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Stack9

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What Stack9 is

Stack9 combines Stack9 Core, a configurable application-development platform, with Stack9 Experience, a digital-experience platform for content, marketing, and AI. Core generates PostgreSQL schemas, REST APIs, screens, and workflows from JSON-defined entities. Experience provides headless content management, marketing automation, customer data profiles, email, forms, analytics, AI personalization, journey orchestration, and digital asset support. Reusable connectors work with REST, direct databases, and other protocols, including systems such as FINEOS, identity platforms, ERP, CRM, and finance software. Queued webhooks retry form submissions automatically, while query-library queries and automations can be exposed to AI agents through MCP. Stack9 Core is delivered as a Docker image for AWS, hybrid, self-hosted, or multi-tenant SaaS deployments; Azure is technically supported with performance trade-offs. The platform documents more than 100 OpenAPI 3.0 endpoints and supports API keys or OpenID Connect. Pricing is available on request, with no free plan.

Who it suits

Stack9 suits government and enterprise organizations building portals, internal tools, and digital experiences. It is geared toward teams needing configurable development, headless content, integrations, and hybrid deployment.

What it does well

  • Generates schemas, APIs, screens, and workflows
  • Headless content and marketing capabilities
  • Reusable connectors and queued webhooks
  • Hybrid, self-hosted, and SaaS deployment options
  • Role-based and row-level access controls

What to know first

  • No published price list
  • No free plan
  • Azure support has stated performance trade-offs

Plans

PlanBilled and limitsPrice
Stack9Fixed per instance · hosting charged at cost by usage · email and communications charged by usage · support tiered by severityOn request

As stack9.info lists them, read 8 Oct 2026. The maker's own page has the final word.

Verdict

Stack9 brings application development and digital-experience functions into one configurable platform with extensive integration and deployment choices. Prospective customers must request a quote based on their instance, environment, integration, and support requirements.

Facts from Stack9's own pages

API
The platform documents more than 100 REST endpoints using OpenAPI 3.0 and supports API keys or OpenID Connect. · stack9.info, 8 Oct 2026
Compliance
April9 says it holds ISO 27001 certification; it states Stack9 itself is not SOC 2 certified and that IRAP applies to a specific engagement, not the product. · stack9.info, 8 Oct 2026
Core features
Stack9 generates PostgreSQL schemas, REST APIs, screens and workflows from JSON-defined entities. · stack9.info, 8 Oct 2026
Data residency
The maker states production, metadata, logs and AI processing run in Australian AWS regions, with backups and disaster recovery replication in Melbourne. · stack9.info, 8 Oct 2026
Deployment
Stack9 Core is delivered as a Docker image and supports AWS deployments, a hybrid or self-hosted model, and multi-tenant SaaS; Azure is technically supported with performance trade-offs. · stack9.info, 8 Oct 2026
Experience features
Stack9 Experience includes headless content management, marketing automation, customer data profiles, email, forms, analytics and AI personalization. · stack9.info, 8 Oct 2026
Headquarters
Brisbane, Queensland, Australia · stack9.info, 28 Sept 2026
Integrations
Stack9 supports reusable connectors for REST, direct database connections and other protocols, and describes use with systems including FINEOS, identity platforms, ERP, CRM and finance systems. · stack9.info, 8 Oct 2026
Pricing limit
The maker does not publish a price list and asks prospective customers to request a quote based on instance count, environments, integrations and support tier. · stack9.info, 8 Oct 2026
Product
Stack9 combines a configurable application development platform, Stack9 Core, with Stack9 Experience, a digital experience platform for content, marketing and AI. · stack9.info, 8 Oct 2026
Security
The maker says data is encrypted at rest and in transit, databases are isolated in private network subnets, and access is governed by role-based and row-level controls. · stack9.info, 8 Oct 2026
Support
Stack9 support is delivered by April9’s onshore Australian team, with a base package described as SLA-backed and tiered by severity. · stack9.info, 8 Oct 2026
Webhooks and agents
Form submissions can be sent through queued webhooks with automatic retries, and query-library queries and automations can be exposed to AI agents through MCP. · stack9.info, 8 Oct 2026
Who it serves
April9 describes Stack9 as a configurable low-code platform for organisations building portals, internal tools and digital experiences, including government and enterprise clients. · stack9.info, 8 Oct 2026

Where Stack9 stands on Freedom251

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