If you are looking for a software that will bridge your delphi application and your interbase application that is freeware, look no further. I found this IB client program while researching since i cannot install delphi during deployment because it needs a serial key. Now, you don’t need to.
Here are the links. Please try only one. They all link to the same file. But just in case one of the links fail, at least you have other options to reach them.
http://www.indishare.me/r56pgf38bysj
http://filerack.net/file/36L9865
https://uploadocean.com/04pdw1dr0nxw
https://dailyuploads.net/h38drei09qth
https://www.megaupload.us/1NlG/20180218_Interbase_Client_IB.7z