Open-source alternatives to Imaskjs

Cleave.js is a JavaScript library that applies real-time visual formatting to form fields as users type. It provides specialized utilities to enforce visual patterns for credit cards, phone numbers, dates, times, and large numerals. The library includes predefined formatting rules for common data types, such as detecting credit card issuers to apply correct spacing and managing country-specific regional patterns for international phone numbers. It also supports large numeral grouping using Western, Indian, and Chinese numbering systems. Users can define custom input patterns using specific b

PhoneNumberKit is a Swift framework for parsing, formatting, and validating international phone numbers according to global numbering standards. It provides a system of lookup tables, structural parsers, and validation tools to handle the complexities of international telephone numbering. The library converts raw strings into structured objects containing country codes and national numbers. It translates international dialing codes into full country names and verifies whether phone number strings are logically possible and conform to specific regional numbering plans. The project includes ut

This library provides a set of tools for formatting numeric values and masking user input within React components. It includes a customizable text input wrapper that synchronizes raw numeric values with formatted display strings and a specialized input masking component for enforcing string patterns and templates during data entry. The project features a localized number formatter that utilizes browser localization APIs to apply regional grouping, prefixes, and suffixes. It supports specialized financial formatting, such as displaying negative values in parentheses, and provides the ability t

react-final-form is a React form state management library that provides a framework for declarative form validation and the orchestration of dynamic input fields. It utilizes a subscription-based state manager to trigger interface updates only for the specific fields that change during user input, which optimizes rendering by limiting unnecessary component re-renders. The library functions as a dynamic input field orchestrator, allowing users to add, remove, or reorder lists of form fields. It manages complex form state through a system that supports conditional field rendering and real-time

jQuery Knob is a rotatable dial UI widget for web pages that translates circular drag movements into numerical values. It is a touch-enabled input component rendered via the HTML5 canvas API, providing a graphical interface for numerical data entry through the jQuery library. The component is highly customizable, allowing for adjustments to colors, fonts, rotation constraints, and arc dimensions. It supports a variety of interaction methods, including mouse, mousewheel, keyboard, and touch events. The widget includes systems for managing input constraints such as minimum and maximum values a

Validate.js is a JavaScript library designed for declarative data validation and form processing. It provides a framework for verifying complex objects and individual data points against structured constraint schemas, ensuring that application state and user input meet defined requirements. The library distinguishes itself through its support for asynchronous validation, allowing for verification tasks that require external data sources or server-side checks. It includes a built-in utility for extracting and normalizing data from web forms, which cleans input by removing whitespace and empty

Backbone.validation is a JavaScript library designed to enforce data integrity within Backbone.js models. It provides a framework for defining declarative validation schemas that intercept attribute changes, ensuring that data meets specified business requirements before it is committed to the model. The library distinguishes itself by tightly coupling model-level validation with user interface components. It features an event-driven binding system that monitors model states and automatically triggers interface updates, providing real-time feedback as users interact with forms. This approach

Taiga UI is an Angular UI component library and accessible design system used for building enterprise web interfaces. It provides a comprehensive collection of reusable interface elements and layout tools, functioning as a mobile-first UI kit with responsive components that adapt to different device capabilities. The library distinguishes itself through an integrated data visualization library featuring various chart types and a dedicated form management framework with built-in validation and formatting for specialized data. It also features AI-driven development workflows by integrating comp

Valibot is a modular, type-safe schema library for validating and parsing structural data in TypeScript environments.

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

Hibernate Validator is a reference implementation of the Jakarta Validation specification, serving as a framework for enforcing data integrity across Java applications. It functions as a declarative validation engine that processes object constraints to ensure that application state remains consistent. By utilizing metadata-driven rules, the library validates object properties, method parameters, and nested collections to maintain data standards throughout an application's layers. The library distinguishes itself through its ability to perform static analysis on validation configurations, ide

Odoo is an integrated enterprise resource planning suite designed to manage core organizational processes, including accounting, inventory, manufacturing, and human resources, within a single platform. It functions as a modular business application framework that allows for the development and deployment of specialized modules, supported by a low-code environment that provides visual tools for creating custom workflows and data-driven interfaces. The platform distinguishes itself through a highly extensible architecture that enforces strict multi-tenant data isolation, ensuring that records r

Pen is a visual WYSIWYG markdown editor and live editing interface that converts markdown patterns into rich text elements in real-time. It serves as a tool for markdown content authoring and transforming editor state into standard markdown strings for export. The editor features a customizable text interface with a formatting toolbar for text-styling actions. It includes systems for hyperlink management and the automatic conversion of specific character sequences into structured headings, lists, blockquotes, and code blocks during the input process. The project provides capabilities for rea

Inputmask is a JavaScript library that serves as a client-side input formatter and form input validator. It constrains text input fields to specific formats, such as phone numbers and dates, to ensure data consistency. The project provides guided text entry and user input validation to prevent formatting errors. It standardizes how structured information is entered in web browsers to support more reliable server-side processing. The library manages data validation and formatting by enforcing predefined patterns on user entry. It handles real-time input interception, cursor-position tracking,

This project provides a visual credit card form UI component and payment input visualizer. It creates an interactive checkout interface that displays a dynamic visual representation of a credit card, updating in real time as users enter payment details into a form. The interface includes localized payment capabilities, allowing the replacement of default labels and validation messages with custom strings to support multiple languages. Users can customize visual fields and input placeholders to control the default text and symbols displayed during the checkout process. The system manages real

This project is a JSON schema form builder and dynamic form generator. It functions as an API-driven data collector that creates customizable input fields and layouts based on JSON schema definitions. The system serves as a schema-based input validator, enforcing data integrity through predefined schemas and providing real-time feedback to users. It allows for the creation of web forms where input types, labels, and placeholders can be modified without changing the source code. The tool manages the end-to-end workflow of interactive user input, covering dynamic form generation, client-side d

This project is an international phone number library providing tools for parsing, formatting, and validating phone numbers across multiple programming languages. It functions as a parsing utility, a formatting engine, and a validation tool to ensure phone number strings are transformed into structured objects and standardized display formats. The library includes a telecom metadata resolver to retrieve geographical, carrier, and timezone information associated with specific number ranges. It differentiates itself by identifying phone number types, such as mobile, fixed-line, or VoIP, and cal

Remeda is a type-safe functional utility library for TypeScript designed for building data transformation pipelines. It provides a toolkit of helper functions for manipulating arrays and objects while maintaining strict type integrity throughout the process. The library is characterized by its support for both data-first and data-last calling styles. It utilizes lazy evaluation to process data collections, evaluating transformations only when the final result is requested to avoid creating intermediate collection copies. The toolkit covers collection manipulation, function composition, and t

PRQL is a functional, modular data transformation language that serves as a compiler for relational data pipelines. It allows developers to write expressive, pipelined queries that are translated into standard SQL dialects. By abstracting complex data manipulation into a readable, sequential syntax, the project enables the construction of maintainable workflows that remain independent of specific database engines. The language distinguishes itself through a robust compilation infrastructure that performs type validation and relational algebra analysis before generating target-specific code. I

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

This project is a reusable React datepicker component providing an accessible, localized interface for selecting dates and times within web applications. It functions as an input field that triggers a calendar popup for precise temporal data entry. The component is designed for flexibility, allowing for a customizable calendar layout and the integration of custom external elements to trigger the picker. It supports marking holidays with custom labels and styles and implements date selection restrictions through boundaries, exclusion lists, and filter functions. The system includes comprehens

Xan is a command-line tool and data transformation engine for processing CSV, TSV, and JSONL datasets. It functions as a processor for compressed files, enabling random access and seeking within gzipped and Zstd files, and serves as a converter for specialized bioinformatics data formats. The tool handles large datasets without requiring full memory loads by utilizing stream-based processing. It provides capabilities for merging, sorting, and deduplicating massive files, as well as converting data between various tabular formats. The project covers a broad range of data wrangling and analysi

This project serves as an educational and practical resource for mastering machine learning workflows using Python. It provides a comprehensive collection of code examples and exercises designed to guide users through the implementation of predictive systems, ranging from fundamental algorithms to deep learning architectures. The repository distinguishes itself by offering a structured approach to both classical machine learning and neural network training. It covers the full lifecycle of model development, including the orchestration of reusable data transformation pipelines, advanced ensemb

This project is a reactive state management library designed for handling complex form data and validation logic. It utilizes observable-based patterns to synchronize user interface components with underlying data models, ensuring that form states remain consistent throughout an application. The library provides a structured approach to managing form initialization, field tracking, and lifecycle events. The library distinguishes itself through its support for deeply nested data structures and hierarchical composition, allowing for recursive validation and dynamic updates within complex object

Daft is a distributed dataframe library and multimodal data processor designed to handle large-scale structured and unstructured data. It functions as a vectorized execution engine that processes tables alongside images, audio, and video, utilizing a unified schema to manage diverse data types. The project distinguishes itself by combining distributed data engineering with large-scale AI inference. It provides an AI data pipeline for batch-optimizing model prompts and generating high-dimensional text embeddings, while utilizing zero-copy memory sharing to execute custom Python functions witho

Luban is a game configuration toolchain designed to convert spreadsheet-based data into optimized binary formats and type-safe source code for multiple languages. It functions as a comprehensive suite for configuration validation, data serialization pipelines, and code generation to ensure data consistency across different platforms. The system features a multi-language code generator that produces strongly-typed data classes from schemas, eliminating the need for reflection. It includes a localization manager for exporting translated text and assets with locale-specific patching, and a seria

sChandra is a document processing platform that converts images, PDFs, Word documents, spreadsheets, and other formats into structured output such as HTML, Markdown, or JSON while preserving layout. It can also extract specific data fields from invoices, contracts, or reports using user-defined JSON schemas, with citations back to source locations. The service supports form filling in PDF and image documents, document generation from Markdown, and extraction of tracked changes from Word files. The platform distinguishes itself with pipeline-based processing chains that combine multiple proces