1.colinhacks / zod
TypeScript-first schema validation with static type inference
- typescript
- schema-validation
- type-inference
- runtime-validation
- static-types
+982 stars
from 43,284 · score 6.89
Trending repositories
Ranked by Attention Score: stars gained over the last 90 complete days
53 repositories by Attention Score · Aug 8, 2026 – Nov 5, 2026 (UTC)
2.pydantic / pydantic
Data validation using Python type hints
- validation
- parsing
- json-schema
- pydantic
- python
- hints
- +5 more
+919 stars
from 28,399 · score 6.82
3.open-circle / valibot
The modular and type safe schema library for validating structural data 🤖
- bundle-size
- modular
- parsing
- schema
- type-safe
- typescript
- +8 more
+178 stars
from 8,874 · score 5.19
4.go-playground / validator
:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
- validation
- translation
- error-handling
+174 stars
from 20,043 · score 5.16
5.unionai-oss / pandera
A light-weight, flexible, and expressive statistical data testing library
+105 stars
from 4,411 · score 4.66
6.ajv-validator / ajv
The fastest JSON schema Validator. Supports JSON Schema draft-04/06/07/2019-09/2020-12 and JSON Type Definition (RFC8927)
- json-schema
- validator
- ajv
+101 stars
from 14,772 · score 4.62
7.AfterShip / email-verifier
:white_check_mark: A Go library for email verification without sending any emails.
+61 stars
from 1,592 · score 4.13
8.munich-data-engineering / reflect-cpp
A C++20 library for fast serialization, deserialization and validation using reflection. Supports JSON, Avro, Boost Serialization, BSON, Cap'n Proto, CBOR, Cereal, Command line interfaces, CSV, Environment variables, flexbuffers, msgpack, parquet, TOML, UBJSON, XML, YAML, yas / msgpack.org[C++20]
+55 stars
from 1,914 · score 4.03
9.typestack / class-validator
Decorator-based property validation for classes.
- validation
- validator
- decorators
- typescript
+54 stars
from 11,799 · score 4.01
10.go-ozzo / ozzo-validation
An idiomatic Go (golang) validation package. Supports configurable and extensible validation rules (validators) using normal language constructs instead of error-prone struct tags.
- validation
- golang
- go
- ozzo
- validator
+47 stars
from 4,109 · score 3.87
11.validatorjs / validator.js
String validation
- validation
- sanitization
- javascript
- node
- input
- validator
- +4 more
+40 stars
from 23,704 · score 3.71
12.python-jsonschema / jsonschema
An implementation of the JSON Schema specification for Python
- json-schema
- json
- validation
- schema
- jsonschema
+33 stars
from 4,960 · score 3.53
13.Propaganistas / Laravel-Phone
Phone number functionality for Laravel
- laravel
- libphonenumber
- validation
- phone
+27 stars
from 3,014 · score 3.33
+26 stars
from 23,627 · score 3.30
15.FGRibreau / mailchecker
:mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers.
- email-validation
- email-verification
+21 stars
from 1,897 · score 3.09
+19 stars
from 11,617 · score 3.00
17.marshmallow-code / marshmallow
A lightweight library for converting complex objects to and from simple Python datatypes.
- serialization
- deserialization
- validation
- python
- marshalling
- serde
- +1 more
+18 stars
from 7,225 · score 2.94
18.marmelroy / PhoneNumberKit
A Swift framework for parsing, formatting and validating international phone numbers. Inspired by Google's libphonenumber.
- phone-number
- google-libphonenumber
- swift
- parsing
- validation
- contacts
- +1 more
+17 stars
from 5,378 · score 2.89
19.Oudwins / zog
Go with Zod inspired simple schema validation
- error-handling
- golang
- runtime-validation
- schema-validation
- templ
- translation
- +1 more
+17 stars
from 1,203 · score 2.89
20.CuyZ / Valinor
Dependency free PHP library that helps to map any input into a strongly-typed structure.
+14 stars
from 1,519 · score 2.71
21.sindresorhus / is
Type check values
- type-detection
- type-check
- is
- assertions
- typescript
- node-module
- +1 more
+13 stars
from 1,786 · score 2.64
22.Respect / Validation
The most awesome validation engine ever created for PHP
- php
- validation
- validation-engine
- fluent-interface
- validator
- standalone
- +1 more
+10 stars
from 6,025 · score 2.40
+10 stars
from 325 · score 2.40
24.ealush / vest
Vest ✅ Declarative validations framework
- validation-library
- unit-testing
- form-validation
- react-validation-library
- validation
- vue-validation
- +7 more
+9 stars
from 2,660 · score 2.30
25.RicoSuter / NJsonSchema
JSON Schema reader, generator and validator for .NET
+9 stars
from 1,578 · score 2.30
26.asaskevich / govalidator
[Go] Package of validators and sanitizers for strings, numerics, slices and structs
- govalidator
- go
- validation
- validation-library
- sanitization
+6 stars
from 6,196 · score 1.95
+6 stars
from 4,136 · score 1.95
+5 stars
from 3,617 · score 1.79
29.ianstormtaylor / superstruct
A simple and composable way to validate data in JavaScript (and TypeScript).
- validation
- types
- interface
- structs
- schema
- javascript
- +1 more
+4 stars
from 7,122 · score 1.61
+4 stars
from 1,643 · score 1.61
31.marshmallow-code / webargs
A friendly library for parsing HTTP request arguments, with built-in support for popular web frameworks, including Flask, Django, Bottle, Tornado, Pyramid, webapp2, Falcon, and aiohttp.
+4 stars
from 1,406 · score 1.61
32.truemail-rb / truemail-go
🚀 Configurable Golang 📨 email validator/verifier. Verify email via Regex, DNS, SMTP and even more. Be sure that email address valid and exists.
- go
- golang
- go-package
- email-validation
- email-verification
- +14 more
+4 stars
from 133 · score 1.61
33.bids-standard / bids-validator
Validator for the Brain Imaging Data Structure
- bids
- data-standards
- neuroimaging-data
- validation
+4 stars
from 48 · score 1.61
34.thedevsaddam / govalidator
Validate Golang request data with simple rules. Highly inspired by Laravel's request validation.
- request
- go-request-validation
- validator
- validation
- go-validator
- govalidator
+3 stars
from 1,341 · score 1.39
35.gookit / validate
Translated⚔ Go package for data validation and filtering. support Map, Struct, Form data. A general-purpose Go library for data validation and filtering, simple to use, with most commonly used validators and filters built in, and support for custom validators, custom messages, and field translation.
- validation
- validator
- filter
- govalidator
- validate
- verification
+3 stars
from 1,162 · score 1.39
36.daddyz / phonelib
Ruby gem for phone validation and formatting using google libphonenumber library data
- ruby
- google-libphonenumber
- phone-validation
- phone-parse
- phone-number
- parsing
+3 stars
from 1,161 · score 1.39
37.wagslane / go-password-validator
Validate the Strength of a Password in Go
- entropy
- strength
- character
- golang-package
- security
- golang
- +2 more
+3 stars
from 589 · score 1.39
+3 stars
from 280 · score 1.39
39.didww / credit_card_validations
:credit_card: ruby gem for validating credit cards, generating credit card numbers, Luhn checks
- credit-card
- validation
- e-commerce
- rails
+3 stars
from 266 · score 1.39
+3 stars
from 83 · score 1.39
41.JunggiKim / java-refined
Refinement and functional value types for Java 8+
- functional-programming
- java
- java8
- maven-central
- non-empty
- refinement-types
- +1 more
+3 stars
from 5 · score 1.39
+2 stars
from 118 · score 1.10
43.sergiobayona / easy_talk
Ruby library for defining, generating and validating JSON Schema
- anthropic-api
- json-api
- json-schema
- openai-api
- function-calling
- openapi
- +2 more
+2 stars
from 96 · score 1.10
44.vertti / daffy
Lightweight DataFrame validation decorators for Pandas, Polars, Modin, and PyArrow. No custom types required.
- pandas
- dataframe
- validation
- polars
- pydantic
- data-quality
- +10 more
+2 stars
from 58 · score 1.10
+2 stars
from 32 · score 1.10
+2 stars
from 23 · score 1.10
+1 stars
from 9,054 · score 0.69
+1 stars
from 1,137 · score 0.69
49.Meteor-Community-Packages / meteor-collection2
A Meteor package that extends Mongo.Collection to provide support for specifying a schema and then validating against that schema when inserting and updating.
- hacktoberfest
- meteor
- schema
- mongodb
- meteorjs
- collection
- +3 more
+1 stars
from 1,015 · score 0.69
50.valit-stack / Valit
Valit is dead simple validation for .NET Core. No more if-statements all around your code. Write nice and clean fluent validators instead!
- validation
- fluent-api
- dotnet
- core
+1 stars
from 319 · score 0.69
51.Betree / burnex
📨🔥 Elixir burner email (temporary address) detector
- elixir
- temporary-email
- burner-email
+1 stars
from 80 · score 0.69
52.railsmechanic / bankster
An IBAN account numbers and BIC validation tool for Elixir.
- iban
- banking
- elixir
- validate-bics
+1 stars
from 34 · score 0.69
53.ohtf / nhs-number-py
Python package to provide utilities for NHS Numbers, including validity checks, normalisation, and generation.
- nhs
- fci
- python
- nhsnumber
+1 stars
from 13 · score 0.69