When comparing Metager vs Siik, the Slant community recommends Metager for most people. In the question“What are the best internet search engines?” Metager is ranked 6th while Siik is ranked 15th.
Ranked in these QuestionsQuestion Ranking
Pro Open source
Pro Allows to visit search results anonymously
Pro Tor network service
Gives access within Tor.
Pro Run by a non profit organisation dedicated to privacy and data protection
Pro Really fast
It displays only what you need and no more.
Pro Supports easy search in open-street-map
Locations can be shown on open-street-map.
Pro It has news
It has a very cool news section.
Pro It has its own index
It's not a metasearch engine.
Pro Entities search
It shows up entities and descriptions from Wikipedia.
Con Uses only Bing and Ecosia results
The latter of which could be their own crawler.