Yes (when using the standard Zip format).
Files encrypted with ZIP-compatible AES encryption can be decrypted with ZIP tools from various vendors, including WinZIP and PowerArchiver.
If you use Syncovery’s new Sz format, there is currently no other software that can unpack it. The way to unpack Sz files is to copy them from right to left with a Syncovery profile, or with the Restore Wizard. We will however release a free, standalone Sz Archiver as soon as possible.