Their integrated drive+mail+docs+forms+... cloud system is not the first or maybe the best one out there, but it's very popular and I like it more than the competition for some of their key decisions. More obscure things are their accessible API anyone can use, some free computing power they provide for experiments, their analytics system for marketing, and their benchmarks of how fast the page loads being a standard. There's probably Scholar somewhere here but I haven't used it. Android gets installed everywhere even if it's unreasonable. Search is their major brand, but they have fingers in many buckets.