. They are based on the textboard concept.
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. In Japan, where imageboards are more common, topics will vary widely, ranging from trains to current news. The most popular English language imageboard, 4chan, similarly has a large variety of topics.
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.
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. For those who want a custom tripcode, however, there are custom tripcode generators (which are technically tripcode crackers) available, such as Meriken's Tripcode Engine and MTY_CL. In general, anonymity is considered to be one of the advantages of an imageboard, and some boards have from time to time removed the ability to post with a name altogether (known as "forced anonymous/anonymity").
There are two primary types of imageboard software packages in widespread use: 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: 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, 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.
Wakaba is a Perl imageboard script with a SQL backend to store thread information. 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 the most popular western imageboard software scripts, used most notably by iichan (Wakachan). Because of its focus on bare-bones functionality, Wakaba lacks many of the modern amenities provided by 4chan's Yotsuba, 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, and the user experience focused Glaukaba.
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. Kusaba X has since fallen out of active development, and has not been updated since July 2011.
Usually referred to as a "booru" (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, artist commentary, and comments.
There exist a number of different Danbooru-style imageboards, both those with shared source code and those that are not released for others to use. The two main Danbooru derivatives are Gelbooru and MyImouto.
|Yes||Danbooru||Ruby on Rails||FreeBSD||Uses PostgreSQL.|
|Yes||Shimmie 2||PHP||GPLv2||Uses MySQL by default (as part of LAMP), can also use PostgreSQL.|
|Yes||naranai 1.3.x||PHP||GPLv3||Uses MySQL. Built to replace Danbooru because author considered Ruby unsuitable.|
|Yes||Moebooru||Ruby on Rails||MIT||Uses PostgreSQL.|
|Yes||MyImouto||PHP||MIT||Uses MySQL. PHP port of Moebooru. Uses a custom Ruby-on-Rails-like framework.|
|Yes||Sequenzia||PHP||MIT||Uses MySQL. Modified and re-designed port of MyImouto for the Sequenzia Project. Some code is specialised for the Sequenzia Project and AC Research.|
|No||Gelbooru 0.2.x||PHP||Proprietary||Uses MySQL. Gelbooru 0.1.x is open source but 0.2.x currently is not.|
|No||Octabooru||PHP||Proprietary||(temporarily down due to host server issues) (download link removed as it leads to a phishing scam)|
|No||booru-on-rails||Ruby on Rails||Proprietary||Uses PostgreSQL, used to use MongoDB. "The 'booru-on-rails' project that powers Derpibooru is planned to be released to the public once the debugging is complete."|
An English-language imageboard based on cannabis culture which was created on April 4, 2005 by Kirtaner Aster. The name is a reference to the larger 4chan and the code term 420 of the cannabis subculture. Its boards include various drug-specific boards, as well as a board featuring a chatterbot.
4chan is an English language imageboard based on the Japanese imageboard Futaba Channel. This imageboard is based primarily upon the posting of pictures (generally related to a wide variety of topics, from anime and popular culture to politics and sports) and their discussion. The Guardian describes it as "at once brilliant, ridiculous and alarming."
The site and its userbase have received attention from the media for a number of reasons, including attacks against Hal Turner on his Internet shows, distributed denial-of-service attacks against eBaum's World, taking part in Project Chanology, and multiple cases of anti-animal abuse reports.
8chan (or Infinitechan) is a primarily English language imageboard, although it has sub-boards dedicated to other languages. Just like 4chan, 8chan is based on posting pictures and discussion anonymously, but unlike 4chan, 8chan lets its users decide what they want to discuss by allowing any user to create their own board dedicated to any topic, a concept first made popular by news bulletin boards like Reddit. 8chan also claims to have a strong dedication to freedom of speech and allows all content—so long as the discussion and board creation abides by United States law. However, local moderators enforce the rules of their own boards and may delete posts as they see fit. It is currently partnered with the Japanese textboard 2channel.
Futaba Channel (ふたば☆ちゃんねる), or "Futaba" for short, is a popular, anonymous BBS and imageboard system based in Japan. Its boards usually do not distinguish between not safe for work and clean content, but there is a strict barrier between two-dimensional (drawn) and three-dimensional (computer graphics (CG) and photographic) pictures that is heavily enforced and debated.
Hispachan was launched in November 2012 as a global imageboard for all Spanish-speaking countries. Vice Magazine describes it as "a site for completely anonymous Spanish-language discussion that has proven popular among hackers since its launch in 2012".
Karachan is the largest Polish imageboard at 16 million posts, founded in 2010. Karachan has received attention from the Polish media after many trolling actions targeting Polish politicians, journalists and the Pope John Paul II. Its name comes from the Polish word karaczan, which means a cockroach, an insect that is used as Karachan's logo.
A primarily German-language imageboard that was founded in 2007. The name is an allusion to the ethnophaulism Kraut for Germans. Unlike most imageboards, posters on Krautchan didn't publish their postings under the generic name "Anonymous". The german name "Bernd" was used instead and the Krautchan community identified themselves as "Bernds" instead of "Anons". In 2009, after the Winnenden school shooting, the Interior Minister of Baden-Württemberg cited a post on the imageboard in a press conference that appeared to forewarn of the shooting, but was later found to be fake. The site also featured a popular English language board, /int/, which was also the origin of the Polandball internet phenomenon. In March 21, 2018 the imageboard was shut down. Two days later the imageboard kohlchan was founded as a replacement.
(Russian: сосач, romanized: sosách, lit. 'sucking chan', also known as Dvach, Russian: двач, romanized: dvách) is Russian imageboard which was created as result of shut down of the 2ch.ru (originally known as dvach) declared on January 17, 2009; unlike others it thoroughly copied original layout and was actively advertised over the internet and soon after it managed to succeed original one in popularity. According to its owners number of posts left in the /b/ board exceeded 150 million. In September of 2016 a pro-Russian government organisation MAIL.RU helped to organize "defense" against alleged DDOS attacks that took place during the same month; events raised concerns and speculations among users who grew suspicious over alleged takeover committed by the mail.ru and over owner's controversial decision to accept "help" and which also caused discontent. As of October 2018 It was widely believed that imageboard was simply "sold" on undisclosed terms; the decision to sell the board to pro-government organisation was met with high criticism due to risks of disclosure of anonymous users to the government potentially violating principles of anonymity and urging many to leave the board by the end of 2016. In October 2018 users from Dvach disclosed true identity of one of suspects who was allegedly involved in poisoning of ex-Russian spy and other British subjects in Salisbery. Users from dvach emailed several Bellingcat investigators to whom they provided public photos of him showing his real name on board of honorably awarded military serviceman and his participation in public events in Russian Far Eastern High General Military Command Academy. By 2019 it remains among the largest active Russian-speaking imageboards.
Wizardchan is an imageboard primarily dedicated to male virgin culture and topics including anime, hobbies, and depression. Users on the depression board often discuss suicide or self-harm, and a controversy emerged in the board's community about whether to refer users to suicide prevention hotlines.
Ylilauta is a Finnish-language imageboard that was founded in 2011 with the joining of the two most popular Finnish imageboards, Kotilauta and Lauta.net. It is the origin of Spurdo Spärde and Apu Apustaja.
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