The microsandbox-rb gem provides native bindings to the microsandbox runtime via a Rust extension (magnus). It spins up real microVMs (not containers) in under 100ms, runs standard OCI (Docker) images, and gives you full control over command execution, the guest filesystem, networking, volumes, snapshots, SSH, and secrets — all from an idiomatic, synchronous Ruby API. No daemon, no server to connect to: the runtime is embedded directly in your process.

A min max heap extension for Ruby

A minimal, secure Python interpreter for AI agents — Ruby bindings via Magnus

mq is a jq-like command-line tool for Markdown processing. This gem provides Ruby bindings for mq.

Nagori provides Ruby bindings for fsrs-rs (the `fsrs` crate), a Rust implementation of the Free Spaced Repetition Scheduler (FSRS-6): scheduling, memory-state replay, parameter optimization, and simulation.

Game engine for Ruby

gem nosj is an extremely fast, json-gem-compatible JSON parser and generator for Ruby: Rust and SIMD via the first-party nosj crate, precompiled platform gems with per-platform PGO, partial parsing (JSON Pointer, single and batch), lazy documents that parse a value only when you touch it, file APIs that parse, generate, and query files natively (memory-mapped, so unread pages never leave the disk), allocation-free validation, document statistics from one counting pass, parse errors that carry line, column, and a caret snippet, a one-line JSON module drop-in, and a Rails mode that plugs into ActiveSupport's encoder seam.

Ruby bindings for numaflow sdk

Drop-in Rust backend for OMQ. Same socket API (REQ/REP, PUB/SUB, PUSH/PULL, DEALER/ROUTER, and all draft types), but networking runs on a Tokio runtime inside a native extension compiled via rb_sys. Fully interoperable with the default Ruby engine.

Ruby bindings for the ore.rs Order-Revealing Encryption library

Ruby bindings for the ore.rs Order-Revealing Encryption library

The osprey web-server. Super light weight, a little bit fluttery.

Ruby bindings for the outpunch tunnel client

Tyfoom's fork of the `parquet` gem (github.com/njaremko/parquet-ruby), published while the incremental streaming-write fix is pending upstream. It wraps the official Apache Rust implementation and bounds write memory by streaming row groups to disk instead of buffering the whole file. Drop-in compatible with the upstream gem: the library is still required as `require "parquet"` and exposes the same `Parquet` API.

A small Ruby library for constructing parsers in the PEG (Parsing Expression Grammar) fashion. Parsanol provides Parslet-compatible API with additional features including static frozen parsers and dynamic parsers, with optional Rust native extension for improved performance.

A Ruby gem providing Prawn-compatible API bindings to the pdfcrate Rust PDF generation library using Magnus.

A Ruby gem that provides PDQ functionality

perb allows perf to profile ruby

PGlite for Ruby and Rails

PGlite for Ruby and Rails