rikaichan is described as 'Rikaichan is a popup Japanese-English/German/French/Russian dictionary tool for Firefox, Thunderbird and Seamonkey' and is a Dictionary in the education & reference category. There are more than 10 alternatives to rikaichan for a variety of platforms, including Web-based, Windows, Google Chrome, Mozilla Firefox and Android apps. The best rikaichan alternative is Jisho, which is free. Other great apps like rikaichan are 10ten Japanese Reader (Rikaichamp), Yomichan, rikaikun and Yomitan.
Powerful and easy-to-use online Japanese-English dictionary with words, kanji and example sentences, among other features, like sentence parsing and inflection info.
Jisho is the most popular Web-based alternative to rikaichan.
Jisho is the most popular free alternative to rikaichan.
10ten Japanese Reader (Rikaichamp) is the most popular Open Source alternative to rikaichan.
Yomichan turns your browser into a tool for building Japanese language literacy by helping you to decipher texts which would be otherwise too difficult tackle. Inspired in part by Rikaichan, it stands apart as an all-encompassing learning tool.
Most users think Yomichan is a great rikaichan alternative.
Yomichan is the most popular Windows, Mac & Linux alternative to rikaichan.
Yomitan turns your web browser into a tool for building language literacy by helping you read texts that would otherwise be too difficult to tackle in a variety of supported languages.
Memento is a free and open source, mpv-based video player that makes studying Japanese easier with a built in popup dictionary, Anki integration, and more.
An offline Japanese dictionary for Android using JMdict (Japanese-Multilingual Dictionary). Display exact term/term at the beginning/term included
Sumatora is the most popular Android alternative to rikaichan.
Front end for online Japanese dictionary service Jim Breen's WWWJDIC hosted by Monash University. Search kanji by radicals. Pronunciation by text to speech. Includes sample sentences. User handwriting recognition via Kanji Recognizer (separate, non-free app).
Japanese-English popup dictionary that lets you look up Japanese word definitions without leaving your current screen! Look up Japanese words simply by copying to the system clipboard, from anywhere, including web browsers, PDFs, ebooks and emails.
Popup Japanese Dictionary is the most popular Android Tablet alternative to rikaichan.
Popup Japanese Dictionary is the most popular commercial alternative to rikaichan.
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Useful dictionary application for looking up Japanese words as it works with other applications besides the browser.