Downloading APILE Plus 5.0.11 from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. This program is a product of Ensoft, Inc. APILE Plus lies within Business Tools, more precisely Project Management.
From the developer:
APILE Plus is used to compute the axial capacity, as a function of depth, of a driven pile in clay, sand, or mixed-soil profiles. The main computational methods used by APILE are those established by the American Petroleum Institute (API) in their manual on recommended practice, API-RP2A.
A new option, added in this edition, is the ability to perform computations for tensile (uplift) loads.
You may want to check out more software, such as Agenda One, AllNetic Working Time Tracker or Muster, which might be related to APILE Plus.