线上文字差异比较工具免费-Free Online Text Compare Tool

TextDiff 除了能够比较文档之外，还可以比较两个文件夹下的所有文字档案，比较结果相异的地方会用不同的颜色来标明，很清楚明了，很方便吧。
This site offers you the ability to compare two pieces of text easily online. Simply copy&paste the strings you want to compare into the forms provided.
http://www.textdiff.com/

其他相关工具，本站没使用过...
Other site, u may try it...
http://www.comparesuite.com/online/try_for_free.php
http://www.comparesuite.com/online.htm/