Open-source alternatives to Validation

v8n is a JavaScript data validation library used to verify that values, objects, and arrays meet specific criteria. It functions as a schema-based validator and an asynchronous validation engine, utilizing a fluent API to construct sequences of chainable rules and constraints. The framework is distinguished by its ability to execute promises and network requests during the validation process to determine if a value is valid. It allows for the creation of reusable validation schemas and provides a customizable rule framework where users can define their own logic and configure how error result

EmailValidator is a PHP library for verifying email address syntax, format, and DNS records against technical specifications. It functions as a logic-based checker to ensure email addresses follow standard global formatting and communication rules. The library includes security utilities to identify deceptive characters and spoofing attempts in email addresses. These anti-spoofing tools analyze email strings for Unicode characters that mimic standard Latin letters to prevent fraudulent impersonation. The project covers domain verification through DNS record checks to confirm a destination se

The AWS SDK for PHP is a software development kit that provides HTTP client classes for every supported Amazon Web Service, enabling PHP applications to send authenticated requests and receive structured, typed response objects. It includes a credential resolution chain that automatically locates credentials from environment variables, instance profiles, or configuration files, and supports promise-based asynchronous execution for running multiple API calls concurrently to improve throughput. The SDK distinguishes itself through a middleware pipeline architecture that allows interception and

ow is a type-safe schema validation library for TypeScript that verifies data integrity at runtime. It functions as a runtime validation framework and type guard utility, ensuring that JavaScript values match expected types and schemas before they are processed. The library synchronizes runtime data checks with static TypeScript type definitions, allowing users to extract type definitions directly from validation predicates. This integration enables type narrowing, where a successful validation result refines the variable type for safer usage in the code. The framework uses a chainable API t

TypeSpec is a language for defining cloud API shapes and generating OpenAPI, JSON Schema, and client/server code from a single source of truth. It functions as a protocol-agnostic API designer that models REST, gRPC, and other API protocols using a unified, extensible syntax, with a decorator-based metadata system for attaching metadata, validation rules, and lifecycle visibility to API models and operations. The compiler produces OpenAPI 3.0 specifications and other artifacts, and the tool supports declaring API versions and tracking changes to models, properties, and operations across releas

Elvish is a shell that combines interactive command-line use with a structured scripting language, designed to make both everyday terminal work and automation tasks more predictable and readable. It parses, compiles, and executes code in three phases, catching syntax and variable errors before any code runs, and it aborts execution on command failure by default to prevent silent errors. The shell introduces value-oriented pipelines that pass structured data like lists, maps, and closures between commands, preserving types without serialization. It also mixes traditional byte streams with thes

This project is a collection of specialized shell frameworks that provide object-oriented programming patterns, unit testing tools, and a standard utility library for Bash scripts. It enables the organization of script logic through the implementation of classes, objects, and singleton design patterns to create modular and reusable components. The framework includes a dedicated exception handling library that captures command failures using try-catch blocks and stores error metadata in objects. It also provides a unit testing framework that executes shell commands as independent test cases an

Go Package of validators and sanitizers for strings, numerics, slices and structs

CodeIgniter is a PHP web framework built on the Model-View-Controller pattern, designed for building full-stack web applications. It provides a lightweight toolkit with minimal configuration, organizing application logic into controllers, models, and views for clean separation of concerns. The framework includes a fluent query builder for constructing SQL statements programmatically, PSR-4 autoloading with namespace mapping, and a service-based dependency injection container for managing shared class instances. The framework distinguishes itself through its comprehensive set of built-in tools

ServiceStack is a high-performance .NET web framework designed for building type-safe APIs using strongly-typed request and response objects. It functions as a message-based API engine that decouples business logic from the transport layer, allowing services to be exposed via multiple protocols including HTTP, gRPC, and various message queue providers. The framework is distinguished by its type-safe API generator, which produces native client SDKs and data transfer objects from service metadata across multiple languages. It also includes a distributed service gateway for microservices orchest

is-thirteen is a number validation library and numerical equality checker designed to verify if a given input is equal to the value thirteen. It functions as a data classification tool that identifies this specific value across numerical, textual, and visual input streams. The project includes an image-based number classifier that uses deep learning and neural network analysis to identify visual representations of the number thirteen within uploaded images. The library covers a variety of validation methods, including exact arithmetic equality, approximate value matching within defined toler

Fluent-validator is a Java validation framework designed to enforce data integrity through declarative constraints and automated service-layer checks. It provides a structured environment for defining validation logic that integrates with the JSR 303 specification, allowing developers to maintain consistent data quality across complex object hierarchies and application boundaries. The framework distinguishes itself through a fluent interface that enables the orchestration of validation chains, allowing for readable and maintainable rule sequences. It supports advanced execution control, inclu

ozzo-validation is a programmable data validation library for Go that verifies structs, maps, and primitive types using a declarative, rule-based approach. It functions as an interface-based validator, allowing for the recursive checking of nested data structures and custom types without the use of struct tags. The framework distinguishes itself as a context-aware validation engine, supporting the propagation of request-scoped data to rules that depend on external state. It provides extensive extensibility through custom rule definitions and the ability to override default failure text with l

EquinoxProject is an ASP.NET 9 web application template and reference implementation for building enterprise software. It provides a structural boilerplate centered on clean architecture, domain-driven design, and the separation of read and write operations through a command query responsibility segregation framework. The project incorporates event sourcing to track the history of business entities as a sequence of events for auditing and state reconstruction. It utilizes a layered approach to decouple business logic from external dependencies and frameworks. The system includes capabilities

Vorpal is a Node.js interactive CLI framework and terminal user interface library used to build extensible command-line shells. It functions as an interactive command-line parser that converts string input into executable functions, managing the lifecycle of terminal sessions and command routing. The framework is distinguished by a plugin-based extension architecture that allows external modules to register new commands, shared behaviors, and complete command suites into the core environment. It supports the creation of custom shell environments with specialized namespaces and a system for pe

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Ava is a test runner for JavaScript and TypeScript designed to execute test suites with a focus on concurrency and isolation. It serves as a concurrent test executor that runs test files in parallel across multiple processes to reduce total runtime and prevent state leakage between suites. The project features a built-in snapshot testing framework that saves large data structures to disk and compares subsequent executions to detect regressions via diffs. It is also compatible with the Test Anything Protocol, allowing it to export results for use with external reporting tools. Its capability

Selenoid is a powerful implementation of Selenium hub using Docker containers to launch browsers.

HTTP assertions for Oak made easy via SuperDeno. 🐿 🦕

Super-agent driven library for testing Deno HTTP servers.

HTML minifier for Python frameworks (not only Django, despite the name).

++++++++ splinter ++++++++

CodeceptJS is a NodeJS end-to-end testing framework designed for automating acceptance tests across web, mobile, and desktop applications using a unified API. It serves as a cross-platform test automator and a behavior-driven development tool that maps human-readable feature files to technical step definitions. The framework features AI-powered test maintenance that uses machine learning to automatically identify and repair broken element selectors. It includes capabilities for autonomous test generation and a server that allows external agents to control tests and debug browser sessions in r

Validate and sanitize arrays and objects.

Zod is a TypeScript-first schema declaration and validation library designed to ensure end-to-end data integrity. It functions as a runtime type guard, allowing developers to define complex data structures through a declarative, chainable syntax. By using these schema definitions, the library automatically derives static TypeScript types, eliminating the need for manual type duplication and ensuring that runtime data matches expected application contracts. The library distinguishes itself through functional schema composition, which enables the creation of hierarchical structures by nesting a