Ruby bindings (via Rust/rb-sys) for lz4rip, a pure-Rust LZ4 implementation. Block-format and frame-format compress/decompress with optional dictionary support and COVER-based dictionary training. Ractor-safe.

magicprotorb lets you `require "magicprotorb/foo/bar_pb"` and have foo/bar.proto compiled to descriptors and registered at require time. The dotted require path mirrors the canonical proto path 1:1, so the require name, the file location, and the descriptor name can never drift apart. A small Rust extension (built on the pure-Rust protox compiler) turns .proto text into a FileDescriptorSet, which is then registered through the stock protobuf DescriptorPool — making the resulting message classes indistinguishable from generated ones.

ruby integration of markdown-it-rust (with custom plugins)

An unofficial high-performance Rust-based gem for reading MaxMind DB files. Provides API compatibility with the official maxmind-db gem while leveraging Rust for superior performance. This library is not endorsed by MaxMind.

CSS parser/transformer for Mayu Live

Simple gem for quick MCP server creation

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

NATS NKeys for Ruby, as a native extension over the Rust `nkeys` crate: Ed25519 keypairs across every key role, and the x25519 XKey sealing used by NATS auth callout. Named nkeys-rb because the plain `nkeys` gem name is taken by an unrelated pure-Ruby implementation.

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