Directory / Alternatives to Retool

Open source alternatives to Retool

4 open source projects replace Retool, ranked by how safe each is to depend on.

ToolJet

93 · Healthy

Low-code platform for internal tools and workflows with many data-source connectors.

AGPL-3.0★ 41kLast commit today

Appsmith

93 · Healthy

Low-code builder for admin panels, dashboards and internal CRUD apps.

Apache-2.0★ 41kLast commit today

Budibase

88 · Healthy

Low-code platform for forms, portals and approval apps on top of your databases.

Open source (copyleft)★ 28kLast commit today

Windmill

83 · Healthy

Developer platform that turns scripts into workflows, internal UIs and scheduled jobs.

Open source (copyleft)★ 18kLast commit today

Source-available and unverified licenses

The code for these is public, but the license is not an OSI open source license, or we have not verified it yet. Check the license notes on each project before relying on it.

Directus

97 · Healthy

Data platform that puts an admin app and REST/GraphQL APIs on top of any SQL database.

Source-available, not open sourceRelicensed 2026★ 38kLast commit today

Directus

97 · Healthy

ToolJet

93 · Healthy

Appsmith

93 · Healthy

Budibase

88 · Healthy

At a glance

Health and license are separate verdicts: a project can be well maintained and still not be open source.

Project	Health	License	Stars	Last commit
ToolJet	93 · Healthy	AGPL-3.0	41k	today
Appsmith	93 · Healthy	Apache-2.0	41k	today
Budibase	88 · Healthy	Open source (copyleft)	28k	today
Windmill	83 · Healthy	Open source (copyleft)	18k	today
Directus	97 · Healthy	Source-available, not open sourceRelicensed 2026	38k	today

More in Internal tools & automation

Retool is a paid internal tools & automation product. See all open source internal tools & automation tools, ranked the same way.

Scores refresh nightly from GitHub. How we score.