Simple cooperative interactors for Ruby

Dead simple configurable user notifications with little overhead.

CrustJSONEncoder is a JSON encoder for Ruby on Rails.

A simple stash

CSV based Ruby decision tables.

CSV based Ruby decision tables.

Cuckoo Filter implementation in Ruby

Converts Cyrillic text to the Roman (Latin) script

Dami is a modern, minimal ORM focusing on a clean query DSL, explicit data validation, and secure attribute protection.

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.