OpenRefine
OpenRefine is a free, open source power tool for working with messy data and improving it (by OpenRefine)
Jimfs
An in-memory file system for Java 7+ (by google)
| OpenRefine | Jimfs | |
|---|---|---|
| 48 | 5 | |
| 11,270 | 2,473 | |
| 1.1% | 0.5% | |
| 9.8 | 8.1 | |
| 4 days ago | 7 days ago | |
| Java | Java | |
| BSD 3-clause "New" or "Revised" License | Apache License 2.0 |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
OpenRefine
Posts with mentions or reviews of OpenRefine.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-04-17.
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Working on the Open Data Editor at the Open Knowledge Foundation
In April 2024, I was hired to polish the front-end of the Open Data Editor, an open source tool for non-technical data practitioners to explore and detect errors in tables. This app serves mostly as an easier-to-use alternative to Open Refine (with a lot less features, the tradeoff being a much flatter learning curve and more pleasing-to-the-eye interface).
- OpenRefine: For working with, cleaning, transforming messy data
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Classic Data science pipelines built with LLMs
Are you aware of this tool? https://openrefine.org
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Ask HN: What Underrated Open Source Project Deserves More Recognition?
"OpenRefine is a powerful free, open source tool for working with messy data: cleaning it; transforming it from one format into another; and extending it with web services and external data." https://openrefine.org/
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What you need to know about the future of Mozilla Hubs
Yes, let's hope! The strategy has worked out sometimes - Google shut down 'Google Refine' 10 years ago, it got turned into 'Open Refine', last update 2 months ago. https://github.com/OpenRefine/OpenRefine
It's a hugely useful tool if you're working with messy Excel-scale data, i.e., most biologists or social scientists.
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OpenRefine
It seems to be pure JS with jQuery: https://github.com/OpenRefine/OpenRefine/blob/master/main/we...
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java string equals returns false, even for identical strings
EDIT: trim() does not remove unicode 0x200b (unicode character for zero width space). https://github.com/OpenRefine/OpenRefine/issues/5105 is worth a read.
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UIUC MCS - CS 513 Review - Theory and Practice of Data Cleaning
There were six homework assignments. In order they were Regular Expressions, OpenRefine, Datalog, SQL, Provenance, and Python. None of these assignments took more than two to three hours to complete. They all were basic implementation and programming assignments with autograders.
Jimfs
Posts with mentions or reviews of Jimfs.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2024-02-22.
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How to write unit tests in C++ relying on non-code files?
Java has in-memory file systems that are essentially geared for this exact use case, eg jimfs[0]. You create your filesystem and any files you need when your tests are starting up, and your classes talk to them rather than the “real” ones. Maybe a similar project exists for the C++ ecosystem?
[0] https://github.com/google/jimfs
- An in-memory file system for Java
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Any library you would like to recommend to others as it helps you a lot? For me, mapstruct is one of them. Hopefully I would hear some other nice libraries I never try.
Recently been using JIMFS. Made my tests much faster and cleaner!
- An in memory file system
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Working and unit testing with temporary files in Java
I use Google's JIMFS "Just In Memory Filesystem" https://github.com/google/jimfs in my unit tests and have been very happy. No need to clean something up that disappears as soon as the test is over. Let's you create unix or windows style filesystems and I've used it to test a disk space healthcheck because you can set a limit to the size of the filesystem it creates. Very flexible and easy to use.
What are some alternatives?
When comparing OpenRefine and Jimfs you can also consider the following projects:
CQEngine - Ultra-fast SQL-like queries on Java collections
Modern Java - A Guide to Java 8 - Modern Java - A Guide to Java 8
visidata - A terminal spreadsheet multitool for discovering and arranging data
Lanterna - Java library for creating text-based GUIs
Smooks - An extensible Java framework for building event-driven applications that break up XML and non-XML data into chunks for data integration