Appsmith vs Budibase
Both are alternatives to Retool. Here's how they stack up — verified facts, no spin.
Also searched as Budibase vs Appsmith — same comparison, one verdict.
Appsmith
TOP PICKThe closest open equivalent — drag, drop, connect, self-host.
Appsmith is the most direct open replacement for Retool: a drag-and-drop builder with widgets, JavaScript anywhere, and connectors for the major databases and APIs. It self-hosts with Docker or Kubernetes and the core is Apache-2.0, which is the most permissive licence of the serious options here. Around 40.6k stars. If your reason for reading this page is per-builder pricing, this is the first thing to try, and the conceptual jump from Retool is small enough that an existing Retool user is productive quickly.
Budibase
Brings its own database, so a tool can exist before the data does.
Budibase differs from the others in a way that matters more than it sounds: it includes an internal database, so you can build a working tool before you have a backend to point it at. That makes it the fastest option for the common case of a team that needs a form, a table and some approvals — not a dashboard over an existing production database. It also connects to external sources when you have them. GPL-3.0 core with a commercial enterprise tier, around 28k stars.
Side by side
| Appsmith | Budibase | |
|---|---|---|
| Sovereignty Score | 90 | 87 |
| Open source | Yes | Yes |
| Self-hostable | Yes | Yes |
| Local-first | Yes | Yes |
| License | Apache-2.0 (core; some enterprise features are commercial) | GPL-3.0 (core; enterprise tier is commercial) |
| Pricing | Free and open source to self-host. Paid cloud and enterprise tiers. | Free and open source to self-host. Paid cloud and enterprise plans. |
Appsmith is Macrostack's recommended Retool alternative, so it's our pick here.
Appsmith
Strengths
- +Closest feature match to Retool of anything open
- +Apache-2.0 core — the most permissive licence among serious options
- +Self-hosts on Docker or Kubernetes with no per-builder fee
- +Large widget library and broad database connector support
Trade-offs
- −Some governance and SSO features sit behind the paid tier
- −Fewer third-party integrations than Retool out of the box
- −You now operate a service, including upgrades and backups
- −Polish trails Retool in places, particularly complex state
Budibase
Strengths
- +Built-in database — build a tool without wiring a backend first
- +Strong automations and form handling
- +Self-hosts easily on Docker or Kubernetes
- +Good fit for approvals and internal workflows rather than dashboards
Trade-offs
- −Weaker than Appsmith or Retool for complex data applications
- −GPL-3.0 copyleft is worth reading before you modify it
- −Enterprise features behind the paid tier
- −Smaller connector library than the alternatives
Related alternative guides
Facts verified 2026-08-07. Licenses and pricing change — spotted something out of date? That's a correction we want.