: WinRAR is "shareware." While the trial technically lasts 40 days, the developers are famously lenient. If you use it for business, consider supporting the official project at rarlab.com.
: Note that portable versions usually do not add "Extract Here" options to your Windows right-click menu unless you manually enable them in settings. Step 3: Key Features in WinRAR 6.20 WinRAR 6.20 RePack / Portable
Because RePacks and Portables are not distributed by (the official developers), you must exercise caution: : WinRAR is "shareware