Program for creating language syntax/grammar "railroad" diagrams?

Question

I'm looking for the program that JSON, SQLite and other projects are using to create the diagrams used for their language syntax, if there is a particular program. All of the diagrams have a similar style, with partially curved connections or arrows indicating flow.

There are some differences, making me wonder if it's a single program or just generic graphing tools used for a particular style.

JSON Digit SQLite Select Statement

The top one is from json.org and was drawn by Douglas Crockford using Visio. See http://stackoverflow.com/q/796824/477035 as in Chris W. Rea's answer. — RedGrittyBrick, Dec 27 '11 at 22:25

score 13 · Accepted Answer · edited May 23 '17 at 12:41

As you can see by my edits to your question, the kind of syntax diagram you're referring to is also known as a railroad diagram. Wikipedia mentions a few tools under the "External Links" section, including:

See also these related Stack Exchange questions:

Super User: Software to draw/edit the Syntax of SQL statements
Stack Overflow: Tool for generating railroad diagram used on json.org
Stack Overflow: What is a good tool for creating railroad diagrams?
Stack Overflow: What's the name for this type of flowchart?
Stack Overflow: Software for creating “Language Diagrams” structures
Stack Overflow: BNF notation to SVG

score 0 · Answer 2 · answered Jan 22 '19 at 15:16

0

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answered Jan 22 '19 at 15:16

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Please read [How do I recommend software](https://meta.superuser.com/questions/5329/how-do-i-recommend-software-in-my-answers/5330#5330) for some tips as to how you should go about recommending software. You should provide at least a link, some additional information about the software itself, and how it can be used to solve the problem in the question. – DavidPostill Jan 22 '19 at 15:43

Program for creating language syntax/grammar "railroad" diagrams?

2 Answers2