Mapsoft Maskit 2.0 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This program was originally created by Mapsoft Computer Services Limited. The most popular version among Mapsoft Maskit users is 2.0. We recommend checking the downloaded files with any free antivirus. The software lies within Office Tools, more precisely Document management.
From the developer:
MaskIt allows you to mask areas (stop PDF page elements from drawing within a rectangular area) of pages of PDF documents so that anything that information or content in that area will no longer be visible and will not print. It is the perfect tool for hiding secure content in automated workflows.
You may want to check out more software, such as PDF Converter Professional, GnuWin32: Sed or Gallery Constructor, which might be related to Mapsoft Maskit.