SaaS is where the town's paid takeovers happen. A dollar square in a busy district is worth two to somebody, and the software companies that live here are the ones most likely to notice when a competitor's icon sits next to theirs — evicting a competitor is, after all, the town's one paid sport.
The grid is every claimed square whose site is business or productivity software: invoicing, CRM, scheduling, forms, internal tools, the long tail of B2B. Sort by clicks to see which ones visitors actually leave the town for; sort by newest to watch the launches arrive.
Founders: if your product is here on a seeded square, it is yours for free — open it in town and claim it with an email. Square Town for SaaS founders covers what to do with it afterwards.