Configuration GitHub Repositories (2026) · Open Source Tools

AI-safe .env files: Schemas for agents, Secrets for humans.

DeepSeek Harness (DSH) backup & restore plugin — export, import, migrate and sync your complete DSH configuration, plugins, MCP servers, skills and workspace. One-click migration to another machine.

The home of the CUE language! Validate and define text-based and dynamic configuration

A configuration as code language with rich validation and tooling.

Customize Claude Code's system prompts, create custom toolsets, input pattern highlighters, themes/thinking verbs/spinners, customize input box & user message styling, support AGENTS.md, unlock private/unreleased features, and much more. Supports both native/npm installs on all platforms.

KCL Language Core and API

Manage your dotfiles across multiple diverse machines, securely.

The simplest config loader for Go that reads/watches from file, env, flag and clouds (AWS, Azure, GCP).

Flexible, reusable and concise configuration for Kubernetes

A simple, zero-dependencies library to parse environment variables into structs

Provides an improved replacement for the array_replace PHP function

A dotfile manager and templater written in rust 🦀

YAML templating tool that works on YAML structure instead of text

Distributed Big Data Orchestration Service

Batfish is a network configuration analysis tool that can find bugs and guarantee the correctness of (planned or current) network configurations. It enables network engineers to rapidly and safely evolve their network, without fear of outages or security breaches.

.NET Components for Externalized Configuration, Database Connectors, Service Discovery, Logging and Distributed Tracing, Application Management, Security, and more.

A boilerplate-free Kotlin config library for loading configuration files as data classes

A Python package for determining platform-specific directories (e.g. user data, config, cache, logs). Handles the differences between macOS, Windows, Linux/Unix, and Android so you don't have to.

Get rid of the boilerplate code in properties based configuration.

Configuration library for Ruby gems and applications