Some perfect software(Windows, Linux, OpenSource, URL, etc.)

1.  Internet, network communication, TCP/IP:

1.1 FireFox(http://www.mozilla.org/) a Open source web browser, Cross-platform.

1.2 Torpark(new name: xerobank,http://www.xerobank.com/software_torpark.html ):  It is the free anonymous web browser. You're just a click away from anonymous surfing right now! The benefits of xB Browser is that it allows you to securely and anonymously surf the internet, bypass firewalls and website censorship. For enhanced privacy, xB Browser clears history of browing and deletes cookies when you close the browser. Base on firefox and tor.

1.3 Ethereal(http://www.ethereal.com/)  A Open source Cross-platform and The world's most popular network protocol. analyzer.Base on WinPcap.

1.4 WinPcap(http://www.winpcap.org/)  It is the industry-standard tool for link-layer network access in Windows environments: it allows applications to capture and transmit network packets bypassing the protocol stack, and has additional useful features, including kernel-level packet filtering, a network statistics engine and support for remote packet capture.

1.5 WinDump(http://www.winpcap.org/windump/)  WinDump is the Windows version of tcpdump, the command line network analyzer for UNIX.

1.6 tcpdump/libpcap(http://www.tcpdump.org/)  libpcap is a system-independent interface for user-level packet capture. libpcap provides a portable framework for low-level network monitoring. Applications include network statistics collection, security monitoring, network debugging, etc.  tcpdump is a tool for network monitoring, protocol debugging and data acquisition. Base on libpcap.

1.7 Nmap(http://insecure.org/nmap/download.html ) Nmap is a Security Scanner and Open Source.

1.8 ALL STerm, putty,winscp. Snort,ipfilter. Open source web site(http://sourceforge.net/).

2 Video,sound,multimedia.

2.1 KMPlayer(http://www.kmplayer.com/): a open source multimedia player, it can play Unfinished file.

2.2 Media Player Classic(http://sourceforge.net/projects/guliverkli/): a open source multimedia player.

2.3 Winamp: a mp3 format file player,of courseit can read other file format.

3 Editor, development tool, platform.

3.1 UltraEdit-32.

3.2 Visual C++ 6.0(sp5), VSS.

3.3 source insight.

3.4 vi.

3.5 visio.

3.6 Test Director

3.7 ERWin

3.8 Beyond Compare

4. Life knowledge 4.1  Cell phone BBS: http://bbs.imobile.com.cn/ 4.2
 IT device: http://detail.zol.com.cn

5. http://damnsmalllinux.org/
Damn Small is small enough and smart enough to do the following things:

• Boot from a business card CD as a live linux distribution (LiveCD)
• Boot from a USB pen drive
• Boot from within a host operating system (that's right, it can run *inside* Windows)
• Run very nicely from an IDE Compact Flash drive via a method we call "frugal install"
• Transform into a Debian OS with a traditional hard drive install
• Run light enough to power a 486DX with 16MB of Ram
• Run fully in RAM with as little as 128MB (you will be amazed at how fast your computer can be!)
• Modularly grow -- DSL is highly extendable without the need to customize

6 GSM protocol and GSM protocol tools
6.1 GSM protocol documents: http://www.3gpp.org/ftp/Specs/archive/04_series/
6.2 GSM protocol tools:TEMS Investigation GSM 5.0
6.3 SDL and TTCN Suite 4.4

7 encrypt tools
truecrypt
Free open-source disk encryption software for Windows Vista/XP, Mac OS X, and Linux
http://www.truecrypt.org/
http://www.truecrypt.org/localizations.php
Language Packs for the Latest Stable Version of TrueCrypt.