apple源码

objc https://opensource.apple.com/tarballs/objc4/

runloop https://opensource.apple.com/tarballs/CF/

gcd https://github.com/apple/swift-corelibs-libdispatch

GNU libc https://www.gnu.org/software/libc/ https://ftp.gnu.org/gnu/libc/

malloc http://www.opensource.apple.com/source/libmalloc

GNUstep http://www.gnustep.org/resources/downloads.php

优化工具

https://github.com/UIControl/LXDAppFluecyMonitor

https://github.com/beiliao-mobile/BLStopwatch

https://github.com/tinymind/LSUnusedResources

https://tinypng.com

https://www.jetbrains.com/objc/

第三方工具解析LinkMap文件：https://github.com/huanxsd/LinkMap

架构与设计模式

https://github.com/skyming/Trip-to-iOS-Design-Patterns

https://design-patterns.readthedocs.io/zh_CN/latest/