DNS Coffee collects and archives stats from DNS Zone files in order to provide insights into the growth and changes in DNS over time.
The website includes information such as the size of different zones. It tracks over 1200 zone files.
It provides searching through the zones files based on domain names, name servers, or IP addresses. It can also visualize the relationship between a domain, the parent zones and the name server in what they call a "Trust Tree".
The code search searches through all the open-source projects included in the Debian project. It supports exact searches and regex matches. Results can be filtered by file type, package, or path.
The Matrix search is a very customizable search engine for flights. It has a concise interface showing the connections, price, layovers, and notes, like long layovers. There is a time bars view that shows all flights on a timeline, showing the start and end times. Flights can be searched by stops, exact or fuzzy dates, and in an advanced mode even includes routing and extension codes.
grep.app provides a regex search over a large part of public GitHub repositories. It provides exact string search and RE2 regex expressions, both features not supported by GitHub. Results can be filtered by repository, path, or language (file type).
query.rs offers searching in various rust sources. This includes searching the std documentation for types, functions, or function signatures. Crates can be searched by name and similar by types and functions. It includes further resources, like error codes, lints, and more.