Google, found a lot of different options, but none satisfied simple conditions: - Ease of installation. Easy setup (no more than 4 hours since the start of reading the documentation). - Support for Russian morphology. As a plus - English. - Ability to index on the Web. - Issuance of results by relevance. Good ranking by relevance
Risearch.org is a good, full version on Pearl and paying. MnogoSearch - very cumbersome to set up, I do not need so many options. In a number of other options, they are simple stimmers, or none at all of any support for the Russian language. Well, let it be even a stemmer, but the results should have a high relevance.