The collection includes plugins like "ForEachTiddler", "YourSearch", "IntelliTagger" and many more. [link]
No installation is required, you can use this tool directly from within your browser. [link]
It is especially designed for software developers that frequently have to look up words in source files (C, C++, Basic, Java, JavaScript, ...). But it is also very useful when searching in any other kind of text file. [link]