ripgrep

A high-performance command-line search tool that combines the speed of grep with the user-friendly defaults of the silver searcher.

Andrew Gallant (BurntSushi) engineered ripgrep in Rust to solve the speed bottlenecks of legacy search utilities. It consistently outperforms grep, ack, and ag by utilizing a finite automaton engine and SIMD-accelerated literal searches. The tool handles large-scale codebases efficiently: it automatically respects .gitignore rules and skips hidden or binary files. This focus on performance and sensible defaults makes it the go-to choice for developers managing millions of lines across complex directory structures.

https://github.com/BurntSushi/ripgrep