I don't know what is the good forum for that, but...
Program is here:
http://dl.getdropbox.com/u/210143/tslinker.rar
In actual version the transparency is replaced by the color (I working on it, but actually all tries for linking tilesets without replace Alpha for color hangs the program). Color must be selected BEFORE load any tileset using button "Select the background COLOR (...)". By default it is aqua (Delphi constant clAqua). It should be good for many tilesets, but if in tileset will be aqua elements, they'll disappear. It is one more bad thing with save. Program save linked tileset in BMP format, because if we trying to save PNG we can get corrupted file. You must convert it in a graphic program (The Gimp will be good choice. You must use it anyway, if you would like to get Alpha PNG ). It's all. Of course I'll try to remove all bad things, what I wrote in this little text. However, this program still save your time in linking Tilesets.
Program is here:
http://dl.getdropbox.com/u/210143/tslinker.rar
In actual version the transparency is replaced by the color (I working on it, but actually all tries for linking tilesets without replace Alpha for color hangs the program). Color must be selected BEFORE load any tileset using button "Select the background COLOR (...)". By default it is aqua (Delphi constant clAqua). It should be good for many tilesets, but if in tileset will be aqua elements, they'll disappear. It is one more bad thing with save. Program save linked tileset in BMP format, because if we trying to save PNG we can get corrupted file. You must convert it in a graphic program (The Gimp will be good choice. You must use it anyway, if you would like to get Alpha PNG ). It's all. Of course I'll try to remove all bad things, what I wrote in this little text. However, this program still save your time in linking Tilesets.