Is Backblaze a Google Drive replacement? I didn't think they had a client/etc. Isn't Google Drive more akin to Dropbox/etc? Which I know Dropbox has potential

Is Backblaze a Google Drive replacement? I didn't think they had a client/etc. Isn't Google Drive more akin to Dropbox/etc? Which I know Dropbox has potential privacy concerns, but I don't think Backblaze fits these.. to my understanding at least.