objc.io
A periodical about best practices and advanced techniques in Objective-C.
raywenderlich
Tutorials for iPhone/iOS Developer and Gamers
NSHipster
NSHipster is a journal of the overlooked bits in Objective-C and Cocoa. Updated weekly.
Cocoa With Love
虽然已经很久没有更新文章了，但里面都是些有内涵的干货。
Friday Q&A
Friday Q&A
Luke's Homepage
Luke's Homepage
Quality Coding
Quality Coding for iOS Developers
iOS Unit Testing
It's about TDD, unit testing, and creating bug free iOS code on iOS.
唐巧的技术博客
唐巧的技术博客
Ted's Homepage
@吴发伟Ted,研究生毕业后加入安全公司趋势科技（Trend Micro)。 目前在杭州，在阿里巴巴集团天猫工作。
cocoa dev central
Learn Cocoa.
破船之家
iOS 相关文章的一些中文翻译。
[ open source and commercial UI components for iOS and OS X.] (https://www.cocoacontrols.com/)
里面总结好多实用的代码
[Security Researcher ] (http://highaltitudehacks.com/security/ )
讲iOS安全教程
[All for Web and App Developers] (http://www.scoop.it/t/ios-developing ) demo很多 [Florian developer ] (http://floriankugler.com/)
里面有很多干货
[iOS App Dev Libraries, Controls, Tutorials, Examples and Tools] (http://maniacdev.com/ )
讲了好多库，教程，工具，demo
[ios 或安卓用到的加密] (http://www.9ria.com/subject/algorithm.html)