[iPhone] How To Choose The Best XML Parser for Your iPhone Project

http://www.raywenderlich.com/553/how-to-chose-the-best-xml-parser-for-your-iphone-project

Finally, let’s wrap up with a chart that summarizes the differences between the parsers and everything we’ve discussed above:

NSXML	libxml2 – SAX	TBXML	TouchXML	KissXML	TinyXML	GDataXML	libxml2 – DOM
Included with SDK?	Yes	Yes	No	No	No	No	No	Yes
Seconds to Parse	1.87	1.19	0.68	1.1	1.37	1.27	1.07	0.84
Peak Memory Usage	3.11	3.01	3.07	6.5	5.25	4.8	4.15	4.97
Parse While Downloading?	No	Yes	No	No	No	No	No	No
Edit/Save XML?	No	No	No	No	Yes	Yes	Yes	Yes
XPath Support?	No	No	No	Yes	Yes	Yes*	Yes	Yes
C or Obj-C	Obj-C	C	Obj-C	Obj-C	Obj-C	C	Obj-C	C
License	Apple	MIT	MIT	MIT	MIT	ZLib	Apache	MIT

* = with TinyXPath





ref>
http://cafe.naver.com/mcbugi/10546

About answer of XML Parser

NSXMLParser, LibXML2 두 가지를 기본 지원합니다.
NSXMLParser는 Objective-C 의 delegate 구조로 되어 있고, SAX입니다.
LibXML2는 C로 되어 있고, DOM, SAX 지원합니다.
Parsing interface, 개발 편의성, 성능 지표등을 비교해보고 골라 쓰면 되겠습니다.

Sample code>
https://developer.apple.com/iphone/library/samplecode/XMLPerformance/