It offers 100 free queries per day and thereafter $5 per 1000 queries, up to 10,000 queries per day. Yahoo's BOSS (Build your Own Search Service) service is described here:
I highly recommend YACY, it has clean api, I have created a small tutorial on how to create a YACY client, please feel free to modify the code to your liking, let us know if the code can be improved. You can view the code in the following url http://symvc.com/media/article/25/show.
I have been searching for a search engine until I found it, yacy is free and absolutely no strings attached. You can use it for a single website, you can make it for as many websites as you want, you can do many things with it.
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提供付费服务条款的引擎：
提供有限免费服务的引擎：
提供免费服务的引擎：
ᴿ 需要注册
已弃用，已过时，或不再存在：
Engines that offer paid service terms:
Engines that offer limited free service:
Engines that offer free service:
ᴿ Registration required
Deprecated, obsolete, or no longer exist:
雅虎和谷歌都允许自动查询，但需付费。您可以在此处了解有关 Google 自定义搜索 API 的信息：
http://code.google.com /apis/customsearch/v1/overview.html
每天提供 100 个免费查询，此后每 1000 个查询 5 美元，每天最多 10,000 个查询。雅虎的 BOSS（构建您自己的搜索服务）服务如下所述：
http://developer.yahoo.com/ search/boss/
他们对每 1000 个查询收取 80 美分，或者对刷新速度较慢的有限索引每 1000 个查询收取 40 美分。
我不知道有任何其他服务提供收费的自定义搜索，但很高兴听到它们。
Both Yahoo and Google allow automated queries, for a fee. You can read about Google's Custom Search API here:
http://code.google.com/apis/customsearch/v1/overview.html
It offers 100 free queries per day and thereafter $5 per 1000 queries, up to 10,000 queries per day. Yahoo's BOSS (Build your Own Search Service) service is described here:
http://developer.yahoo.com/search/boss/
They charge 80 cents per 1000 queries, or 40 cents per 1000 queries for their limited index with slower refresh.
I don't know of any other service providing custom search for a fee but would be glad to hear about them.
programmableweb
There is a nice list of APIs for search engines at programmableweb
我强烈推荐 YACY，它有干净的 api，我创建了一个关于如何创建 YACY 客户端的小教程，请随意根据您的喜好修改代码，如果代码可以改进，请告诉我们。您可以在以下网址查看代码 http://symvc.com/media/article/25/显示。
我一直在寻找一个搜索引擎，直到找到它，yacy 是免费的，并且绝对没有任何附加条件。您可以将它用于单个网站，您可以将其用于任意数量的网站，您可以用它做很多事情。
I highly recommend YACY, it has clean api, I have created a small tutorial on how to create a YACY client, please feel free to modify the code to your liking, let us know if the code can be improved. You can view the code in the following url http://symvc.com/media/article/25/show.
I have been searching for a search engine until I found it, yacy is free and absolutely no strings attached. You can use it for a single website, you can make it for as many websites as you want, you can do many things with it.