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A powerful REST API for validating emails, IBANs, BIC/SWIFT codes, LEI, ISIN, credit cards, VAT numbers, phone numbers, and 70+ more validators. Free tier available.

CRI-O
Podman
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Apache Karaf
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Buildah
An industry-standard container runtime with an emphasis on simplicity, robustness and portability

Which is more popular?
Based on our record, containerd seems to be more popular. It has been mentioned 56 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | isvalid.dev | containerd.io |
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| Listed in |
In their own words, as submitted to SaaSHub.


IsValid is a validation API service for developers who need to quickly verify data formats without building their own validators. It offers 40+ endpoints covering financial identifiers (IBAN, BIC, ISIN, CUSIP), international standards (ISBN, ISSN), technology formats (UUID, JWT, QR codes),...
No description of containerd yet.
What each product offers, as listed by its team.


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


Overall verdict
Why this product is good
Recommended for
No analysis of containerd yet.
Walkthroughs and reviews on video.
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Deep Dive: containerd - Derek McGowan, Docker & Phil Estes, IBM Cloud
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing IsValid.dev and containerd.
IsValid.dev's answer
IsValid offers 70+ validators in a single API — covering financial identifiers (IBAN, BIC, ISIN, LEI), international standards (ISBN, ISSN), technology formats (UUID, JWT, QR codes), tax numbers (VAT, REGON, PESEL), credit cards, phone numbers, and more. No need to integrate multiple services for different data types.
IsValid.dev's answer
Most validation APIs focus on one category (email or phone). IsValid covers financial, regional, and technical formats all in one place with a consistent REST API. The free tier with 100 calls/day requires no credit card, and integration takes minutes.
IsValid.dev's answer
Developers and software teams building applications that handle user input, financial data, or international identifiers — particularly in fintech, e-commerce, and SaaS products.
IsValid.dev's answer
IsValid was built out of frustration with piecing together multiple validation libraries and services. The goal was a single, reliable API that handles the full range of data validation needs developers encounter in real-world applications.
IsValid.dev's answer
Next.js, Fastify, PostgreSQL, Docker
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External articles and on-site reviews we used to compare the two products.


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containerd is described as “an industry-standard container runtime with an emphasis on simplicity, robustness and portability.” An incubating project of the Cloud Native Computing Foundation, containerd is available...
Recommendations tracked on public social media and blogs since March 2021.


Tracking IsValid.dev since Apr 2026.
A Kubernetes cluster, also called K8S, is made up of machines (called nodes) that run containerised applications. It works alongside container engines like CRI-O or containerd to help you deploy and manage your apps more... - Source: dev.to / about 1 year ago
Containerd Official Site The runtime powering most cloud K8s clusters and your future mental breakdowns. - Source: dev.to / over 1 year ago
Also, Containers are the tool when you want to speed your process of updating your software and get modularity and portability when deploying your solutions. In this post you will learn how containerd together with nerdctl can help you... - Source: dev.to / over 1 year ago
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