, fanbaby wrote

Show me sites on the alexa 100 using Windows servers.

For fun, in alexa100 the following use IIS:

www.live.com
msn.com
microsoft.com
conduit.com
go.com

The following use Apache:

youtube.com
wikipedia.org
linkedin.org
ebay.com
mail.ru
apple.com
fc2.com
ask.com
craigslist.com
bbc.co.uk
odnoklassniki.ru
avg.com
mywebsearch.com
rakuten.co.jp
adobe.com
alibaba.com
wigetmedia.com
netflix.com
livedoor.com
huffingtonpost.com
uol.com.br
360.cn

The following use nginx:

yandex.ru
wordpress.com
163.com
vk.com
tumblr.com
pinterest.com
xhamster.com
soso.com
xvideos.com
pornhub.com
cnn.com
redtube.com
sogou.com
about.com
imgur.com

The following use other servers, are using load-balancer, bespoke webserver or security settings that obscure the server header:

facebook.com
google.com
yahoo.com
baidu.com
amazon.com
qq.com
twitter.com
taobao.com
blogspot.com
sina.com.cn
bing.com
babylon.com
weibo.com
googleusercontent.com
paypal.com
hao123.com
blogger.com
tmall.com
livejasmin.com
flikr.com
aol.com
youku.com
t.co
ifeng
thepiratebay.se
alipay.com
dailymotion.com
stackoverflow.com
360buy.com
adcash.com

Based entirely off the "Server" header from requesting the "http://www." form of the server and following all redirects.

Omitted from the results are duplicates in alexa that are effectively localisations of other sites in list list (e.g. amazon.co.uk is not included because amazon.com is, similarly for google.de and bing.co.uk, ebay.jp etc).

Warning: Before doing this yourself - not all of those URLs are safe for work!