NaturalIntelligence / fast-xml-parser

Validate XML, Parse XML and Build XML rapidly without C/C++ based libraries and no callback.

APIDevTools / swagger-parser

Swagger 2.0 and OpenAPI 3.0 parser/validator

IBM / openapi-validator

Configurable and extensible validator/linter for OpenAPI documents

confuser / graphql-constraint-directive

Validate GraphQL fields

Nonco-Organization / multicoin-address-validator

Useful library for validation of Bitcoin, Litecoin, Ethereum and other cryptocoin addresses

hassenbrahim / ValidatorMempool

Automates smart blockchain validation through real-time-processing and auto-scaling, ensuring robust validator service.

lewispour / pulse-proxy-checker

⚡ Fast local proxy checker for HTTP/HTTPS/SOCKS4/SOCKS5 — live results with country, quality & risk, offline GeoIP, saved pools. Free & open-source (Tauri + Rust). macOS & Windows.