Work · alternatives · 2026

24 alternatives to Nerdy's Duplicate Checker

A Notion duplicate id title checker

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Nerdy's Duplicate Checker launched in 2021; newer entries below may have overtaken it.

1. 1
   I built an app to create repeatable checklists to help with ADHD▲282

   CheckYourList is a simple repeatable checklist app that helps you get things done. Create checklists, add items, and check them off. Then uncheck the whole list to use it again.

   2021 · checkyourlist.app · its alternatives →

2. 2
   Duplicate Word Finder▲93

   Find duplicate words and eliminate them from your writings

   2023 · its alternatives →

3. 3
   Duplicate File Finder & Remover▲100

   A simple, freeware duplicate finder for Mac

   2017 · its alternatives →

4. 4
   startup name check▲259

   Save time, launch faster

   2018 · its alternatives →

5. 5
   Gemini 2.0▲301

   The intelligent duplicate file finder for your Mac

   2016 · its alternatives →

6. 6
   CheckLister▲79

   Simple, collaborative checklists. Not powered by AI

   2018 · its alternatives →

7. 7
   CheckYourList▲93

   Create repeatable checklists to help with ADHD & life

   2021 · its alternatives →

8. 8
   Clone Files Checker▲5

   Find duplicate files in PC and Cloud

   2018 · its alternatives →

9. 9NC
   Name Checker – Find project name collisions▲62

   Name Checker is a tool for when you want to create a new project and don’t want to check all the places (npm, apt, GitHub) for a name collision, you can just use this tool instead. I started working on this because I noticed on HN folks sometimes create a new company and SAAS and they didn’t notice that the name was already taken. Please let me know if y'all have any questions or comments!

   2023 · namechecker.vercel.app · its alternatives →

10. 10NC
    Name Checker – check your project name accross many sites▲30

    2023 · namechecker.leandrosf.com · its alternatives →

11. 11
    Merge Duplicate Symbols▲118

    Automatically find and act on duplicate symbols in Sketch

    2017 · its alternatives →

12. 12
    Web Roulette!▲120

    A better way to mindlessly check the internet

    2023 · its alternatives →

13. 13DI
    Duplicate Images Finder [with OpenCV]▲17

    2019 · github.com · its alternatives →

14. 14
    Duplicate Word Finder▲2

    Duplicate Word Finder » Online Tool

    2023 · duplicatewordfinder.com · its alternatives →

15. 15
    Dup Dup Go▲8

    Simple, Lightweight, Accurate Duplicate Finder For Mac

    2024 · apps.apple.com · its alternatives →

16. 16BA
    Built a desktop app to organize photos locally with duplicate detection▲40

    2025 · organizer.flipfocus.nl · its alternatives →

17. 17
    Duplicate Finder and Cleaner▲75

    Find & remove duplicate files

    2021 · its alternatives →

18. 18
    Duplicate Check for SuiteCRM▲3

    Detect and skip CRM duplicates

    2019 · its alternatives →

19. 19
    Is It Shipped Yet?▲50

    Validate Before You Create - See If Your Idea Already Exists

    2024 · isitshippedyet.com · its alternatives →

20. 20
    Duplicate Finder▲2

    Helps you save space consumed by unwanted duplicate photos

    2017 · its alternatives →

21. 21
    Duplicate Sweeper▲3

    Find and remove duplicate files from your computer

    Jun 2026 · wideanglesoftware.com · its alternatives →

22. 22
    iGrammar▲8

    Free online grammar and plagiarism checker

    2025 · igrammar.app · its alternatives →

23. 23
    DupCleaner.Com▲10

    Duplicate line remover online

    2025 · dupcleaner.com · its alternatives →

24. 24
    DuplicateDuster▲7

    Not your every day duplicate cleaner

    2025 · royalsoftworks.com · 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 →