pyPEG is a quick and easy solution for creating a parser in Python programs. pyPEG uses a PEG language in Python data structures to parse, so it can be used dynamically to parse nearly every context free language. The output is a plain Python data structure called pyAST, or, as an alternative, XML.
queXC is a Web-based data cleaning and coding/classification system that takes a data file (such as data collected from a questionnaire) and cleans the text input fields by spacing them and spell checking them. It allows operators to code text fields to existing coding schemes, or to create a coding scheme on the fly. Multiple operators can code and clean simultaneously, with the ability to assign operators to do particular codes. The queXC system includes some coding schemes created from ABS (Australian Bureau of Statistics) data. It can be used as an open source replacement for Nvivo in some situations.
Solr is an enterprise search platform from the Apache Lucene project. Its major features include powerful full-text search, hit highlighting, faceted search, dynamic clustering, database integration, and rich document (e.g. Word and PDF) handling. Solr is highly scalable, providing distributed search and index replication, and it powers the search and navigation features of many of the world's largest internet sites. Solr is written in Java and runs as a standalone full-text search server within a servlet container such as Tomcat. Solr uses the Lucene Java search library at its core for full-text indexing and search, and has REST-like HTTP/XML and JSON APIs that make it easy to use from virtually any programming language. Solr's powerful external configuration allows it to be tailored to almost any type of application without Java coding, and it has an extensive plugin architecture when more advanced customization is required.
JOrtho is a spell checker for Java. The library works with any JTextComponent from the Swing framework and checks as you type. The dictionary is based on the free Wiktionary.org, and is applicable for multiple languages. You can select the spell checking language via a context menu. The Features of JOrtho are the highlighting of potentially wrongly spelled words, a context menu with suggestions for correct forms of the word, and a context menu with option to change the checking language. At the moment there are nine languages for spell checking available: English, German, French, Spanish, Italian, Russian, Polish, Dutch, and Arabic.
ANTLR (ANother Tool for Language Recognition) is a language tool that provides a framework for constructing recognizers, compilers, and translators from grammatical descriptions containing C++, Java, or Sather actions. It is similar to the popular compiler generator YACC, however ANTLR is much more powerful and easy to use. ANTLR-produced parsers are not only highly efficient, but are both human-readable and human-debuggable (especially with the interactive ParseView debugging tool). ANTLR can generate parsers, lexers, and tree-parsers in either C++, Java, or Sather. ANTLR is currently written in Java.