There are a lot of good iOS open source projects on GitHub

There are a lot of good iOS open source projects on GitHub, personally think good, there are so few:
1. Reactivecocoa:reactivecocoa/reactivecocoa GitHub:
The OBJECTIVE-C implementation of GitHub's own functional responsive programming paradigm, where the name sounds very tall, the learning curve is really steep, but it will definitely change your understanding of iOS programming, the first push.
2. Mantle:mantle/mantle GitHub:
It is the product of GitHub's own, the first choice of lightweight modelling, also can work well with coredata.
3. Afnetworking:afnetworking/afnetworking GitHub:
Before IOS7, Apple's own network library is more difficult to use! The afnetworking of the great God of Matt will definitely liberate you. Using Apple's nsurlrequest and IOS7 nsurlsession, a clear architecture, enough documentation, can be considered a model for third-party open source libraries.
4. Blockskit:pandamonia/blockskit Road GitHub
I quite prefer the block in functional programming,objective-c to definitely satisfy my tastes. But it's not easy to use blocks, but if you have love for block, use this library.
5. Nimbus:jverkoey/nimbus GitHub
The first time to focus on Nimbus is because of the Facebook Three20 Open Source Library. Unfortunately Three20 Library has died, the main author jumped out, wrote the Nimbus.
6. Pop:facebook/pop GitHub
Facebook's paper, animated, is a great way to catch up with Apple's native app. Pop is paper's animation library!
7. gpuimage:bradlarson/gpuimage?? GitHub
IOS7 out, a lot of good-looking effect, in fact, are all kinds of image processing (such as fuzzy effect). Image processing seems to be one of the essential skills of iOS development later. And Gpuimage, is able to quickly deal with a variety of image effects of the sharp weapon!

There are a lot of good iOS open source projects on GitHub