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