Dev tools · alternatives · 2026

24 alternatives to HelloCSV - A free FlatFile alternative

A modern, frontend only, open source, CSV importer

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Yobulk – Open-source CSV importer powered by GPT3▲233

   🔥 🔥 🔥Open Source & AI driven Data Onboarding Platform:Free flatfile.com alternative - yobulkdev/yobulkdev

   2023 · github.com · its alternatives →

2. 2FA
   Flatfile – a drop-in CSV / XLS importer for web apps▲54

   Flatfile is the AI data preparation and migration software that helps teams extract, prepare, map, transform, and validate messy data.

   2019 · flatfile.io · its alternatives →

3. 3
   TableFlow▲306

   Open-source CSV importer, alternative to Flatfile

   2023 · tableflow.com · its alternatives →

4. 4
   Modern CSV▲111

   A CSV editor/viewer

   2019 · its alternatives →

5. 5
   Csvbox.io – CSV import button for a web app, SaaS or API▲155

   Drop a production-ready CSV, Excel, and PDF importer into your SaaS in minutes. Handle up to 2 million rows per import, with column mapping, validation, webhooks, and clean data delivered to your API.

   2021 · csvbox.io · its alternatives →

6. 6
   We built a developer-first open-source CSV import platform▲25

   2023 · github.com · its alternatives →

7. 7
   CSVshare▲184

   Instantly share CSV data and make it searchable

   2017 · csvshare.com · its alternatives →

8. 8AO
   An open source, modern CSV importer tool in React▲15

   Machine Learning @ Airbnb

   2021 · czhu12.github.io · its alternatives →

9. 9
   uDSV.js – A faster CSV parser▲67

   Hey folks! I know CSV parsers (especially in JS) aren't terribly exciting and someone writes a "better" one every week. I'm in the middle of my parental leave, and this was a project that came out of me looking for the fastest/smallest CSV parser. It all started so innocently, and then turned into a benchmark-validation-athon; the library itself took ~2 weeks to write, but the performance comparisons took another ~4 weeks (on and off). The benchmarks were a huge effort, but I think they are the most thorough to date, both in breadth and in depth, so hopefully you find them useful:…

   2023 · github.com · its alternatives →

10. 10YA
    YoBulk AI – Open Source React SDK for data cleansing▲20

    Hey Everyone, We are excited to show YoBulk AI https://github.com/yobulkdev/yobulkdev an open source alternative react SDK for data cleansing (CSVs). CSV files are the most common data format for storing and exchanging data. They are often used in SaaS (Software as a Service) tools for data management, such as CRM (Customer Relationship Management) systems, marketing automation platforms, and data analytics software. Data cleaning is a crucial process in data management, especially when dealing with CSV files. Here are some of the problems that can arise during data…

    2023 · yobulk.dev · its alternatives →

11. 11
    CSV GB+ by Data.olllo – Open and Process CSVs Locally▲51

    I built CSV GB+ by Data.olllo, a local data tool that lets you open, clean, and export gigabyte-sized CSVs (even billions of rows) without writing code. Most spreadsheet apps choke on big files. Coding in pandas or Polars works—but not everyone wants to write scripts just to filter or merge CSVs. CSV GB+ gives you a fast, point-and-click interface built on dual backends (memory-optimized or disk-backed) so you can process huge datasets offline. Key Features: Handles massive CSVs with ease — merge, split, dedup, filter, batch export Smart engine switch: disk-based "V Core" or RAM-based "P…

    2025 · apps.microsoft.com · its alternatives →

12. 12
    Flatirons Fuse▲72

    Intelligent CSV import tool for websites

    2023 · flatirons.com · its alternatives →

13. 13
    React spreadsheet import▲2

    CSV/XLSX importer. An open source alternative to Flatfile.

    2022 · github.com · its alternatives →

14. 14CQ
    CSVFiddle – Query CSV files with DuckDB in the browser▲64

    Import CSVs, write SQL, and instantly share it with anyone. Runs 100% in-browser, so you're in control of your data.

    2022 · csvfiddle.io · its alternatives →

15. 15
    YoBulk▲64

    GPT powered 1-click CSV importer for your SaaS (OpenSource)

    2023 · its alternatives →

16. 16ES
    EasyCSV, stop generating CSVs for non-tech colleagues (an MVP)▲10

    2013 · easycsv.com · its alternatives →

17. 17
    Jeeves▲69

    Your butler for instant insights, cya csvs

    2022 · therocketbrew.com · its alternatives →

18. 18CI
    CSVshare – Instantly share data with anyone and make it searchable▲50

    2017 · csvshare.com · its alternatives →

19. 19DT
    Dropbase – Turn your CSV files into live databases in seconds▲26

    2020 · dropbase.castodia.com · its alternatives →

20. 20
    CSV to JSON Converter▲3

    16 free browser-based CSV tools — no upload, no signup

    Jun 2026 · csvtojsonconverter.com · its alternatives →

21. 21
    CSV Cleaner▲3

    Hi HN, I built a small utility to clean up messy CSV exports without opening Excel or writing pandas scripts. Upload a CSV → preview → choose columns to dedupe → normalize/trim → download the cleaned file. Free tier, no signup required for basic use. Stack: -Lovable for the app -Supabase (auth, Postgres, storage, edge functions) -Stripe for subscriptions/day passes Processing runs server-side; I kept the architecture intentionally simple and low-ops. Would love feedback on UX, edge cases, or features you’d want. Website: https://csv-cleaner.com/

    Feb 2026 · csv-cleaner.com · its alternatives →

22. 22
    EasyCSV▲4

    CSV & Google Sheet import for any App, Public API, Zapier.

    2020 · easycsv.io · its alternatives →

23. 23
    Flatfile.io▲3

    Never build a CSV importer again

    2019 · flatfile.com · its alternatives →

24. 24
    CSV Rest▲6

    Easily create RESTful API from CSV files

    2021 · its alternatives →

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 →