If using the JavaScript regular expression engine is acceptable, there's a nice one written by Erik Arvidsson. It doesn't have the "Replace" features that Komodo IDE's Rx Toolkit has, but it's helpful for testing matches.
Disclosure: Sridhar and I work for ActiveState, so we tend to push Komodo IDE. If $295 is a barrier for you, just tell our sales folks that you're a friend of Sridhar from stackoverflow and they might be able to swing a deal for you. We'll take it out of his pay.
Update: More shilling if that's OK. There's a sale on till the end of October. $50 off!
我喜欢这个 Adobe Air 工具。非常适合在实际使用之前测试表达式。这是他提供的在线工具的桌面应用程序版本 - 全部免费。
I love this Adobe Air tool. Great for testing out expressions before trying them in the wild. It is a desktop app version of the online tool that he provides - all free.
Damian Conway made a free regular expression debugger module that allows you to visualize a regular expression as it backtracks, fails, and/or matches: Regexp::Debugger.
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如果可以接受使用 JavaScript 正则表达式引擎，那么Erik Arvidsson 编写的一个不错的引擎。它没有 Komodo IDE 的 Rx Toolkit 所具有的“替换”功能，但它对于测试匹配很有帮助。
他写了与Komodo Edit一起使用 - 我猜他也不想花钱购买 IDE。 ;)
披露：Sridhar 和我为 ActiveState 工作，因此我们倾向于推送 Komodo IDE。如果 295 美元对您来说是一个障碍，只需告诉我们的销售人员您是来自 stackoverflow 的 Sridhar 的朋友，他们也许可以为您达成一笔交易。我们将从他的工资中扣除。
更新：如果可以的话，可以加更多先令。促销活动持续到十月底。立减 50 美元！
If using the JavaScript regular expression engine is acceptable, there's a nice one written by Erik Arvidsson. It doesn't have the "Replace" features that Komodo IDE's Rx Toolkit has, but it's helpful for testing matches.
He wrote for use with Komodo Edit - I guess he didn't want to shell out for the IDE either. ;)
Disclosure: Sridhar and I work for ActiveState, so we tend to push Komodo IDE. If $295 is a barrier for you, just tell our sales folks that you're a friend of Sridhar from stackoverflow and they might be able to swing a deal for you. We'll take it out of his pay.
Update: More shilling if that's OK. There's a sale on till the end of October. $50 off!
我偶尔使用正则表达式实验室
I have occasionally used the Regular Expression Labratory
我喜欢这个 Adobe Air 工具。非常适合在实际使用之前测试表达式。这是他提供的在线工具的桌面应用程序版本 - 全部免费。
I love this Adobe Air tool. Great for testing out expressions before trying them in the wild. It is a desktop app version of the online tool that he provides - all free.
我个人认为这个网站很震撼！它有匹配和替换。尝试一下并告诉我：
http://gskinner.com/RegExr/
I personally think this site rocks! It has match and replace. Try it and let me know:
http://gskinner.com/RegExr/
尝试一下开源应用程序 Kodos。
但我建议你使用 Komodo（你想要折扣吗？）——它比 Rx 工具包包含更多的功能。
Give the open-source app Kodos a try.
But I suggest that you use Komodo (do you want a discount?) - it contains much more features than Rx toolkit.
Damian Conway 制作了一个免费的正则表达式调试器模块，允许您在回溯、失败和/或匹配时可视化正则表达式：Regexp::Debugger。
实际操作视频：Damian Conway 在 YAPC::NA 2012 上关于 Regexp::Debugger 的演讲
Damian Conway made a free regular expression debugger module that allows you to visualize a regular expression as it backtracks, fails, and/or matches: Regexp::Debugger.
Video of it in action: Damian Conway on Regexp::Debugger at YAPC::NA 2012