Perl Compatible Regular Expressions RE2 (software) Comparison of regular expression engines Philip Hazel Parser (programming language) GnuWin32 STklos .htaccess Multidimensional hierarchical toolkit Metacharacter Sigil (application) Sentence boundary disambiguation Exim BSON Delta3D Regular expression Grep Jean Grou ReDoS WebKit ISSN Pattern matching Harbour (programming language) Iława C string handling Aircrack-ng Pwn2Own List of computing and IT abbreviations CEGUI ABAP Comparison of email clients