HsSmsDll 1.1 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.
We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. The program is included in System Utilities. The following version: 1.1 is the most frequently downloaded one by the program users. This software was originally designed by Hillstone Software.
From the developer:
HS SMS DLL is a Windows Dynamic Link Library enabling applications to send, receive, read and delete SMS messages via a GSM modem attached to PC COM port, supporting selected features of standards GSM 07.05 (ETS 300 585) and GSM 03.40. HS SMS DLL includes integrated encryption which can be optionally used to encrypt and decrypt SMS text using AES, DES, 3DES, ARC4, CAST128, Blowfish or Twofish.
You may want to check out more software, such as iPSP Movie Loader or DockWare Pro for Pocket PCs, which might be related to HsSmsDll.