List of string escaping tools:

HTML Escape
Escapes or unescapes an HTML file removing traces of offending characters that could be wrongfully interpreted as markup.
Features- Escapes all reserverd characters with their corresponding HTML entities (', ", &, <, >)
- Escapes ISO 8859-1 symbols and characters that have corresponding HTML entities

XML Escape
Escapes or unescapes an XML file removing traces of offending characters that could be wrongfully interpreted as markup.

Java and .Net Escape
Escapes or unescapes a Java or .Net string removing traces of offending characters that could prevent compiling.

JavaScript Escape
Escapes or unescapes a JavaScript string removing traces of offending characters that could prevent interpretation.

CSV Escape
Escapes or unescapes a CSV string removing traces of offending characters that could prevent parsing.

SQL Escape
Escapes or unescapes a SQL string removing traces of offending characters that could prevent execution.