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Best Open-Source Retool Alternatives (2026)

20 self-hostable, open-source projects that replace Retool — without per-user pricing that scales painfully. Each is scored for how hard it is to self-host, with one-click deploy options where they exist.

Retool's per-user pricing scales painfully once internal tools spread beyond a small team, and self-hosting the paid tiers still ties you to its licensing. Open-source builders give you the same drag-and-drop admin panels without per-seat costs and let you keep the apps and their data entirely on your own infrastructure.

Focused business analysis with charts and graphs on a laptop in a modern office setting.
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Our picks at a glance

Easiest to self-host
Appsmith

Difficulty 3/5 with the broadest deploy matrix (One-Click, Docker, Compose, Kubernetes, manual); all four options share the 3/5 floor.

Most powerful
Budibase

Combines internal-app building, automations, and its own database, so you can ship tools without wiring up external storage first.

Most active
Appsmith

At ~37k stars it edges out ToolJet (~35k) for the most momentum in this group.

Best managed option
Appsmith

Offers official managed hosting alongside the widest self-host deploy options, making either route straightforward.

Compare all 20 alternatives

ProjectDeployManagedLicense
Supabase
TypeScript
107k ★
3/5
Moderate
Docker
Docker Compose
+1
Apache-2.02 days agoRepo
PocketBase
Go
60k ★
1/5
Effortless
Manual
Docker
MIT7 days agoRepo
DBeaver Community
Java
51k ★
1/5
Effortless
Manual
Apache-2.02 days agoRepo
Appsmith
TypeScript
40k ★
3/5
Moderate
One-Click
Docker
+3
Apache-2.03 days agoRepo
MindsDB
Docker
39k ★
3/5
Moderate
Docker
Docker Compose
Elastic-2.019 days agoRepo
ToolJet
JavaScript
38k ★
3/5
Moderate
One-Click
Docker
+3
AGPL-3.02 days agoRepo
Directus
Nodejs
37k ★
3/5
Moderate
Docker
Docker Compose
BUSL-1.12 days agoRepo
Budibase
TypeScript
28k ★
3/5
Moderate
One-Click
Docker
+3
GPL-3.02 days agoRepo
ChartDB
Nodejs
23k ★
2/5
Easy
Docker
Manual
AGPL-3.013 days agoRepo
Cube
TypeScript
20k ★
3/5
Moderate
Docker
Docker Compose
+1
Apache-2.02 days agoRepo
Windmill
Rust
17k ★
3/5
Moderate
Docker
Docker Compose
+2
AGPL-3.02 days agoRepo
Bytebase
Docker
14k ★
2/5
Easy
Docker
Docker Compose
+2
MIT2 days agoRepo
Adminer
PHP
7.5k ★
2/5
Easy
Docker
Manual
Apache-2.05 days agoRepo
DbGate
JavaScript
7.2k ★
2/5
Easy
Docker
Manual
MIT2 days agoRepo
Rowy
TypeScript
6.8k ★
3/5
Moderate
Manual
Docker
Apache-2.01 year agoRepo
CloudBeaver
Docker
5k ★
2/5
Easy
Docker
Docker Compose
+1
Apache-2.02 days agoRepo
Franchise
JavaScript
4.2k ★
1/5
Effortless
Manual
MIT4 years agoRepo
Chartbrew
Nodejs
4k ★
3/5
Moderate
Docker
Docker Compose
+1
MIT2 days agoRepo
Querybook
Python
2.3k ★
4/5
Involved
Docker
Docker Compose
Apache-2.019 days agoRepo
Azimutt
Elixir
2.2k ★
3/5
Moderate
Docker
Docker Compose
+1
MIT1 month agoRepo

What to look for: Check how well the builder connects to your existing databases and APIs, whether it ships a built-in datastore (Budibase does) or expects you to bring your own, and whether it leans visual (Appsmith, ToolJet, Budibase) or code-first (Windmill turns scripts into apps and workflows). Match the model to who's building: analysts want drag-and-drop, engineers may prefer Windmill's script-driven approach.

Head-to-head:Supabase vs RetoolPocketBase vs RetoolDBeaver Community vs RetoolAppsmith vs RetoolMindsDB vs Retool

The alternatives, reviewed

  1. #1
    Supabase
    Self-host: Moderate

    Open-source Firebase alternative built on PostgreSQL with realtime and auth

    107k TypeScript Apache-2.0 2 days ago
    How it compares to Retool
    • Self-hosted Docker Compose stack is complex: 8+ services including Kong, GoTrue, PostgREST, Realtime
    • Studio table editor is less polished than Airtable UX for non-technical users
    • Edge Functions are limited to Deno; no Node.js runtime in the self-hosted edition
    RepoDetails & deploy →
  2. #2
    PocketBase
    Self-host: Effortless

    Single-file open-source backend: SQLite database, auth, file storage, realtime

    60k Go MIT 7 days ago
    How it compares to Retool
    • SQLite single-file storage is not suitable for high write-concurrency production workloads
    • No built-in spreadsheet-style grid view for non-developers; admin UI is developer-focused
    • Horizontal scaling requires additional infrastructure; no native clustering support
    RepoDetails & deploy →
  3. #3
    DBeaver Community
    Self-host: Effortless

    Universal database tool for developers — SQL editor, ERD, and data browser

    51k Java Apache-2.0 2 days ago
    How it compares to Retool
    • Desktop-only; no web or team-sharing capabilities in the Community Edition
    • Collaboration features (shared connections, team queries) require the paid Enterprise Edition
    • Heavy JVM startup time and memory footprint compared to newer database tools
    RepoDetails & deploy →
  4. #4
    Appsmith
    Self-host: Moderate

    Open-source low-code platform to build internal apps and admin panels fast

    40k TypeScript Apache-2.0 3 days ago
    How it compares to Retool
    • Self-hosted stack is resource-heavy (MongoDB, Redis) and can be memory-hungry.
    • Some advanced features (SSO, audit logs, custom branding) require a paid plan.
    • Editor can feel sluggish on very large or complex apps.
    • Mobile/responsive layout support is weaker than desktop app building.
    RepoDetails & deploy →
  5. #5
    MindsDB
    Self-host: Moderate

    AI layer for existing databases: train and query ML models with standard SQL

    39k Docker Elastic-2.0 19 days ago
    How it compares to Retool
    • Elastic-2.0 license restricts commercial competing use cases
    • Self-hosted ML training is resource-intensive; GPU support requires additional setup
    • Not a full spreadsheet or no-code database replacement; primarily targets developers and data engineers
    • Fewer pre-built connectors than enterprise ETL platforms like dbt or Fivetran
    RepoDetails & deploy →
  6. #6
    ToolJet
    Self-host: Moderate

    Open-source low-code platform for building internal tools and dashboards

    38k JavaScript AGPL-3.0 2 days ago
    How it compares to Retool
    • Some enterprise features (SSO, audit logs, advanced RBAC) are paid-only.
    • Fewer polished, battle-tested connectors than Retool's large catalog.
    • Complex apps can hit performance and editor-ergonomics limits.
    • Documentation gaps around advanced/custom component scenarios.
    RepoDetails & deploy →
  7. #7
    Directus
    Self-host: Moderate

    Instant REST and GraphQL API for any SQL database with an intuitive admin app

    37k Nodejs BUSL-1.1 2 days ago
    How it compares to Retool
    • BUSL-1.1 license prohibits competing managed-hosting products without a commercial license
    • No built-in spreadsheet-style formula or pivot table UI like Airtable
    • Automations (Flows) are less mature than dedicated workflow tools like Zapier
    • Advanced data visualization requires an external BI tool; Directus provides data, not charts
    RepoDetails & deploy →
  8. #8
    Budibase
    Self-host: Moderate

    Open-source low-code platform for internal apps, automations, and its own database

    28k TypeScript GPL-3.0 2 days ago
    How it compares to Retool
    • Some enterprise features (SSO, enforced RBAC, audit) are behind paid Business Source License tiers.
    • Built-in database is more limited than a dedicated Airtable for complex relations.
    • Fewer connectors and a smaller ecosystem than Retool.
    • Custom-component and theming flexibility is more constrained than hand-built apps.
    RepoDetails & deploy →
  9. #9
    ChartDB
    Self-host: Easy

    Browser-based database diagram editor that visualizes your schema with a single query

    23k Nodejs AGPL-3.0 13 days ago
    How it compares to Retool
    • Diagramming and visualization only; no data editing, querying, or CRUD interface
    • No team collaboration features (comments, live multiplayer editing) in self-hosted version
    • No support for NoSQL or non-relational database schemas
    • No migration generation or schema diffing workflow tools
    RepoDetails & deploy →
  10. #10
    Cube
    Self-host: Moderate

    Semantic layer and headless BI for building data apps on any database

    20k TypeScript Apache-2.0 2 days ago
    How it compares to Retool
    • Not an end-user spreadsheet; requires developer effort to define data models in YAML or JavaScript
    • No built-in visual grid editor; intended to power custom-built frontends, not replace Airtable directly
    • Pre-aggregation setup for large datasets requires careful tuning and database-specific knowledge
    RepoDetails & deploy →
  11. #11
    Windmill
    Self-host: Moderate

    Developer platform to turn scripts into workflows and internal apps

    17k Rust AGPL-3.0 2 days ago
    How it compares to Retool
    • Code-first approach is more developer-oriented than Zapier's pure no-code experience.
    • AGPL plus a separate enterprise edition; some features (distributed workers at scale, SSO, audit) are gated.
    • Fewer turnkey SaaS connectors; you often write the integration glue yourself.
    • Self-hosting requires Postgres and worker configuration for real workloads.
    RepoDetails & deploy →
  12. #12
    Bytebase
    Self-host: Easy

    Database schema change and version control for DevOps teams

    14k Docker MIT 2 days ago
    How it compares to Retool
    • No built-in data editing UI comparable to Airtable's spreadsheet-like interface
    • Managed cloud tier is limited; on-prem enterprise features require a paid license
    • Lacks no-code query builder; SQL knowledge still required for most tasks
    • Snowflake and some enterprise connectors gated behind paid plans
    RepoDetails & deploy →
  13. #13
    Adminer
    Self-host: Easy

    Full-featured database management in a single PHP file

    7.5k PHP Apache-2.0 5 days ago
    How it compares to Retool
    • No built-in access control beyond HTTP auth; unsuitable as a team-facing data portal
    • No chart or dashboard visualisation; purely a raw data management tool
    • No audit logging or change approval workflows
    • UI is functional but dated compared to modern alternatives
    RepoDetails & deploy →
  14. #14
    DbGate
    Self-host: Easy

    Cross-platform database manager for MySQL, PostgreSQL, MongoDB, SQLite and more

    7.2k JavaScript MIT 2 days ago
    How it compares to Retool
    • No spreadsheet-style formula engine; it is a database manager, not a spreadsheet replacement
    • Multi-user team collaboration features are limited; primarily designed for individual use
    • BI/visualization capabilities are basic compared to dedicated tools like Metabase
    RepoDetails & deploy →
  15. #15
    Rowy
    Self-host: Moderate

    Spreadsheet UI over Firestore or PostgreSQL with built-in cloud function automations

    6.8k TypeScript Apache-2.0 1 year ago
    How it compares to Retool
    • Primary backend is Google Firestore; self-hosted PostgreSQL support is less mature
    • No offline mode; requires live database connection at all times
    • Automation and cloud function execution is tightly coupled to Google Cloud Functions for the Firestore path
    RepoDetails & deploy →
  16. #16
    CloudBeaver
    Self-host: Easy

    Web-based database manager — the browser edition of DBeaver

    5k Docker Apache-2.0 2 days ago
    How it compares to Retool
    • No-code data editing and app-building features (à la Retool) are absent
    • SSO, LDAP, and team-management features require the paid Enterprise Edition
    • No built-in charting or dashboard layer
    • Performance can lag on very large result sets in the browser
    RepoDetails & deploy →
  17. #17
    Franchise
    Self-host: Effortless

    Notebook-style SQL client that runs entirely in the browser with DuckDB

    4.2k JavaScript MIT 4 years ago
    How it compares to Retool
    • Project has had minimal maintenance since 2022; compatibility with modern browsers may degrade
    • Remote database connections require a separately hosted relay proxy to avoid CORS issues
    • No user authentication, access control, or saved query sharing for teams
    RepoDetails & deploy →
  18. #18
    Chartbrew
    Self-host: Moderate

    Connect databases and APIs to build and share live charts

    4k Nodejs MIT 2 days ago
    How it compares to Retool
    • No full-featured app builder; purely a charting and dashboard tool, not a Retool replacement for forms or CRUD
    • Data transformation is limited compared to Retool's JavaScript transformer
    • Alerts and anomaly detection are absent
    • Team/SSO features require the paid cloud tier
    RepoDetails & deploy →
  19. #19
    Querybook
    Self-host: Involved

    Pinterest's open-source big data query notebook for collaborative SQL analytics

    2.3k Python Apache-2.0 19 days ago
    How it compares to Retool
    • Primarily designed for big data query engines (Hive, Presto); poor fit for everyday OLTP databases
    • No spreadsheet-style formula editing; purely a SQL notebook tool
    • Requires Elasticsearch and Celery workers, adding significant infrastructure overhead
    RepoDetails & deploy →
  20. #20
    Azimutt
    Self-host: Moderate

    Visual database schema explorer built for large, complex schemas

    2.2k Elixir MIT 1 month ago
    How it compares to Retool
    • Focused on schema exploration and documentation, not data editing or app building
    • No spreadsheet or pivot-table interface
    • Collaboration features are basic on the self-hosted edition
    • Elixir stack is less familiar to most ops teams
    RepoDetails & deploy →

The verdict

Appsmith is the strongest all-around Retool replacement: most active, widest deploy options, Apache-2.0 licensed, and available as managed hosting. Choose Budibase if you want a built-in database and automations in one package, or Windmill if your team prefers turning scripts into tools over a pure visual builder.

Still deciding? Compare Supabase vs PocketBase side by side →

Retool alternatives — frequently asked questions

What is the best open-source Retool alternative?

Appsmith is the most popular and well-rounded (~37k stars, Apache-2.0, broad deploy options). ToolJet and Budibase are close competitors, and Windmill is the pick for script-driven, developer-first internal tools.

Which Retool alternative is easiest to self-host?

All four (Appsmith, ToolJet, Budibase, Windmill) are rated 3/5. Appsmith, ToolJet and Budibase each offer a One-Click deploy in addition to Docker and Kubernetes, so they're the quickest to stand up.

Can I avoid Retool's per-user pricing?

Yes. Self-hosting any of Appsmith, ToolJet, Budibase or Windmill removes per-seat licensing entirely; you pay only for the infrastructure you run them on.

Which one includes its own database?

Budibase ships with its own built-in database alongside the app builder. Appsmith, ToolJet and Windmill connect to your existing databases and APIs instead.

Is there a more code-first option than the visual builders?

Windmill turns scripts into workflows and internal apps, making it the most developer/code-centric choice. It's written in Rust and licensed AGPL-3.0.

Do these offer managed hosting like Retool Cloud?

Yes. Appsmith, ToolJet, Budibase and Windmill all provide an official managed/cloud option, so you can move off Retool without self-hosting if you prefer.

Keep exploring

All Databases & Spreadsheets →Self-hosted directory →Easiest to self-host →
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