App Review: Archive Manager 21
While the ability to ZIP and UNZIP files directly on your webOS device has existed in homebrew via command line (or embedded in apps like Save/Restore from WebOS Internals) for a long time, the release of Archive Manager by pcworldSoftware finally enables the general webOS user to both compress and extract archived files. Currently on sale for $1.99 for the first week of its release and available for any device running webOS 2.1 or higher (including the TouchPad), Archive Manager can extract almost all archive formats (e.g. ZIP, RAR, 7z, tar, gzip, bzip2, iso and many more) or compress files and folders (to a ZIP, 7z, tar, gzip or bzip2). In addition, it is also has a full File Manager built into the app. While the file manager aspect of the app isn't as fully featured as Internalz or Gemini File Manager, it still gives you quite of lot of features such as the ability to copy, move, rename, email, delete, open or create files and folders. Those features alone would make this a worthwhile investment (if Internalz Pro weren't already available for free in Preware).
As for the archiving nature of the app, it's simple to use and gets the job done. To compress/archive files or folders, you just select them using checkboxes in the file listing, tap an icon on the bottom of the screen to access the "multi-select menu" and then select "compress files". You then have an option to name the archive, select the archive file type, set a password, and even specify a size limit to split the archive into multiple files. To extract a compressed file, you just tap it, select "extract" from the pop-up menu and optionally specify the location to extract the files. If you have an archive that is split among many files, just extract the first one and the app will automatically extract them all.
Since Archive Manager is a hybrid Mojo/PDK app, it will run on both your webOS phone (as long as it's running webOS 2.1 or higher) and TouchPad. The only difference besides screen size is that the TouchPad version adds in a back button to account for the lack of a gesture area / ability to back-swipe on a phone. It may not be the prettiest app, but it works really well for what it does, although some formatting preferences such as the ability to make the font smaller or allow for text wrapping on phones would be a welcome addition. As mentioned above, even the file manager functionality is a nice feature, including things like multi-file move and delete that even Internalz or Internalz Pro doesn’t have. The developer has stated that he plans on adding file associations for the app, so you can open archives directly from an email or the web browser, and is also exploring options to add a homebrew service to "unlock" the rest of your phone, not just the USB drive. In the meantime, though, you would either need to download the file to your device and then open in Archive Manager, or use Internalz Pro to copy files to the USB partition of your device before archiving them.