The NAS4Free operating system can be installed on virtually any hardware platform to share computer data storage over a computer network. ‘NAS’ as in “Network-Attached Storage” and ‘4Free’ as in ‘Free and open source’, NAS4Free is the simplest and fastest way to create a centralized and easily-accessible server for all kinds of data easily accessed with all kinds of network protocols and from any network.
NAS4Free supports sharing across Windows, Apple, and UNIX-like systems. It includes ZFS v5000 , Software RAID (0,1,5), disk encryption, S.M.A.R.T / email reports etc. with the following protocols: CIFS/SMB (Samba), Active Directory Domain Controller (Samba), FTP, NFS, TFTP, AFP, RSYNC, Unison, iSCSI (initiator and target), HAST, CARP, Bridge, UPnP, and Bittorent which is all highly configurable by its WEB interface. NAS4Free can be installed on Compact Flash/USB/SSD key, Hard disk or booted from a LiveCD/LiveUSB with a small usbkey for config storage.
ACH——Analysis of Competing Hypotheses，即竞争性假设分析是CIA使用30年以上的研究方法论，ACH帮助面对巨大量数据和假设条件时，进行客户的，有逻辑性的分析，可以指导研究人员识别争论的焦点，进行富有成效的讨论。
A free, open source tool for complex research problems.
A software companion to a 30+ year-old CIA research methodology, Open Source Analysis of Competing Hypotheses (ACH) will help you think objectively and logically about overwhelming amounts of data and hypotheses. It can also guide research teams toward more productive discussions by identifying the exact points of contention.