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Title	Test Details Valid Base64 string
Expression	(([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?){1}
Description	The expression evaluates a Base64 string as a sequence of 4-byte blocks with a possible tail of 2 or 3-byte block with valid padding.
Matches	AAAAAA==
Non-Matches	AAAAAA
Author	Rating: Not yet rated. Vassilis Petroulias

Title	Test Details HTML encoded characters as dec or hex values
Expression	&#([0-9]{1,5}|x[0-9a-fA-F]{1,4});
Description	Find all html encoded characters as dec &#[0-9]{1,5}; or hex &#x[0-9a-fA-F]{1,4}; values. Remember to remove "amp;" which is used for making this post possible.
Matches	  |  
Non-Matches	 
Author	Rating: Not yet rated. Vassilis Petroulias

Title	Test Details US and Canada Phone numbers (all variations)
Expression	((\+?1)(\ \.-)?)?\([2-9][0-9]{2}|\([2-9][0-9]{2}\))(\ \.-)?[0-9]{3}(\ \.-)?[0-9]{4}
Description	US and Canada phones in any usual variation (area code in parenthesis, spaces or dots) including the international notation +1
Matches	+1 212 555 6666 | (212) 555 6666 | 212-555-666 | 212 5556666
Non-Matches	212 555 666
Author	Rating: Not yet rated. Vassilis Petroulias

Title	Test Details Month names (english)
Expression	(Jan(uary)?|Feb(ruary)?|Mar(ch)?|Apr(il)?|May|Jun(e)?|Jul(y)?|Aug(ust)?|Sep(tember)?|Oct(ober)?|(Nov|Dec)(ember)?)
Description	The expression matches any month name (english) in short or full style. Use it with case insensitive mode in your date matching expressions.
Matches	Jan | April
Non-Matches	Febr
Author	Rating: Vassilis Petroulias

Title	Test Details Weekday names (english)
Expression	(Mo(n(day)?)?|Tu(e(sday)?)?|We(d(nesday)?)?|Th(u(rsday)?)?|Fr(i(day)?)?|Sa(t(urday)?)?|Su(n(day)?)?)
Description	The expression matches any weekday name (english) in short (2 or 3 characters) or full style. Use it with case insensitive mode in your date matching expressions.
Matches	Mo | Sun
Non-Matches	Any
Author	Rating: Not yet rated. Vassilis Petroulias

Title	Test Details US (5 or 9 digits) Zip Codes with grouping
Expression	(?<group5>[0-9]{5})-?(?<group4>[0-9]{4})?
Description	Match 5-digit or 9-digit US zip codes with grouped results. Remember to replace < with open tag char and > with close tag char
Matches	12345 | 12345-6789 | 123456789
Non-Matches	12345 6789
Author	Rating: Not yet rated. Vassilis Petroulias