CSV Cleaner
Clean Spreadsheets
Csv Easy
CleanCSV AI
Modern CSV
CSV Buddy
CSV2All
Rons CSV Editor
IsValid.dev
Abstract APIs
Numverify
mailboxlayer API
IBAN.com
VAT-calc.net
Melissa Data Quality
MailValidation.io
Remove duplicates, trim whitespace, normalize text — no Excel required. Get an instant health report, fix duplicates and formatting issues, validate against Stripe, HubSpot, Salesforce, and Shopify, then download a file that's ready to import.
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), regional codes (PESEL, REGON, VAT), and more.
The service works on a freemium model — 100 free API calls per day, no credit card required. Users manage API keys through a dashboard with usage analytics showing daily call volume and per-endpoint breakdowns.
CSV Cleaner IsValid.devCSV Cleaner's answer
CSV Cleaner focuses on doing one job extremely well: cleaning and deduplicating CSV files fast.
Most alternatives are either:
complex spreadsheet software (Excel/Sheets), or
heavy data tools, or
require scripts or coding.
CSV Cleaner removes all that friction. You just upload → choose options → download.
No formulas, no setup, no accounts required for basic use.
It’s designed to feel like a tiny utility, not a platform.
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.
CSV Cleaner's answer
Three main reasons:
Speed You can clean a file in seconds without opening Excel or writing pandas scripts.
Simplicity No complicated workflows or dashboards — just the exact tools you need:
remove duplicates
normalize text
clean messy exports
It’s built for people who just want to fix a file quickly and move on with their day.
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.
CSV Cleaner's answer
CSV Cleaner is mainly for:
freelancers
operations/marketing teams
virtual assistants
founders
analysts
anyone exporting data from tools like Airtable, Stripe, CRMs, or spreadsheets
Basically: people who constantly deal with CSV exports but don’t want to write code.
If you’ve ever thought “why am I doing this in Excel again?” it’s probably for you.
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.
CSV Cleaner's answer
CSV Cleaner started as a personal frustration project.
I kept getting messy exports from different tools — duplicates, inconsistent formatting, extra whitespace — and I found myself repeatedly opening Excel or writing quick Python scripts just to clean them.
It felt like a problem that should already have a simple solution.
So I built a small web tool to handle the common cases in one click, and kept it intentionally lightweight and boring instead of turning it into a big “data platform.”
The goal was: upload → clean → download → done.
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.
CSV Cleaner's answer
CSV Cleaner uses a simple, low-ops stack:
Frontend/app built with Lovable
Backend/auth/storage with Supabase
Payments handled by Stripe
Processing happens server-side so files are handled securely and efficiently.
The stack was chosen to ship fast and stay easy to maintain rather than over-engineer.
IsValid.dev's answer:
Next.js, Fastify, PostgreSQL, Docker
CSV Cleaner's answer
CSV Cleaner is still early and primarily used by:
-indie founders
-small teams
-consultants
-ops/marketing folks
-spreadsheet-heavy roles
The tool is intentionally focused on individuals and small teams rather than enterprise customers.
It’s built for everyday workflows, not large corporate pipelines.
Clean Spreadsheets - Automatically clean customer data with a few clicks
Abstract APIs - Simple, powerful APIs for everyday dev tasks
Csv Easy - The ultimate CSV Editor. Import, tweak, fix, analyse and convert.
Numverify - Global phone number validation and lookup API
CleanCSV AI - Upload messy CSV or Excel files, detect duplicates, missing values, date issues, and export clean results online.
mailboxlayer API - Mailboxlayer is a free, simple and powerful JSON API offering instant email address validation & verification via syntax checks, typo and spelling checks, SMTP checks, free and disposable provider filtering, and much more.
