What is "good" depends on what is most useful to you. For me, though, these are the key features for a good regex editor (besides the ability to test and create regular expressions, of course, which is a prerequisite to be called a "regex editor" :-) :
- Displays matches hierarchically with captured groups.
- Explains/analyzes an entered regex in plain English, showing a hierarchical tree.
- Translates your regex into code for a language of your choice.
RegexBuddy, as @Max mentioned, does all these but there is also a free alternative, Expresso that also does them very well. These two utilities are the only ones I have found with the crucial ability to explain a regex.
The features sound very attractive to me. But later I found the two are for Windows. I tried to install Expresso, the free one, via Wine, but met some trouble, about which I asked in another post.
- So I was wondering if in Ubuntu there are some applications comparable to RegexBuddy and Expresso?
- If it is required to install .NET Framework in order to install Expresso, is it still worth to install Expresso on Ubuntu?
Thanks and regards!