钟馗之眼](https://www.zoomeye.org/)
[censys](https://www.censys.io/)
[shodan](https://www.shodan.io/)
[全球DNS搜索引擎](https://www.dnsdb.io/zh-cn)
[FOFA](https://fofa.so/)
[Surfwax元搜索](http://lookahead.surfwax.com/)
[Way Back Machine(搜索网站过去的样子)](https://archive.org/web/)
[Google学术](https://scholar.google.com.ph/)