1.pydantic / pydantic
Data validation using Python type hints
- validation
- parsing
- json-schema
- pydantic
- python
- hints
- +5 more
+391 stars
from 28,909 · score 5.97
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
36 repositories by Attention Score · Oct 6, 2026 – Nov 4, 2026 (UTC)
2.colinhacks / zod
TypeScript-first schema validation with static type inference
- typescript
- schema-validation
- type-inference
- runtime-validation
- static-types
+241 stars
from 44,021 · score 5.49
3.unionai-oss / pandera
A light-weight, flexible, and expressive statistical data testing library
+39 stars
from 4,471 · score 3.69
4.open-circle / valibot
The modular and type safe schema library for validating structural data 🤖
- bundle-size
- modular
- parsing
- schema
- type-safe
- typescript
- +8 more
+33 stars
from 9,019 · score 3.53
5.go-playground / validator
:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
- validation
- translation
- error-handling
+32 stars
from 20,183 · score 3.50
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
+28 stars
from 14,842 · score 3.37
7.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]
+21 stars
from 1,948 · score 3.09
8.AfterShip / email-verifier
:white_check_mark: A Go library for email verification without sending any emails.
+20 stars
from 1,632 · score 3.04
9.typestack / class-validator
Decorator-based property validation for classes.
- validation
- validator
- decorators
- typescript
+19 stars
from 11,834 · score 3.00
10.validatorjs / validator.js
String validation
- validation
- sanitization
- javascript
- node
- input
- validator
- +4 more
+10 stars
from 23,732 · score 2.40
11.FGRibreau / mailchecker
:mailbox: Cross-language temporary (disposable/throwaway) email detection library. Covers 55 734+ fake email providers.
- email-validation
- email-verification
+10 stars
from 1,908 · score 2.40
12.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
+9 stars
from 4,146 · score 2.30
13.python-jsonschema / jsonschema
An implementation of the JSON Schema specification for Python
- json-schema
- json
- validation
- schema
- jsonschema
+8 stars
from 4,985 · score 2.20
+7 stars
from 23,649 · score 2.08
15.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
+7 stars
from 5,388 · score 2.08
16.marshmallow-code / marshmallow
A lightweight library for converting complex objects to and from simple Python datatypes.
- serialization
- deserialization
- validation
- python
- marshalling
- serde
- +1 more
+6 stars
from 7,238 · score 1.95
17.Respect / Validation
The most awesome validation engine ever created for PHP
- php
- validation
- validation-engine
- fluent-interface
- validator
- standalone
- +1 more
+6 stars
from 6,029 · score 1.95
+4 stars
from 11,632 · score 1.61
19.Propaganistas / Laravel-Phone
Phone number functionality for Laravel
- laravel
- libphonenumber
- validation
- phone
+4 stars
from 3,036 · score 1.61
20.ealush / vest
Vest ✅ Declarative validations framework
- validation-library
- unit-testing
- form-validation
- react-validation-library
- validation
- vue-validation
- +7 more
+3 stars
from 2,666 · score 1.39
21.RicoSuter / NJsonSchema
JSON Schema reader, generator and validator for .NET
+3 stars
from 1,584 · score 1.39
22.CuyZ / Valinor
Dependency free PHP library that helps to map any input into a strongly-typed structure.
+3 stars
from 1,530 · score 1.39
+3 stars
from 332 · score 1.39
+2 stars
from 4,139 · score 1.10
25.sindresorhus / is
Type check values
- type-detection
- type-check
- is
- assertions
- typescript
- node-module
- +1 more
+2 stars
from 1,797 · score 1.10
26.Oudwins / zog
Go with Zod inspired simple schema validation
- error-handling
- golang
- runtime-validation
- schema-validation
- templ
- translation
- +1 more
+2 stars
from 1,218 · score 1.10
27.ianstormtaylor / superstruct
A simple and composable way to validate data in JavaScript (and TypeScript).
- validation
- types
- interface
- structs
- schema
- javascript
- +1 more
+1 stars
from 7,126 · score 0.69
28.asaskevich / govalidator
[Go] Package of validators and sanitizers for strings, numerics, slices and structs
- govalidator
- go
- validation
- validation-library
- sanitization
+1 stars
from 6,200 · score 0.69
+1 stars
from 1,645 · score 0.69
30.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
+1 stars
from 1,343 · score 0.69
31.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
32.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
+1 stars
from 282 · score 0.69
34.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
+1 stars
from 136 · score 0.69
+1 stars
from 85 · score 0.69
36.miguelpragier / handy
GO Golang Utilities and helpers like validators and string formatters
- golang
- golang-package
- helper-functions
- simple
- go
- string-manipulation
- +4 more
+1 stars
from 83 · score 0.69