The 4.0 version of Laplink PDASync is available as a free download on our website. The actual developer of the software is Laplink Software Inc.
From the developer:
In an increasingly mobile world, synchronizing between multiple handhelds and cell phones can be complicated. PDAsync provides you with simple, one-click synchronization between your mobile devices and popular applications on your computer. With PDAsync, you can synchronize your contacts, calendar, tasks, emails, notes, and more. You can synchronize multiple mobile devices to a single PC application and synchronize a single mobile device to multiple computers. You can also transfer data from one PC application to another and keep two applications in sync. PDAsync supports synchronization of Outlook, Lotus Notes, Lotus Organizer, and ACT! and can be used with Pocket PC/Windows Mobile and Palm-based devices, as well as some Smartphones.
You may want to check out more software, such as Laplink Switch & Sync, Laplink SafeErase or Laplink Sync, which might be similar to Laplink PDASync.