A Ruby gem with a C extension for high-performance scanning and redaction of sensitive data — API keys, tokens, credentials, IBANs, national IDs, emails, phone numbers, and PII from 15+ countries. Optional Logger formatter, Rails filter_parameters adapter, and Rack middleware. Designed to sanitize text before sending to LLMs, logging systems, or any public/third-party API.

method decorator

Simple and composable validation and coercion of data structures inspired by clojure specs

An implementation of SipHash 1-3, 2-4, etc. in pure Ruby.

Provides a native Doubly Linked List data structure in Ruby, focusing on O(1) performance for head/tail operations and standard Enumerable compatibility.

DotKey provides an elegant way to read, write, and manipulate deeply nested Hashes and Arrays using dot-delimited strings. It supports wildcards for pattern matching, custom delimiters, and flexible handling of missing values - making it ideal for working with complex data structures, configuration objects, and API responses.

A hybrid Ruby/Rust validation gem that compiles a documented subset of dry-validation's declarative schema DSL into a native Rust execution plan while retaining Ruby rule blocks and Ruby-owned dynamic behavior.

Duckling NER without an HTTP service for Ruby

Parses the typically messy content in Darwin Core terms that contain people names

Specifically designed as an OpenStruct-like tool for consuming APIs, dynamic_class lets your classes define their own getters and setters at runtime based on the data instances receive at instantiation.

E11y (Easy Telemetry) - Observability for Rails developers who hate noise. UNIQUE FEATURES: • Request-scoped debug buffering - buffers debug logs in memory, flushes ONLY on errors • Zero-config SLO tracking - automatic Service Level Objectives for HTTP endpoints and jobs • Schema-validated events - catch bugs before production with dry-schema DEVELOPER EXPERIENCE: • Minimal setup — one config block, works with stdout out of the box • Auto-metrics from events (no manual Yabeda.increment) • Rails-first design (follows Rails conventions) • Pluggable adapters (Loki, Sentry, OpenTelemetry, custom backends) COST SAVINGS: • Reduce log storage costs by 90% (request-scoped buffering) • Replace expensive APM SaaS ($500-5k/month → infra costs only) • Own your observability data (no vendor lock-in) PRODUCTION-READY: • Thread-safe for multi-threaded Rails + Sidekiq • Adaptive sampling (error-based, load-based, value-based) • PII filtering (GDPR-compliant masking/hashing) • Performance optimized (hash-based events, minimal allocations) Perfect for Rails 7.0+ teams who need observability without complexity or high costs.

Edit distance algorithms including Levenshtein, Restricted Edit (Optimal Alignment) and Damerau-Levenshtein distances, and Jaro & Jaro-Winkler similarity.

EncodeM v3.0 brings complete M language (MUMPS) subscript encoding to Ruby, supporting numbers, strings, and composite keys with perfect sort order. Build hierarchical database keys like M("users", 42, "email") that sort correctly as raw bytes. This 40-year production-tested algorithm from YottaDB/GT.M powers Epic (70% of US hospitals) and VistA. Perfect for B-tree indexes, key-value stores, and any system requiring sortable hierarchical keys. All types maintain correct ordering when compared as byte strings - no decoding needed.

Ruby implementation of the parsing and computation of ephemerides from NASA/JPL Development Ephemerides DE4xx and IMCCE INPOP

Prints origin of a word

ROM-compatible data mapper

Active Support impelementation in C for the ones who need for speed.

an attempt at a fast_blank for JRuby

A simple example of how to write a Ruby native extension in OCaml

Serialize and deserialize Open Sound Control messages using rtosc