來源： http://www.uisdc.com/the-ultimate-guide-to-flat-design

Featherweight UI (free)http://sarahjustine.com/2013/03/17/featherweight-ui-a-free-vector-based-and-retina-ready-ui-kit-with-bonus-mini-tutorial/

Polaris UI kit (free) http://designmodo.com/polaris-free/

Erste UI kit (free)http://www.designyourway.net/blog/resources/eerste-flat-user-interface-kit-that-is-free-to-download/

FlatUI kit (free)http://www.webdesignerdepot.com/2013/05/flat-ui-kit-free-download/

Flat UI (free)http://designmodo.github.io/Flat-UI/

Flat UI kit (free)http://dribbble.com/shots/947782-Freebie-PSD-Flat-UI-Kit

Metro UI kit (free)http://www.tempees.com/free-download/metro-ui-kit

Monotone flat UI kit (free)http://dribbble.com/shots/1061304-Freebie-PSD-Flat-UI-Kit

Vertical Infinity (free)http://www.cssauthor.com/vertical-infinity-a-mega-flat-style-ui-kit-for-free-download/

Lil UI kit ($6)https://creativemarket.com/lilsquid/5455-Lil-UI-Kit-PSD-Vector-UI-Library

How To Create Notification System in PHP

http://www.techknowlogists.com/how-to-create-notifications-system-php/

How to Create News Feed like Facebook with PHP and jQuery

http://www.techknowlogists.com/how-to-create-facebook-like-news-feed-with-php-and-jquery/

主題：10款常見的破解密碼工具

說明： 這應該不用解釋吧！

1. Brutus

2. RainbowCrack http://project-rainbowcrack.com/

3. Wfuzz http://www.edge-security.com/wfuzz.php

4. Cain and Abel http://www.oxid.it/ca_um/

5. John the Ripper http://www.openwall.com/john/

6. THC Hydra https://www.thc.org/thc-hydra/

7. Medusa http://www.foofus.net/jmk/tools/medusa-2.1.1.tar.gz

8. OphCrack http://ophcrack.sourceforge.net/

9. L0phtCrack http://www.l0phtcrack.com/download.html

10. Aircrack-NG http://www.aircrack-ng.org/

http://resources.infosecinstitute.com/10-popular-password-cracking-tools/

https://github.com/arut/nginx-rtmp-module

letmein telnet

http://www.windowsecurity.com/articles-tutorials/windows_os_security/Hidden_Backdoors_Trojan_Horses_and_Rootkit_Tools_in_a_Windows_Environment.html

http://www.megasecurity.org/trojans/w/winshell/Winshell5.0.html

http://www.radmin.com/download/

http://www.tightvnc.com/download.html