Best Java CMS Software for Startups

Contentstack is the pioneer of the Agentic Experience Platform (AXP), a unified system that brings together structured content, real-time customer data, and AI-driven automation. By connecting its composable Content Cloud, Data Cloud, and Agent OS, Contentstack helps enterprises reduce operational debt, automate digital workflows, and deliver personalized, adaptive experiences at scale. Unlike legacy monoliths or fragmented headless tools, Contentstack's agentic ecosystem turns real-time customer intent into immediate action, making it a powerful foundation for modern composable commerce.

Bloomreach personalizes the e-commerce experience. Its data engine unifies real-time customer and product data so businesses understand what customers really want. By connecting that understanding to every channel, the e-commerce experience becomes limitless — reflecting a changing customer as they shop. Amplified by the speed and scale of Loomi, Bloomreach's AI for e-commerce, this creates endless new paths to purchase. Bloomreach products include: Engagement, a marketing automation platform; Discovery, an e-commerce search solution; Content, a headless CMS; and Clarity, AI-powered conversational shopping. The company has multiple AI patents and serves global brands that include Williams-Sonoma, Bosch, Puma, and Marks & Spencer.

Expressroom is a Java-based, XML-powered content management system developed by Industrial Medium, Inc. We at Lattice Group use it to provide our clients with the control, flexibility, and power they need to effectively produce, manage, and administer large or complex, enterprise-level websites. It provides convenient, structured controls for check-in/check-out versioning for every aspect of website development including the content, graphical presentation and code. This makes the content development environment work smoothly, especially when there are multiple contributors, which is frequent with large sites. Expressroom also provides us with a means to view and consider previews of the site in the development mode before we make the site live, and provides e-commerce and search result functionality. As a custom solution developer, Lattice Group uses Expressroom’s APIs in our solutions to extend the product's functionality and create the right solution applications.