Structr

Structr is an open-source low-code platform that combines a graph database (Neo4j), visual schema editor, automatic REST APIs, server-side scripting, and page rendering engine into one integrated environment. Instead of assembling separate tools, you get everything needed to build data-driven web applications from a single platform.

Key advantages:

• Graph-powered performance - Neo4j's native graph storage makes complex, relationship-heavy data models perform efficiently without JOIN operations
• Instant schema changes - Modify your data model in milliseconds while the system runs, no migration scripts needed
• Automatic REST APIs - Every schema type becomes a REST endpoint with full CRUD operations immediately
• Visual development - Build applications using visual tools for schema design, page layouts, and workflow automation
• Self-hosted control - Deploy on your infrastructure with full data ownership and no vendor lock-in

Perfect for:

• Internal business applications (CRM, project management, asset tracking)
• Data management platforms with complex requirements
• Customer portals and workflow automation
• Applications integrating multiple data sources
• Prototypes that need to scale to production

Technical foundation:

• Runtime: Java on GraalVM with JavaScript scripting
• Database: Neo4j with Cypher query support
• Security: Built-in authentication, permissions, and access control
• Deployment: Docker, Debian packages, or standard Linux servers

Unlike traditional low-code platforms that force vendor lock-in and proprietary abstractions, Structr gives you the flexibility of custom development with the speed of visual tools. Your data stays in standard Neo4j format, your logic uses standard JavaScript, and your platform runs wherever you choose to deploy it.