We are trying to collect all landing page companies in this list and as most of you know - speed is not an option for landing pages anymore - this is a key fact

We are trying to collect all landing page companies in this list and as most of you know - speed is not an option for landing pages anymore - this is a key factor in web site conversion. This gives a general idea of how these companies approach web site speed and how optimized they are. Any help in getting all these companies in this list would be appreciated :)