Yandex's Keyword Statistics is a service that allows Yandex.Direct advertisers to assess user interest in specific topics and to find targeted keywords. The service contains detailed statistics on requests to Yandex over the last 30 days.
The top open-source alternatives to Yandex Keyword Statistics
are GetKeywords.io.
One of the criteria for ordering this list is the number of mentions that products have on reliable external sources.
You can suggest additional sources through the form here.
