The platform is called the podium. The stand in front of the speaker is called the lectern.
rostra
Platform
Lectern.
rostrum
Commonly known as a soapbox or dais.
A speakers platform will be called different names depending on the scenario. Common names include pulpit, stage, dais and so many more.
Another name for a walled garden is a closed platform.
Another name for a pontoon is a "float" or "floating platform." In some contexts, especially in boating, it can also be referred to as a "barge" when it serves to support structures or vessels on the water.
Deas, also normally known as dais, is a raised platform, as in lecture hall, for honoured guests or speakers. Deas is a platform for several people to stand.
The program compiled on one platform may not run in another platform.
Reviews on sound speakers are available and can be read on most forums where this product is sold. Amazon and Saturn are examples of sites that provide a platform of such forums.
An execution platform is also known as a Gallows.