When comparing Nirsoft Utilities vs Rapid environment editor, the Slant community recommends Rapid environment editor for most people. In the question“What are the best power user tools for Windows?” Rapid environment editor is ranked 24th while Nirsoft Utilities is ranked 29th. The most important reason people chose Rapid environment editor is:
Displays wrong entries in red, e.g. paths that do no longer exist.
Specs
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Pros
Pro Tiny footprint
Pro Applications are portable
Pro Warnings
Displays wrong entries in red, e.g. paths that do no longer exist.
Pro Easy
Editing of Windows environment variables is easy, splits long lines.
Pro Resolve variables values, make easy a refactoring of PATH by extracting different elements in their own new variable
Pro Convert variables between verbatim and expandable
Windows supports referencing variables within variables, but only if they're marked in the registry as expandable, and conversion between the two types is exposed in the context menu for each variable.
Cons
Con Simple
Some may not consider it a "power" user tool.