parqeye is a command-line tool for viewing Parquet files. It allows users to check the contents, schema, and metadata directly in the terminal, featuring a tab-based interface for easy navigation. You can visualize data, explore schemas, and access row group statistics efficiently.

SimpleCrypt is a Rust-based command-line tool designed for secure file and directory encryption using AES-256-CBC and PBKDF2 key derivation. It offers features like progress feedback, secure memory practices, and comprehensive error handling across multiple platforms, while emphasizing strong password usage and secure password management. Users are encouraged to follow best practices for encryption and data handling to ensure security.

s3grep is a command-line tool designed for searching logs and unstructured content in Amazon S3 buckets, offering features like parallel searches, .gz file support, and error handling. It allows users to perform case-sensitive or insensitive searches with options for line number output and progress tracking. Built in Rust and utilizing Localstack for testing, s3grep simplifies cloud-native log analysis.

run is a polyglot command runner and smart REPL designed for developers to script, compile, and iterate in over 25 programming languages using a unified interface. Built in Rust, it simplifies the development process by eliminating the need for multiple compilers and tools, making it ideal for beginners, students, and experienced developers alike. Its architecture ensures performance, reliability, and ease of use across different platforms.

A new Ruby management tool called rv is being developed to improve dependency and Ruby version management by combining features from existing tools like Bundler and Python's uv. Written in Rust, rv aims to provide fast and isolated execution of Ruby scripts and commands, simplifying the development process by automatically managing dependencies and Ruby versions. The project is led by a team that includes notable contributors from the Ruby community.

lstr is a fast and minimalist directory tree viewer written in Rust, offering both classic and interactive TUI modes for exploring project structures. It features customizable color themes, Git integration, and smart filtering options, making it a powerful tool for developers. Installation is straightforward on macOS and NetBSD, with additional configuration options for color support in different operating systems.

Baker is a command-line tool designed to facilitate the quick scaffolding of new projects, featuring language-independent hooks for automating routine tasks. Written in Rust, it is available as a standalone binary with installation options for various platforms. The tool supports templating and customization, making it adaptable for different project needs.

The GitHub repository "hist-rs" by noamteyssier presents an efficient command-line tool for counting unique lines in files, boasting a performance improvement of up to 25 times compared to the traditional `sort | uniq -c` method. The tool supports various functionalities including filtering lines by patterns and adjusting output thresholds. Benchmarks indicate significant performance advantages over other similar tools.