Diqt is a Web-based multilingual dictionary reference tool. That is, dictionaries of many languages can be searched using a Web browser. Any language is available if you have its dictionary data. For example, you can search English-Japanese, English-German, English-French, and Japanese-English dictionaries at the same time.
Estraier is a full-text search system for personal use. Its principal purpose is to realize a full-text search system for a Web site. It functions similarly to Google, but for a personal Web site or sites in an intranet. It has fast searching, conspicuous results, relational document search, the ability to handle Japanese text, and support for handling a large number of documents. Installation is easy.
RBBS (Raving Bulletin Board System) is a bulletin board system with Web interface. Users of RBBS can post new articles and can attach responses to existing reports. Although the principal purpose of RBBS is to be used as a communication system like a BBS, it is also useful for individual use and for one-to-many communication.
Hyper Estraier is a full-text search system. It can be used as a Web search engine, mailbox searching, etc. It features high performance searching, high scalability of target documents, a perfect recall ratio by the N-gram method, phrase searching, attribute searching, and similarity searching. Multilingualism is supported with Unicode. It is independent of file format and repository, and has a simple and powerful API.
Tokyo Cabinet is a library of routines for managing a database. It is the successor of QDBM. Tokyo Cabinet runs very fast. For example, the time required to store 1 million records is 1.5 seconds for a hash database and 2.2 seconds for a B+ tree database. Moreover, the database size is very small. For example, the overhead for a record is 16 bytes for a hash database, and 5 bytes for a B+ tree database. Furthermore, the scalability of Tokyo Cabinet is great. The database size can be up to 8EB.