Analyzed
1 day
ago.
based on code collected
1 day
ago.
Project Summary
Ymacs is an open-source text editor for the Web similar in features and spirit to Emacs. It implements a lot of Emacs concepts such as kill ring, undo stack, multiple buffers, split windows, syntax highlighting, Emacs-like key bindings, programming modes (currently for JavaScript, XML, CSS, Lisp, and some basic support for editing Markdown text).
Currently works reliably in Firefox, but support for more browsers is planned.
In a Nutshell, Ymacs...
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took an estimated 3 years of effort (COCOMO model)
starting with its first commit in October, 2009
ending with its most recent commit about 1 month ago
Quick Reference
https://github.com/mishoo/ymacs
BSD 4-clause (University of California-Specific)
Permitted
Commercial Use
Modify
Distribute
Place Warranty
Forbidden
Hold Liable
Use Trademarks
Required
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
Security Confidence Index
Poor security track-record
Favorable security track-record
Vulnerability Exposure Index
Many reported vulnerabilities
Few reported vulnerabilities
Did You Know...
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data presented on the Open Hub is available through our API
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65% of companies leverage OSS to speed application development in 2016
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30 Day SummaryJan 20 2026 — Feb 19 2026
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12 Month SummaryFeb 19 2025 — Feb 19 2026
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