1.pydantic / pydantic
Data validation using Python type hints
- validation
- parsing
- json-schema
- pydantic
- python
- hints
- +5 more
+384 stars
from 28,903 · score 5.95
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
16 repositories by Attention Score · Oct 5, 2026 – Nov 3, 2026 (UTC)
2.colinhacks / zod
TypeScript-first schema validation with static type inference
- typescript
- schema-validation
- type-inference
- runtime-validation
- static-types
+242 stars
from 44,012 · score 5.49
3.google / libphonenumber
Google's common Java, C++ and JavaScript library for parsing, formatting, and validating international phone numbers.
+50 stars
from 18,290 · score 3.93
4.go-playground / validator
:100:Go Struct and Field validation, including Cross Field, Cross Struct, Map, Slice and Array diving
- validation
- translation
- error-handling
+38 stars
from 20,177 · score 3.66
5.open-circle / valibot
The modular and type safe schema library for validating structural data 🤖
- bundle-size
- modular
- parsing
- schema
- type-safe
- typescript
- +8 more
+34 stars
from 9,016 · score 3.56
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 14,840 · score 3.37
7.typestack / class-validator
Decorator-based property validation for classes.
- validation
- validator
- decorators
- typescript
+19 stars
from 11,834 · score 3.00
8.FluentValidation / FluentValidation
A popular .NET validation library for building strongly-typed validation rules.
+17 stars
from 9,751 · score 2.89
9.validatorjs / validator.js
String validation
- validation
- sanitization
- javascript
- node
- input
- validator
- +4 more
+12 stars
from 23,731 · score 2.56
+7 stars
from 23,649 · score 2.08
+6 stars
from 11,632 · score 1.95
12.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
13.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
+5 stars
from 21,159 · score 1.79
15.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
16.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