
Codewars
Exercism
LeetCode
CodinGame
CodeCombat
HackerRank
Google's Python Class
CheckIO is a web site with a mission: To teach JavaScript and Python coding skills through a game-playing interface. It is designed to teach new skills or improve existing skills through completing challenges.

Formspree.io
Basin
Typeform
Jotform
FormSubmit
Wufoo
Formcarry
The complete headless backend API for your </form>
Which is more popular?
Based on our record, CheckIO should be more popular than Forminit. It has been mentioned 46 times since March 2021.
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | checkio.org | forminit.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from the United Kingdom · 1 - 9 employees · 2015 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of CheckIO yet.
Forminit (formerly Getform.io) is a powerful headless form backend that handles form submissions, file uploads, email notifications, webhooks, and integrations. Perfect for developers who want full control over their form UI.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Intro Video. How to get maximum from CheckiO
How to Collect Form Submissions From Static Websites Without Backend
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing CheckIO and Forminit.
Forminit's answer:
Forminit is a headless form backend API built for developers, agencies, and modern no-code/AI workflows that want full control over form design without maintaining backend infrastructure. Unlike traditional form builders, it works with any framework, static site, backend, mobile app, or AI agent, while handling submissions, validation, spam protection, file uploads, analytics, email notifications, webhooks, and storage in one platform. Its standout differentiators include typed server-side validation, a lightweight SDK with automatic UTM attribution tracking, public + protected API modes, built-in proxy helpers for frameworks like Next.js/Nuxt, and GDPR-friendly EU hosting. Formerly known as Getform.io, it has powered forms since 2015.
Forminit's answer:
Forminit wins on security, flexibility, and completeness. Unlike FormSubmit, your email is never exposed in HTML source. Unlike EmailJS, you get real submission storage, a dashboard, REST API, and webhooks. Unlike Netlify Forms, you are not locked to one host and get 25 MB uploads instead of 10 MB. Unlike Formspree, you get true API key authentication, protected mode, typed validation, and a 2 KB SDK with auto UTM capture.
Forminit's answer:
The primary audience of Forminit includes developers, freelancers, agencies, SaaS teams, startups, indie hackers, AI/vibe coders, and no-code builders who need reliable form handling without building backend infrastructure. It is particularly valuable for teams using frameworks such as React, Next.js, Nuxt, Astro, or static websites, as well as businesses running marketing, lead generation, contact, booking, onboarding, or file upload forms that require analytics, integrations, and secure submission storage.
Forminit's answer:
Forminit started in 2015 as Getform.io with a simple goal: remove the pain of building and maintaining form backends. Instead of forcing teams to create servers, databases, email systems, spam protection, dashboards, and integrations for every contact form, Forminit lets users build forms in any frontend while the platform manages everything after submission. In January 2026, Getform.io rebranded to Forminit, continuing the same service with a broader vision around developer workflows, APIs, automation, and AI-compatible integrations. The product is operated by UK-based UXPLUS LTD and stores data in EU infrastructure for GDPR compliance.
Forminit's answer:
Forminit is built around a headless API architecture with a REST API, a lightweight TypeScript/JavaScript SDK, server-side validation, webhooks, SMTP integrations, and cloud-based storage infrastructure. It provides native workflows and SDK support for ecosystems such as JavaScript/TypeScript, React, Next.js, Nuxt.js, Node.js, Python (Flask, Django, FastAPI), HTML/static sites, and modern frontend frameworks. Data is hosted on AWS infrastructure in Ireland (EU) to support GDPR compliance.
Forminit's answer:
Burger King Volkswagen Toyota Lidl Codecademy Sticker Mule University of Essex Section
Share your experience with using CheckIO and Forminit. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


CheckiO is a platform with coding games created for different levels of programmers, from beginners to advanced levels. Using fun and engaging methods, you can use coding games to solve challenges in TypeScript and...
CheckIO is available in English and Spanish. The platform was designed by a group of engineers and now has a number of customers all over the globe who may use it to improve their programming speed and abilities by...
Checkio is the most whimsical HackerRank alternative on this list. It’s also focused on two languages: Python and TypeScript. On this site you’ll be thrown into a gamer’s paradise that includes robot mollusks and...
We have no reviews of Forminit yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Have you heard of CheckIO (https://checkio.org/)? They have a gameified "Mario world" of coding challenges that are smaller and come with more explanation, tests to guide you through edge cases and provide hints. The challenges start... Source: almost 3 years ago
Cyber isn't gonna be a light switch, where you can flip it and be good. Don't be too hard on yourself. Start with some hands on stuff like https://tryhackme.com or checkio.org. You could look at certs like Security+ or CySA+ for some... Source: about 3 years ago
Much better to get your hands dirty than watching the videos. Try: https://checkio.org/. Source: over 3 years ago
Forminit (formerly Getform.io) is a headless form backend built around a block-based data model. Rather than dumping everything into flat key-value pairs, each field is a typed block (text, email, phone, URL, date, rating, file, country)... - Source: dev.to / 4 months ago
I built a form-to-email service like Formspree or Getform. My API accepts form submissions from the client, parses the request with formidable, and then sends the fields via email to the user. Any files submitted with the form are sent... Source: about 3 years ago
By following these guidelines, you can create an effective and user-friendly contact form that helps you connect with potential employers and others. There are several options for setting up a contact form, including using a service like... - Source: dev.to / over 3 years ago
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