Yes, both Squarespace and Plausible Analytics offer a Free Trial.
Squarespace is designed for Medium Business and Small Business.
Plausible Analytics is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Squarespace Starts at $12/Month when Billed Yearly whereas for Plausible Analytics Starts at $5/Month when Billed Yearly.
Some top alternatives to Squarespace includes Unbounce, VWO Deploy, WordPress, SITE123, Wix, Webflow, Envato Sites, WebsiteBuilder, Bookmark Website Builder, Format, Website.com, SiteBuilder.com, Square Ecommerce, GoDaddy Website Builder and Web.com.
Some top alternatives to Plausible Analytics includes SimilarWeb Pro, Google Analytics, Matomo, Visitor Analytics, Fathom Analytics, umami, Microanalytics, phpAnalytics, Aqvil Analytics, IWT web analytics and Analyzati.