Packages

Language-agnostic mutation testing library for Elixir, Erlang, and other BEAM languages. Evaluates test suite quality by introducing deliberate bugs into code and verifying that tests catch them. Intelligent file filtering, 6 mutation strategies, parallel execution, multiple output formats.

EssenceMD is a SerumMD theme which presents a minimal and clean look (ported from Essence).

Custom Credo checks for common Elixir/Phoenix anti-patterns and CWE Top 25 security vulnerabilities. Provides 36 comprehensive checks covering code quality, error handling, performance, telemetry, and security (SQL injection, XSS, path traversal, CSRF, SSRF, hardcoded credentials, etc).

Hybrid Retrieval-Augmented Generation (RAG) system for multi-language codebase analysis. MCP server combining static analysis, knowledge graphs, semantic search with local ML, and advanced graph algorithms for AI-powered code understanding.

Library bringing types support to elixir. Allows type validation in compile time.

Struct on steroids: insertion validation, handy pipelining and more.

[Logger backend](https://hexdocs.pm/logger/Logger.html#module-backends) for [`Envío`](http://hexdocs.pm/envio) with `Slack` logging out of the box.

An Elixir client for Consul's HTTP API

The helper application providing tools to convert arbitrary function calls to behaviour-driven calls

Pack of custom functions to enhance the UX with `NimbleOptions`.

The very simple ETS wrapper simplifying cross-process ETS handling (like `Agent`, but `:ets`).

**The tiny wrapper for functions to use them in pipelines.**

Access implementation for XmlBuilder.

The scaffold for the process keeping track of the cluster changes and calling callbacks

Peeper is an Elixir library that provides a `GenServer`-like API with automatic state preservation between crashes. It enables you to embrace the “Let It Crash” philosophy while maintaining valuable state, supporting state/dictionary/ets recovery between crashes.

Set of nifty functions I missed in Elixir core. Currently it provides: [tap]. More coming soon.

Ecto support for `Tempus` library

The very simple ETS wrapper simplifying cross-process ETS handling (like `Agent`, but `:ets`).

Elixir client for ClickHouse, a fast open-source Online Analytical Processing (OLAP) database management system. Forked from https://github.com/balance-platform/pillar to support CH25+

AST-based analyzer for identifying property-based testing candidates in Elixir codebases. Detects pure functions, identifies testable patterns, finds inverse function pairs, and generates concrete property-based test suggestions.