百度PC：
Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)

百度移动：
Mozilla/5.0 (iPhone; CPU iPhone OS 9_1 like Mac OS X) AppleWebKit/601.1.46 (KHTML, like Gecko) Version/9.0 

Mobile/13B143 Safari/601.1 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)

360搜索
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0);

360网站安全检测
360spider (http://webscan.360.cn)

Google
Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)

Google图片搜索
Googlebot-Image/1.0

Adwords移动网络
AdsBot-Google-Mobile (+http://www.google.com/mobile/adsbot.html) Mozilla (iPhone; U; CPU iPhone OS 3 0 like Mac OS X) 

AppleWebKit (KHTML, like Gecko) Mobile Safari

微软 bing，必应
Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)

腾讯搜搜
Sosospider+(+http://help.soso.com/webspider.htm)

搜搜图片
Sosoimagespider+(+http://help.soso.com/soso-image-spider.htm)

雅虎英文
Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)

雅虎中国
Mozilla/5.0 (compatible; Yahoo! Slurp China; http://misc.yahoo.com.cn/help.html)

搜狗图片
http://pic.sogou.com Sogou Pic Spider/3.0(+http://www.sogou.com/docs/help/webmasters.htm#07)

搜狗
Sogou web spider/4.0(+http://www.sogou.com/docs/help/webmasters.htm#07)

网易有道
Mozilla/5.0 (compatible; YoudaoBot/1.0; http://www.youdao.com/help/webmaster/spider/; )

瑞典 Speedy Spider
Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) Speedy Spider 

(http://www.entireweb.com/about/search_tech/speedy_spider/)

俄罗斯 yandex
Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)

宜搜 EasouSpider
Mozilla/5.0 (compatible; EasouSpider; +http://www.easou.com/search/spider.html)

华为赛门铁克蜘蛛
HuaweiSymantecSpider/1.0+DSE-support@huaweisymantec.com+(compatible; MSIE 7.0; Windows NT 5.1; Trident/4.0; .NET CLR 

2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR ; http://www.huaweisymantec.com/cn/IRL/spider)
华为赛门铁克科技有限公司网页信誉分析系统的一个页面爬取程序，其作用是用于爬取互联网网页并进行信誉分析，从而检查该网站上

的是否含有恶意代码。

七牛镜像蜘蛛
qiniu-imgstg-spider-1.0

监控宝
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; JianKongBao Monitor 1.1)

DNSPod监控
DNSPod-Monitor/2.0

俄罗斯 LinkpadBot
Mozilla/5.0 (compatible; LinkpadBot/1.06; +http://www.linkpad.ru)

英国 MJ12bot
Mozilla/5.0 (compatible; MJ12bot/v1.4.0; http://www.majestic12.co.uk/bot.php?+)