OSV is a high-performance CSV parser for Ruby, built using Rust, and offers both hash-based and array-based row formats. It provides significant speed advantages over the standard Ruby CSV library and other CSV gems, especially when using the array-based mode. Users can easily integrate OSV into their applications by adding it to their Gemfile or installing it directly via gem install.

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.