
Evernote
OneNote
Todoist
Notion
Simplenote
Standard Notes
Joplin
Capture notes, share them with others, and access them from your computer, phone or tablet. Free with a Google account.

Abstract APIs
Numverify
GlobalEntity API
mailboxlayer API
IBAN.com
VAT-calc.net
Melissa Data Quality
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.

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | google.com | isvalid.dev |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from the United States | — |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Google Keep yet.
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),...
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
Google Keep is recommended for individuals who need a basic, user-friendly note-taking tool without excess features. It is particularly beneficial for users who are frequent users of other Google services, as it offers seamless integration. It's an ideal choice for students, professionals, or anyone needing to keep quick, organized notes and lists.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Google Keep, Simple and Clean Note-taking App 2018
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How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing Google Keep and IsValid.dev.
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
Share your experience with using Google Keep and IsValid.dev. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


No, Google is not discontinuing Google Keep. They ended support for the Google Keep Chrome app in early 2021 and encouraged users to migrate to the web version of Keep.
Google Keep has most of what you need in a note-taking app; to-do lists, audio notes, a web clipper, and images. In addition, you can archive notes to achieve a cleaner interface.
Google Keep Notes has long been a popular note-taking app for its simplicity and versatility. However, if you're looking for something different or need additional features, there are several free alternatives that...
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