Mendix vs REI3
Mendix
mendix.comREI3
rei3.deSide by side
| Figure | Mendix | REI3 |
|---|---|---|
| Price from | $1,090/mo | €3.50/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | — |
| Linux | Yes | Yes |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | — | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 8 | 7 |
| Spec score · No-code app builders | 9.3 (#5) | 8.8 (#30) |
| API integrations | Yes | Yes |
| App types | both | web |
| Built-in database | Yes | Yes |
| Deployment | Mendix says applications can be deployed to public cloud or on-premises, including air-gapped environments. | REI3 can be hosted on-premise or in the cloud, and its applications are accessed from devices with a modern browser. |
| Free plan | Yes | Yes |
| Integrations | Mendix Connect Catalog can be populated with connectors to enterprise data sources such as Siemens Teamcenter, SAP, and Mendix applications. | Connectors include REST APIs, LDAP and Active Directory, OpenID Connect, SMTP, IMAP, and calendar data via ICS. |
| Security | Mendix describes security, governance, data privacy, and compliance as priorities across its platform, applications, and security operations. | REI3 supports built-in end-to-end encryption with user key management, multi-factor authentication, and role and record-level access controls. |
| Support | The pricing page lists Standard support from 9 AM to 5 PM and Premium support 24/7, excluding local holidays. | The free offering lists contact-form support with best-effort response, while Professional lists email support with a one-work-day response time. |
| User authentication | Yes | Yes |
Plans
Mendix
- FreeFree
- Standard — One App$1,090 a month
- Standard — Unlimited Apps$2,725 a month
- PremiumPriced on request
- PremiumPrice not published
- FreePrice not published
- Premium — One AppPriced on request
- Premium — Unlimited AppsPriced on request
REI3
- FreeFree
- REI3 Professional (1–10 users)€5.50 a month
- REI3 Professional (11–25 users)Price not published
- REI3 Professional (26–50 users)€4.50 a month
- REI3 Professional (51–100 users)Price not published
- REI3 Professional (101+ users)€3.50 a month
- REI3 Professional€3.50 a month
In their own words
Mendix
Mendix is a low-code platform for building, running, and orchestrating apps and agents for a hybrid workforce. In Studio Pro, teams model application logic, data, workflows, and user experience visually, while retaining the option to add custom code. Its AI capabilities span planning, generation, deployment, and operations, and it can connect external language models, agents, knowledge bases, and tools. The Mendix Connect Catalog can include connectors to enterprise data sources such as Siemens Teamcenter, SAP, and Mendix applications. Applications can be deployed to public cloud or on-premises, including air-gapped environments. Listed capabilities include mobile publishing, a built-in database, user authentication, and API integrations. The free package allows unlimited users and one deployment environment per application, but includes neither product support nor guaranteed availability. Standard pricing is $1,090 a month for One App or $2,725 a month for Unlimited Apps; cloud deployment may cost extra. Mendix was founded in Rotterdam in 2005 and says it was acquired by Siemens in 2018.