Head-to-Head Comparison · Alternative to Caspio · 🗄️ databases
Caspio vs REI3
A sober business-app builder with forms, reports, roles, workflows, and no per-user meter. Here is how REI3 ($0/mo open source) stacks up against Caspio ($300/mo) across cost, hosting, data privacy, and real-world trade-offs.
Caspio vs REI3 Specification Matrix
facts verified 2026-08-10
| Dimension | Caspio (Paid) | REI3 (Replacement) |
|---|---|---|
| Monthly Price | $300 / mo | $0 / mo |
| 1-Year Cost (1 seat) | $3,600 / yr | $0 / yr (Save $3,600) |
| 1-Year Cost (5 seats) | $18,000 / yr | $0 / yr (Save $18,000) |
| 1-Year Cost (10 seats) | $36,000 / yr | $0 / yr (Save $36,000) |
| Source & License | Proprietary SaaS | open source MIT |
| Where It Runs | Vendor Cloud | Self-host (your server) |
| Platforms | Web / Cloud | desktopmobilewebself-hostedone-click install |
| GitHub Stars | — | ★ 571 (active aug 2026) |
Deep Dive: Switching from Caspio to REI3
Trade-offs, installation & data architecture
What you trade away
It lacks Caspio's turnkey hosted deployment and embedded public-app workflow, leaving server operation and external publishing to the user.
How to deploy REI3
Native Linux/Windows server package or Docker Compose, connected to PostgreSQL
What it takes to run
You must provision PostgreSQL and configure a server/reverse proxy; it is not a managed one-click workspace
Where your data lives
Human-readable application records and configuration live in a PostgreSQL database controlled by the operator
Why fork REI3 instead of vibe-coding a Caspio clone?
A consolation build is possible, but the paid product's decisive value sits outside a solo rebuild. For Caspio, publish one database-backed business app with forms and reports. The hard boundary is managed database, app builder, integrations, security, scale, and support, plus data model flexibility, collaboration, and integrations.
Caspio vs REI3 FAQ
Is REI3 a good free alternative to Caspio?+
Yes. REI3 is a verified open-source (MIT) replacement for Caspio. A sober business-app builder with forms, reports, roles, workflows, and no per-user meter.
What is the catch when switching from Caspio to REI3?+
It lacks Caspio's turnkey hosted deployment and embedded public-app workflow, leaving server operation and external publishing to the user.
How much do you save switching from Caspio to REI3?+
Caspio costs $300/mo ($3,600/yr) per seat, whereas REI3 is $0/mo. Switching saves $3,600/yr for a solo user, $18,000/yr for a 5-person team, and $36,000/yr for a 10-person team.
How do I install or self-host REI3 instead of Caspio?+
Install: Native Linux/Windows server package or Docker Compose, connected to PostgreSQL. Setup: You must provision PostgreSQL and configure a server/reverse proxy; it is not a managed one-click workspace
