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Top 16 Python Diff Projects
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TextDistance
📐 Compute distance between sequences. 30+ algorithms, pure python implementation, common interface, optional external libs usage.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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graphtage
A semantic diff utility and library for tree-like files such as JSON, JSON5, XML, HTML, YAML, and CSV.
Project mention: Graphtage – Semantic Diff for JSON, XML, HTML, YAML, and CSV | news.ycombinator.com | 2024-10-20 -
Project mention: Ubuntu Hoping to Remove Qt 5 Before Ubuntu 26.04 LTS | news.ycombinator.com | 2024-11-01
Qt5 to Qt6 is nothing like Python2 to Python3.
The lessons from (Qt3 to Qt4 and) Qt4 to Qt5 have been learned and moving a large project from Qt5 to Qt6 is not that hard comparatively. There are a few minor deprecated APIs to handle and it's relatively easy over all.
I even have a stable project that is compatible with Qt5 and Qt6 [1] all in a single code base (particularly thanks to the effort of the qtpy[2] library). It's not that hard, and my opinion includes C++ in that assessment.
[1] https://github.com/git-cola/git-cola/
[2] https://github.com/spyder-ide/qtpy
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deepdiff
DeepDiff: Deep Difference and search of any Python object/data. DeepHash: Hash of any object based on its contents. Delta: Use deltas to reconstruct objects by adding deltas together. (by seperman)
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Sevalla
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moulti
Moulti is a CLI-driven Terminal User Interface (TUI) displaying arbitrary outputs inside visual, collapsible blocks called steps.
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mdiff
Package for finding difference between two input sequences with ability to detect sequence elements displacements.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Python Diff discussion
Python Diff related posts
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Ubuntu Hoping to Remove Qt 5 Before Ubuntu 26.04 LTS
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Graphtage – Semantic Diff for JSON, XML, HTML, YAML, and CSV
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FLaNK AI Weekly 25 March 2025
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Pijul: Version-Control Post-Git • Goto 2023
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Ideas for approaching pattern matching/distance problem
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What is the best way to compare two file geodatabases and determine if they are different?
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As someone who has done something similar in the past, I don't feel bad about laughing. 🤣 (Also this guy got the advice he needed.)
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A note from our sponsor - SaaSHub
www.saashub.com | 1 Sep 2025
Index
What are some of the best open-source Diff projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | TextDistance | 3,491 |
| 2 | graphtage | 2,418 |
| 3 | git-cola | 2,383 |
| 4 | deepdiff | 2,363 |
| 5 | dunk | 831 |
| 6 | jsondiff | 734 |
| 7 | reladiff | 473 |
| 8 | pytest-clarity | 450 |
| 9 | csv-diff | 320 |
| 10 | geodiff | 169 |
| 11 | moulti | 151 |
| 12 | mdiff | 32 |
| 13 | DMFO | 17 |
| 14 | diff-logs | 12 |
| 15 | pandas_diff | 11 |
| 16 | vimtabdiff | 5 |
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