Gapps简介
Gapps即Google apps 或者可以称为GMS（Google Mobile Service），即Google在移动端的一系列的服务和应用。gms并不属于AOSP(Android Open Source Plan)里面，所以并不开源，所有厂商要使用必须向Google缴纳授权费用。著名的CyanogenMod在2009年就被Google告上法庭，原因是ROM含有Google服务，后来的CM的ROM再也没有加入Google服务了，这是后话。
Google服务在Google网站上下载比较麻烦，而且按照国家来区分，中国能用的就只有face unlock（人脸解锁）。于是便有各种第三方的进行打包集合，在这里推荐使用Paranoid Android的gapps打包。
Paranoid Android是一个第三方ROM团队，和CM,OMNI相同。
搬运自xda_developer论坛，原帖地址http://forum.xda-developers.com/showthread.php?t=2397942。貌似该论坛的js，css什么的都是托管在Google那里，国内访问加载不全。
以下是4.4专用：
WHAT WE OFFER
We consider these apps as important as our ROM. It is sad that the ROM scene deals with so many broken/outdated or buggy packages
All packages should work fine on any custom Android 4.4.x ROM
All 4.4.x GApps packages and addons are compatible with both ART and Dalvik runtimes
Frequently updated Google Apps: Updates are posted weekly - generally on weekends
All apps are untouched, we do not change or modify Googles' applications but deliver them as-is
Automatic Backup: It is not necessary to re-flash GApps or modules when you flash a ROM update. Most ROM's support this function.
All installers measure your device's system partition size and will notify you, BEFORE making any changes, if it finds any problems
We offer several variations from a Google Stock Package (based on what Google ships on Nexus devices) to smaller, more minimal packages
All packages can be customized to your individual preferences using our exclusive Advanced Features and Options
GOOGLE STOCK PACKAGE
This package is recommended for most users of current generation devices (legacy device owners may want to use Mini or Micro Modular GApps due to the size of this package).
It includes all the Google Apps that come standard on Nexus devices. In this package you will find the core Google system base, off-line speech files, Google Play Store, FaceUnlock, Google Gallery², Sun Beam Live Wallpaper, and the following Play Store applications:
Chrome Browser(replaces stock/AOSP Browser) | Cloud Print | Google+ | Google Calendar(replaces stock/AOSP Calendar) | Google Camera(replaces stock/AOSP Camera) | Google Drive | Google Earth | Google Email
Google Keep | Google Keyboard(replaces stock/AOSP Keyboard) | Google News & Weather | Google Now Launcher(replaces stock/AOSP Launcher) | Google Play Books | Google Play Games
Google Play Movies & TV | Google Play Music | Google Play Newsstand | Google Play services | Google Search | Google Text-to-Speech(replaces stock/AOSP Pico TTS) | Google Wallet | Gmail
Hangouts(replaces stock/AOSP SMS App) | Maps | Quickoffice | Sound Search for Google Play | Street View on Google Maps | TalkBack | YouTube
FULL MODULAR PACKAGE
This package is similar to the Google Stock Package above except that it does NOT include Google Camera, Google Email, Google Keyboard, Google Gallery², and will NOT remove your stock/AOSP Launcher, Keyboard,
Browser, SMS App, or Pico TTS. If you don't have a Nexus device and/or prefer to use the stock/AOSP apps, this package is designed for you.
In this package you will find the core Google system base, off-line speech files, Google Play Store, FaceUnlock, Google Bookmarks Sync, Sun Beam Live Wallpaper, and the following Play Store applications:
Chrome Browser | Cloud Print | Google+ | Google Calendar(replaces stock/AOSP Calendar) | Google Drive | Google Earth | Google Keep | Google News & Weather | Google Now Launcher | Google Play Books
Google Play Games | Google Play Movies & TV | Google Play Music | Google Play Newsstand | Google Play services | Google Search | Google Text-to-Speech | Google Wallet | Gmail | Hangouts | Maps
Quickoffice | Sound Search for Google Play | Street View on Google Maps | TalkBack | YouTube
MINI MODULAR PACKAGE
This package is designed for those who use limited Google apps or prefer to install apps on their own.
In this package you will find the core Google system base, off-line speech files, Google Play Store, FaceUnlock, Google Bookmarks Sync, and the following Play Store applications:
Google+ | Google Calendar(replaces stock/AOSP Calendar) | Google Now Launcher | Google Play services | Google Search | Google Text-to-Speech | Gmail | Hangouts | Maps | Street View on Google Maps | YouTube
MICRO MODULAR PACKAGE
This package is designed for users of legacy devices with small system partitions or those who prefer a minimalistic approach.
In this package you will find the core Google system base, off-line speech files, Google Play Store, FaceUnlock, Google Bookmarks Sync, and the following Play Store applications:
Google Calendar(replaces stock/AOSP Calendar) | Google Now Launcher | Google Play services | Google Search | Google Text-to-Speech | Gmail
NANO MODULAR PACKAGE
This package is designed for users who want the smallest Google footprint possible while still enjoying native "Okay Google" and Google Search support.
In this package you will find the core Google system base, off-line speech files, Google Play Store, Google Bookmarks Sync, Google Calendar Sync, and the following Play Store applications:
Google Play services | Google Search
PICO MODULAR PACKAGE
This package is designed for users who want the absolute minimum GApps installation available.
In this package you will find the core Google system base, Google Play Store, Google Bookmarks Sync, Google Calendar Sync, and the following Play Store applications:
Google Play services
