Open-source alternatives to Dotenv

This library is a PHP environment variable loader and configuration parser. It extracts key-value pairs from local text files to populate global server and system environment arrays, ensuring that sensitive credentials and application settings remain separate from the source code. The tool implements twelve-factor app configuration principles by mapping local files to process-level variables. It utilizes a regex-based parser to identify variable assignments while stripping comments and whitespace, and it includes guards to prevent local configuration files from overwriting existing host-level

Figaro is a configuration manager for Ruby on Rails applications that loads key-value pairs from YAML files and injects them into environment variables. It functions as a configuration validator, raising errors during startup if mandatory configuration keys are missing from the environment to prevent runtime crashes. The project includes a command-line utility for synchronizing local environment settings to remote hosting platforms and production servers. This allows for the generation of remote configuration files based on local source data. The system supports environment-specific settings

This project is a comprehensive guide to architectural standards and coding patterns for developing maintainable applications within the Laravel framework. It focuses on clean code standards, applying the single responsibility and DRY principles to ensure codebase predictability and consistency. The guide emphasizes decoupling components by moving business logic into service layers and shifting input validation into dedicated request classes to keep controllers lean. It advocates for the use of a service container and dependency injection to reduce class coupling and improve testability. The

Dynaconf is a configuration management library for Python applications that provides a unified system for loading, validating, and managing settings. It aggregates configuration data from multiple files, environment variables, and external stores into a single object using a defined precedence order. The project distinguishes itself through a layered environment manager that separates settings into distinct profiles, such as development and production. It includes a declarative validation framework to enforce data rules and type constraints during the loading process, as well as an external s

Pkl is a configuration-as-code language used to define, validate, and generate structured configuration files. It functions as a type-safe configuration generator that enforces data integrity through a strongly-typed schema, ensuring configuration values meet defined constraints and types during evaluation. The project distinguishes itself by acting as both a configuration file generator and a binding generator. It transforms high-level programmable definitions into static formats such as JSON, YAML, or XML, and produces language-specific source code to synchronize settings and provide type s

Manage Procfile-based applications

This project is a command-line utility that executes processes by injecting environment variables from local configuration files. It functions as a runtime wrapper, allowing developers to manage application settings and process execution contexts without modifying global system variables. The tool distinguishes itself by supporting dynamic configuration loading, which allows for the use of files that export objects or promises to compute values at runtime. It provides granular control over environment management, including the ability to group variables into named collections, protect existin

This project is a full stack project generator and boilerplate for the MEAN stack, combining MongoDB, Express, Angular, and Node.js. It provides a pre-configured architecture and scaffolding tools to bootstrap JavaScript applications with a database, backend server, and frontend framework. The project includes a Dockerized application template to ensure consistent deployment and local development across different hardware configurations. It features a Node.js API scaffold that integrates token-based security, request validation, and interactive API documentation. The codebase covers broader

dotenvx is a cross-platform command-line tool that encrypts .env files using public-key cryptography and decrypts them at runtime, injecting the plaintext secrets into a process environment before execution. It treats encrypted environment files as self-contained vaults that are loaded and decrypted entirely in memory each time a command runs. What sets dotenvx apart is its ability to armor the private decryption key itself with a passphrase, allowing that key to be stored remotely and retrieved only when decryption is needed. A single encrypted vault file can be bound to multiple per-envir

Kong is a declarative command line interface framework and parser for Go. It maps flags and positional arguments directly into typed Go structures using struct tags, allowing developers to define terminal interfaces through data models rather than manual parsing logic. The project functions as a configuration mapper that populates Go structures from a combination of command-line arguments, environment variables, and JSON files. It distinguishes itself by providing a dependency injection container to pass external services into command handlers and a plugin architecture for dynamic command reg

koanf is a configuration management library for Go designed to load, merge, and unmarshal application settings from multiple sources into structured objects. It functions as a multi-source config loader that aggregates data from environment variables, files, and remote providers into a single unified map. The system utilizes a pluggable architecture for parsing and data abstraction, allowing it to transform bytes from formats such as JSON, YAML, and TOML into nested maps. It supports dynamic configuration watching to monitor external sources and trigger automatic reloads when settings change.

envconfig is a Go configuration decoder and environment variable mapper that deserializes environment variables into structured Go data types. It provides tools for validating mandatory fields and ensuring application configuration adheres to the external configuration patterns of twelve-factor app compliance. The library features a help generator that creates formatted usage text based on struct definitions to describe expected environment variables. It also includes a validation tool capable of detecting unused environment variables that match a specific prefix but do not correspond to any

Hydra is a hierarchical configuration framework and type-safe configuration manager. It is designed to manage complex application settings through composable configuration files and command-line overrides, ensuring that configuration values match expected data types during instantiation. The framework functions as a dynamic object instantiator that creates class instances directly from hierarchical configuration values and nested objects. It also operates as a hyperparameter sweep orchestrator and cluster job launcher, enabling the execution of multiple application runs across parameter range

HCL is a configuration language implementation designed for parsing, evaluating, and encoding structured settings through the use of blocks and attributes. It functions as a configuration AST parser and a schema-based decoder that maps attributes and blocks to internal data structures using predefined rules. The project includes an expression evaluation engine that resolves dynamic values and cross-references through multi-phase processing of variables and functions. It also provides a configuration file formatter to standardize the layout and indentation of source code for consistent visual

Task is a YAML-based task runner and build tool used to define and automate development workflows. It functions as a dependency-based build system and cross-platform task automator, allowing users to execute shell commands across different operating systems using a declarative configuration file. The project operates as an incremental build tool, utilizing file fingerprints and checksums to track state and avoid redundant work by determining if tasks are up to date. It manages execution via a dependency graph to ensure prerequisites are completed before target commands run. The system includ

This project is a collection of curated and standardized Docker base images that serve as reliable starting points for building containerized applications. It functions as an OCI container image repository and a build template library, providing a central source of truth for images that adhere to Open Container Initiative standards for portability. The project utilizes an automated image lifecycle pipeline to build, tag, and push images, ensuring that dependencies remain current and security patches are applied. It specifically supports cross-platform distribution by providing a multi-archite

The AWS Cloud Development Kit is an infrastructure-as-code framework that enables developers to define and provision cloud resources using familiar programming languages. By utilizing construct-based synthesis, it translates high-level, object-oriented code into declarative templates, allowing for the automated management of complex cloud environments through a centralized, code-driven control plane. The framework distinguishes itself through its ability to model infrastructure as a dependency-aware resource graph, ensuring that components are provisioned and updated in the correct order. It

env is a Go library that reads environment variables and populates the fields of a Go struct according to tag directives. It uses reflection to iterate over struct types and tags at runtime, mapping environment variable names to struct fields and applying parsing behavior defined in struct tags. The library supports required field validation, returning errors when marked fields are missing or empty after parsing. It also provides default value fallback from struct tags when environment variables are not set, environment variable expansion that recursively substitutes references within values,

Sanic is an asynchronous Python web framework designed for building high-performance APIs and services. It operates as a production-ready ASGI web server, utilizing a non-blocking event loop to handle concurrent requests and maximize throughput. The framework is built to support scalable architectures, offering built-in worker process management to distribute traffic across available CPU cores. What distinguishes Sanic is its focus on modularity and developer-centric tooling. It features a blueprint-based system for organizing complex applications into pluggable components, alongside a robust

nconf is a configuration management library for Node.js that aggregates application settings from multiple sources into a single, unified store. It provides a centralized mechanism to manage parameters by merging data from command-line arguments, environment variables, and local files. The library distinguishes itself through a hierarchical provider system that enforces strict precedence rules when conflicting values are present. It supports atomic object merging to maintain consistent data structures and utilizes lazy loading to ensure that configuration sources are read only when accessed a

node-config is a configuration manager for Node.js applications that loads, merges, and manages application settings across different deployment environments. It functions as a hierarchical configuration loader that defines default settings and overrides them based on the environment, hostname, or instance ID. The project provides an environment variable mapper to link external variables and command line arguments to internal configuration structures. It also includes an external configuration client to fetch settings from remote providers during the bootstrap process. The system supports cu

This project is a comprehensive collection of web development reference guides and technical cheat sheets. It provides a curated set of markdown-based documentation designed to help developers quickly locate syntax patterns and API examples for common web technologies and programming languages. The repository serves as a specialized reference library covering several distinct technical domains. It includes extensive guides for CSS, focusing on selectors, Flexbox, Grid, and responsive layout properties, as well as a DevOps command reference for Docker, Kubernetes, AWS, Ansible, and general she

This project is a command-line task runner designed to manage project-specific workflows through a centralized, configuration-driven interface. It functions as a declarative tool for organizing build logic, environment variables, and task dependencies into a structured format, enabling the automation of complex development pipelines. The tool distinguishes itself by providing a shell-agnostic execution layer that ensures consistent behavior across Windows, macOS, and Linux. It supports advanced workflow orchestration by constructing directed acyclic graphs to manage task prerequisites, while

Easiest way to add multi-environment yaml settings to Rails, Sinatra, Padrino and other Ruby projects.

Quarkus is a Kubernetes-native Java framework designed for building high-performance, memory-efficient applications. It utilizes ahead-of-time native compilation to transform Java code into standalone, optimized binaries that eliminate the need for a virtual machine, enabling rapid startup and reduced memory consumption. By performing code augmentation during the build phase, it shifts heavy processing tasks away from runtime, ensuring that applications are optimized for cloud-native environments. The framework distinguishes itself through a unified approach to reactive and imperative program

confd is a dynamic configuration templating engine and manager that generates local application configuration files using data from environment variables and distributed key-value stores. It functions as a client for stores such as etcd and Consul, monitoring these sources for changes to automate the creation and update of files on the local filesystem. The tool serves as an application process reloader, capable of automatically restarting or signaling dependent applications when their underlying configuration files are modified. This ensures that updated settings from a centralized source of

Travis CI is a continuous integration platform and CI/CD pipeline orchestrator that automates the testing and building of code changes from version control systems. It functions as a multi-language test runner and build infrastructure manager, ensuring software quality through automated testing across various programming languages and runtimes. The platform is distinguished by its use of virtual-machine-based isolation for reproducible environments and a configuration-driven approach to pipeline generation. It supports complex testing strategies through parallel matrix execution, allowing job