Routlets provides free text searching of router configurations. Normal search engine rules apply - e.g. search for multiple words, use AND and OR logic, or try fuzzy matching for an approximate spelling.
Searching is fully indexed - the results are presented immediately, with no need connect to any routers.
Search results can be shown by relevance, or grouped by location.
Multiple search results can be shown side by side, and a search history is also kept - often needed when making sense of a network.
A second more structured style of search is available, by declarations.
Searching by declarations is done by example. Start with a configuration section on one router, and then search for the same edit path (or configuration level) on other routers.
This provides a simple and powerful way of controlling similar configurations across a network. Any two matches in the search results can then be compared to each other.