Configuration

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• mega-linter-runnerLocal runner for MegaLinter
• nestjs-configEasy to use Nest configuration module
• centigThe Configuration Management library for your JavaScript application
• exp-configSimple configuration management
• parse-env-stringParse a string containing environment variables to a key/value object
• universal-configConfiguration for your universal Javascript application
• @varlock/bitwarden-pluginVarlock plugin to load secrets from Bitwarden Secrets Manager and Password Manager (and Vaultwarden)
• @artsy/multienvLoad multiple dotenv style environment files.
• dotenv-flow-webpackA webpack plugin that allows you to securely use environment variables within your javascript web application, loading them using dotenv-flow's `.env*` files loading strategy.
• envarLibrary to read environment variables, including npm package config, custom config file, command line and default object
• sync-dotenvKeep your .env in sync with .env.example
• env-vars-doctorEnvironment variable management for monorepos - sync, validate, and diagnose .env files across workspaces
• env2jsonExport environment variables to JSON or JavaScript
• template2envA micro dependency that interpolates environment variables
• dotenv-craCreate React App style dotenv support for Node projects.
• @optique/configConfiguration file support for Optique with Standard Schema validation
• varUse strongly typed environment variables like a boss
• @tltdh61/dotenvrtdbA CLI tool to load environment variables from .env files with remote database support
• middy-envEnvironment variable middleware for the middy framework
• valibot-envtype-safe environment variables with valibot
• @onlineapps/runtime-configRuntime configuration resolver with schema-driven priority (explicit config → ENV → owner defaults)
• @octocodeai/configOctocode unified env + config loader — zero deps, shared by MCP, CLI, extension, agent, and standalone skills.
• env-yamlMinimal YAML .env file loader
• @varlock/astro-integrationAstro integration to use varlock for .env file loading - adds validation, type-safety, and extra security features
• rcfileLoads library configuration in all possible ways
• @beesley/ts-envAn environment variable reader for TypeScript
• envinosSync your local environment variables from external source shared among developers
• aws-param-env-sdkv3Module for synchronously loading AWS SSM Parameter Store values into environment variables, fork of aws-param-env using awsdkv3
• nconf-esmHierarchical node.js configuration with files, environment variables, command-line arguments, and atomic object merging.
• mix-env-fileAllows Laravel Mix to use to a specific .env file
• @nitra/check-envCheck that the critical environment variables are set
• camelspaceTransform flat ENVIRONMENT_VARIABLES into deep { environment: { variables } } objects and vice versa.
• serverless-plugin-static-envReplace environment variables with static strings before deployment. It is for Lambda @ Edge.
• @varlock/azure-key-vault-pluginVarlock plugin to load secrets from Azure Key Vault
• require-environment-variablesRequire specific environment variables. If they don't exist, the application exits
• multi-iniAn ini-file parser which supports multi line, multiple levels and arrays to get a maximum of compatibility with Zend config files.
• yaml-env-defaultsRead yaml file with environment variables substitution
• envsitter-guardOpenCode plugin that prevents agents/tools from reading or editing sensitive .env* files, while still allowing safe inspection via EnvSitter.
• envsitterSafely inspect and match .env secrets without exposing values
• etcConfiguration loader for node.js applications
• parse-pairsParse key-value pairs (like environment variables)
• czA simple config utility for nodejs
• @hubble-ventures/infisicmlDeclarative Infisical secret manifests for monorepos — pull, validate, and diff per-package secrets, with native GitHub Actions support.
• @darkobits/envFunctional environment variable getter/parser.
• envkeyEnvKey secures and simplifies configuration and secrets management.
• @apst/biomeA shareable Biome configuration
• @dotenvx/dotenvx-ext-vault🔐 manage .env.vault files
• local-replProject-specific REPL configuration
• next-runtime-dotenvExpose environment variables to the runtime config of Next.js
• @asafarim/envageSecure, age-based encryption/decryption for .env files across multiple environments and monorepo app folders

• dotenv vs @dotenvx/dotenvx
• convict vs envalid
• conf vs convict
• dotenv vs env-var
• @dotenvx/dotenvx vs dotenv-flow
• env-var vs envalid
• dotenv-expand vs dotenv-flow
• dotenv vs envalid
• dotenv-flow vs env-var
• @dotenvx/dotenvx vs varlock