Artha is a handy thesaurus based on WordNet with distinct features like global hot key look up, passive desktop notification, regular expression based search, etc. Artha may be used as a free open-source replacement/clone to the proprietary WordWeb Pro thesaurus (which is also based on WordNet) on Unix-like and Windows operating systems.
Regular Expression Builder for Java (reb4j) is a simple set of classes that encapsulates the regular expressions used by java.util.regex.Pattern and provides facilities for composing larger expressions from sub-expressions. It effectively provides a way to build regular expressions without the risk of encountering PatternSyntaxExceptions at runtime.
Email Address Validator is a PHP class that allows the developer to validate email addresses according to the RFC 5321 or RFC 5322 standards. It can also check to see if the domain can be resolved to MX RRs. Acceptable local-parts include dot-atom, quoted string, and obsolete. Acceptable domains include domain name, IPv4 address, IPv6 address, and IPv4-mapped IPv6 address. Folding white spaces and nested comments are also supported.
Notepas is a multi-platform text editor written in Lazarus which can be compiled for multiple platforms and widget sets using the advanced native Free Pascal Compiler. Aimed at developers, it has some functions usually not found in other text editors and introduces some new exclusive features.