Dataset comparison tool

Find the intersection of two lists

Find the difference between two lists

Compare two lists

Find data overlap

Compare more than 4 lists

Online Venn diagram for up to four lists

Online Jaccard index

Compare data sets

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Multiple List Comparator

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Number of lists:
Clear All
Load example lists
Case-sensitive comparison
Interpret commas as item separators
Pairwise intersections:
Color by:

Input Lists

Tabular input
Delimiter: First row contains column headers
Read Data

Venn Diagram

Save as PNG
Save as SVG

Item Listing (Click on numbers in the graphics)

Copy to Clipboard
Save to File

Explanation of the Symbols

AB - subtraction of list B from list A

AB - intersection of lists A and B

AB - union of lists A and B

Shared Items

Save to File
Delimiter: Quoted values
ItemOccurrencesPresent in

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DISCLAIMER: This free software comes without any warranty. The author of the software bears no responsibility for any loss or damage that may arise from its use for any purpose.


Before any analysis, the required number of empty list forms has to be prepared. This can be done by filling the number of lists to be prepared in the related input field and clicking the "Set" button (all existing lists will be discarded). To add a list form to the existing set of forms, click the large plus button located just after the last list form.



The program expects an input in the form of simple item lists i.e. with one item per line. If the source data are to be loaded from files, the files should be plain text files (no formatting) containing one item per each line or comma-separated items.



The program can import a tabular data set wherein the list items are organized column-wise and separated with delimiters in each row. The delimeter can be one of the characters tab, comma or semicolon and has to be properly chosen before reading the data into the app with the "Read Data" button. If the source data are to be loaded from a file, the file should be a plain text file containing delimiter-separated values. After clicking the "Read Data" button, the values should get properly distributed into the individual input lists. If not, check the delimiter choice and appearance of the data. The problem may also be caused by a presence of additional text lines preceding the data. Such lines have to be removed manually.