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Dev tools · alternatives · 2026

24 alternatives to MIFieldValidator

Simplest way to use custom field validator

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. MIFieldValidator launched in 2019; newer entries below may have overtaken it.

  1. 1

    Idea and MVP validation software

    2020 · validatorapp.com · its alternatives →

  2. 2

    Single & multiple email validation tool online

    2022 · leadstal.com · its alternatives →

  3. 3
    Validator▲345

    Research and validate you micro saas ideas fast as Cheetah

    2024 · validator.help · its alternatives →

  4. 4

    Free JSON API that gives you a simple way to validate emails

    2015 · garridodiaz.com · its alternatives →

  5. 5

    Validates regex, typos, disposable, dns and smtp. Contribute to mfbx9da4/deep-email-validator development by creating an account on GitHub.

    2020 · github.com · its alternatives →

  6. 6

    first Python validation library to validate files using mime

    2022 · github.com · its alternatives →

  7. 7

    Find out if your startup's name is available on the web!

    2015 · its alternatives →

  8. 8
    volder▲63

    Schema builder and data validation for javascript

    2022 · github.com · its alternatives →

  9. 9
    Checker▲124

    Detect fake signups in under 200ms with an easy-to-use API

    2025 · its alternatives →

  10. 10

    Emails you can trust ,Keep your email lists error-free.

    2025 · vercel.com · its alternatives →

  11. 11

    A very fast library for validating UTF-8 using AVX2/SSE4 instructions - zwegner/faster-utf8-validator

    2019 · github.com · its alternatives →

  12. 12

    Privacy-first free email verifier | no storage | open source

    2025 · rapid-email-verifier.fly.dev · its alternatives →

  13. 13V1

    A simple, fast, extensible python library for data validation. New features: * union validator * dynamic dict validator * timedelta validator * enum validator * slug validator * fqdn validator * nested model class GitHub: https://github.com/guyskk/validr Document: https://github.com/guyskk/validr/wiki Usage: https://github.com/guyskk/validr/wiki/Scenario-&-Example

    2020 · its alternatives →

  14. 14

    Analyze & unlock the potential of your startup idea

    2023 · its alternatives →

  15. 15

    A real customer starts with a real email

    2017 · weblegit.com · its alternatives →

  16. 16

    Cross-platform CLI tool to validate configuration files across 18 formats. Syntax and schema validation with JSON Schema, XSD, and SchemaStore integration. Written in Go. - Boeing/config-file-validator

    2023 · github.com · its alternatives →

  17. 17
  18. 18

    Accurate, affordable and secure emails verification service

    Jan 2026 · emailsvalidator.in · its alternatives →

  19. 19

    The most customizable validation framework for JavaScript. - soc221b/form-validation.js

    2020 · github.com · its alternatives →

  20. 20

    Hi HN – Kristyna here. I built this free, online email validator and would love to share it with you. What it checks: - Syntax – Confirms correct proper email format. - Domain & DNS – Verifies the domain exists and resolves. - MX records – Verifies the domain can receive mail. - SMTP handshake (optional) – Checks the mail server accepts the recipient (no message is sent). - Disposable domains – Flags temporary inbox providers that can hurt deliverability lists. - Common typos – Catches mistakes and suggests fixes. How it works: Paste an email > click Validate > get a clear result with…

    Feb 2026 · sidemail.io · its alternatives →

  21. 21

    Got bored of using other ones, so made my own. Contribute to jackfranklin/jQuery-Form-Validator development by creating an account on GitHub.

    2012 · github.com · its alternatives →

  22. 22

    Free diagnostic web tool for your product images

    2022 · image-validator.com · its alternatives →

  23. 23

    Smarter Email Validation—Built for Modern Apps.

    Nov 2025 · smartemailcheck.com · its alternatives →

  24. 24

    It tells you if a Email is valid or not

    2025 · thirsty-melisse-hardcode-c2fce731.koyeb.app · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →