frum vs ServBay

frum is a free Ruby version manager written in Rust. It can install and uninstall Ruby versions, list available or installed versions, and select a global or local version. It also works with .ruby-version files, so projects can specify which Ruby version frum should use. The project describes its implementation as pure Rust and says it does not use ruby-build. Installation methods listed include Homebrew or Linuxbrew, Arch Linux packages, Cargo, and release binaries. The README provides setup instructions for Bash, Zsh, and Fish and lists shell auto-completion. Ruby installation accepts configuration options such as an OpenSSL directory and jemalloc allocator selection. The README reports a benchmark in which evaluating frum init ran about six times faster than evaluating rbenv init. The project is MIT licensed and welcomes contributions, issues, and pull requests. Linux and macOS are listed as supported platforms; Windows is mentioned in the project’s goals. Its latest listed release is v0.1.2.

ServBay manages local web development environments on macOS and Windows, bringing language runtimes, databases and web servers into one desktop tool. It includes versions of PHP, Python, Node.js, Go, Java,.NET, Ruby and Rust, plus Apache, NGINX and Caddy. Developers can assign runtime versions to projects and switch installed service versions through its management interface. Local services include DNS, mail testing, MinIO object storage and RabbitMQ; built-in PKI supports local HTTPS, and ServBay can manage certificates through ACME. Its MCP server works with Claude Code, Cursor, Codex and other MCP clients, which can manage services and packages, create sites with local DNS and SSL, operate databases, read logs and run diagnostics. The AI Gateway provides one local endpoint for cloud and local model providers, with usage tracking, virtual keys and automatic fallback. ServBay says provider API keys stay encrypted on the user’s machine and are not uploaded. The free plan costs nothing and is limited to five websites and five DNS records. Pro starts at $9.90 a month; a 7-day trial is listed.