Minio 
Minio is a minimal cloud storage server for Micro Services & Magnetic Disks. Written in Golang and licensed under Apache license v2. Compatible with Amazon S3 APIs.
Minio Client
Minio Client (mc) provides a modern alternative to Unix commands like ls, cat, cp, sync, and diff. It supports POSIX compatible filesystems and Amazon S3 compatible cloud storage systems. It is entirely written in Golang.
Amazon S3 Compatible Client Libraries
Install 

Linux, OS X, Windows
$ go get github.com/minio/minio-fs
How to use Minio?
$ minio-fs server
NAME:
minio-fs server - Start Minio cloud storage server.
USAGE:
minio-fs server PATH
EXAMPLES:
1. Start minio server on Linux.
$ minio-fs server /home/shared
2. Start minio server on Windows.
$ minio-fs server C:\MyShare
3. Start minio server bound to a specific IP:PORT, when you have multiple network interfaces.
$ minio-fs --address 192.168.1.101:9000 /home/shared
$ minio-fs server ~/Photos
AccessKey: G5GJRH51R2HSUWYPGIX5 SecretKey: uxhBC1Yscut3/u81l5L8Yp636ZUk32N4m/gFASuZ
To configure Minio Client.
$ wget https://dl.minio.io:9000/updates/2015/Oct/darwin-amd64/mc
$ chmod 755 mc
$ ./mc config host add localhost:9000 G5GJRH51R2HSUWYPGIX5 uxhBC1Yscut3/u81l5L8Yp636ZUk32N4m/gFASuZ
$ ./mc mb localhost/photobucket
$ ./mc cp ~/Photos... localhost/photobucket
Starting minio server:
Listening on http://127.0.0.1:9000
Listening on http://172.30.2.17:9000
Contribute to Minio Project
Please follow Minio Contributor's Guide