Can we remove Osclass Text from whole site so my competitor can not see my site that made by osclass. ? Is it Possible ?
Please tell me anyone.

Yes it can, but is useless

If you need info about this, you search on osclass forum

@ferry

Why its useless. Please tell me the reason.

I do npt think it is worth of your time, you can invest it better.

Yes its possible,  i have already did;
But after removing Osclass, you can't update, yours cms, plugins, themes,

Always you have to maintain the typos, & error's,   

Better stick with osclass, don't change the name, either you are not a pro Developer,  or having a team of Developer,

That's a big challenge,