Z:gnu-www-ja-who-does-that-server-really-serve--f32184-Which online services are SaaS/en

Which online services are SaaSS? The clearest example is a translation service, which translates (say) English text into Spanish text. Translating a text for you is computing that is purely yours. You could do it by running a program on your own computer, if only you had the right program. (To be ethical, that program should be free.) The translation service substitutes for that program, so it is Service as a Software Substitute, or SaaSS. Since it denies you control over your computing, it does you wrong.