Structr

What Structr is

Structr is an open-source low-code platform for building complex applications, including content hubs, knowledge graphs, document and digital asset management systems, and product information management tools. Its graph database foundation uses Neo4j. A visual schema editor lets teams model systems, while the Flow Engine combines visual programming with existing scripts. The Data Editor supports secure CRUD operations, type inheritance, import and export, and JSON or REST APIs. A drag-and-drop Page Builder supports creating web pages and applications.

Structr also provides integration options through its Code Area, including outbound HTTP APIs, OpenAPI/Swagger, and external databases accessed through SQL, GQL/Cypher, and MongoDB drivers. Authentication options include OAuth and JWT. Access controls can be set for users, groups, roles, types, schemas, and individual objects; listed security features also include LDAP synchronization and salted SHA-512 password hashes. The platform can be self-hosted or deployed in the cloud, with Docker and Kubernetes support. Community is free for self-hosting and includes unlimited apps. Cloud Free costs nothing and includes one app and one user; Cloud Basic costs €29 a month and includes one app and 100 users. Enterprise is available on request.

Who it suits

Structr suits teams that want to build applications with visual modeling, workflows, APIs, and scripting, including organizations working on content hubs, knowledge graphs, or document management. Its self-hosted Community plan fits users who want the open-source platform, while its cloud plans offer hosted options with defined app and user counts.

Limits

Cloud Free costs nothing and is limited to one app and one user. Cloud Basic costs €29 a month and is limited to one app and 100 users. The self-hosted Community plan lists unlimited apps.

Getting started

1. Visit the Structr website.
2. Choose the self-hosted Community plan or a cloud plan.
3. For self-hosting, use a Debian package, cross-platform ZIP, or Docker image.
4. For Cloud Free, start with one app and one user without payment details.
5. Model your system in the schema editor, then build flows, data, or pages as needed.

Verdict

Choose Structr if you need a low-code platform with graph-based data modeling, visual workflows, web building, and API or database integrations. The free Community plan allows unlimited self-hosted apps, while Cloud Free limits use to one app and one user. Cloud Basic costs €29 a month and supports up to 100 users for one app.