Best Open-Source Low-Code Platforms 2026: 6 Options Compared

Low-code platforms split into two camps, and picking the wrong camp wastes a month. Internal-tool builders such as Appsmith, Budibase and ToolJet let you drag tables and forms onto a canvas, connect them to a database or API and write JavaScript only where you need it. Flow builders such as Node-RED and Flowise wire together events and AI steps instead of screens. If your goal is an admin panel over Postgres, start with the first camp; if it is moving data between services or chaining language-model calls, start with the second. All six tools here are open source, so you can self-host with Docker and avoid per-user fees, but read the fine print: Budibase and ToolJet publish most code under GPL or AGPL while paid features sit under separate terms, and Appsmith keeps some enterprise code apart. The practical trade-off is that self-hosting gives you unlimited users but makes you responsible for upgrades, backups and single sign-on, which vendors usually charge for. Test one real screen before committing: build the form your team will actually use, connect your real database, and check how permissions work. A platform that looks fast on a demo table can feel slow once you need row-level access rules.

Appsmith

Drag-and-drop builder for admin panels and dashboards over databases and APIs, Apache-2.0 licensed. The cloud free plan is capped at 5 users, so self-hosting is the route when your team is larger.

Price: Free (Free plan: up to 5 users on cloud, 5 workspaces, 3 Git repos); paid from $15 per user/month (Business) (Appsmith pricing, checked 2026-10-22).

Platforms and license: Web, Self-hosted. Apache-2.0 (open source) (license source).

Project activity: 41.1k GitHub stars · latest release v2.5.1 (Oct 21, 2026) · last commit Oct 27, 2026

Best for: Internal dashboards over SQL databases.

Worth knowing: Self-hosted accounts get a 15-day Business trial, then can continue on the Free tier.

Budibase

Self-hosted open plan has unlimited apps, automations and users, but only one workspace and one-day automation logs. Core is GPL-3.0 with paid features under separate terms.

Price: Free (Open source plan is free and self-hosted with unlimited apps, automations and users; 1 workspace, 1-day automation log retention, community support); paid from $19 per month (Pro) (Budibase pricing, checked 2026-10-22).

Platforms and license: Web, Self-hosted. GPL-3.0 (client and component libraries MPL-2.0; paid features under BSL) (open source) (license source).

Project activity: 28.4k GitHub stars · latest release v3.50.0 (Oct 19, 2026) · last commit Oct 27, 2026

Best for: Small teams that want forms and approvals fast.

ToolJet

AGPL-3.0 builder with a free self-hosted Community Edition. Its free cloud plan allows only 2 builders and 50 end users, so scale means self-hosting or paying $23 per builder.

Price: Free (Cloud free plan: 2 builders, up to 50 end users, 10 apps, 500 ToolJet DB rows; self-hosted Community Edition is free); paid from $23 per builder/month (Basic) (ToolJet pricing, checked 2026-10-22).

Platforms and license: Web, Self-hosted. AGPL-3.0 (open source) (license source).

Project activity: 41.1k GitHub stars · latest release v3.20.251-lts (Oct 27, 2026) · last commit Oct 27, 2026

Best for: Teams that want a large widget library.

Worth knowing: Fully offline operation needs a self-hosted Enterprise air-gapped add-on with no listed price.

Node-RED

Apache-2.0 flow editor for wiring devices, APIs and online services together in a browser. It is about event flows, not screens, so you build dashboards with add-on nodes.

Price: Free (Node-RED pricing, checked 2026-10-23).

Platforms and license: Self-hosted (Node.js). Apache-2.0 (open source) (license source).

Project activity: 23.8k GitHub stars · latest release 5.0.9 (Oct 21, 2026) · last commit Oct 26, 2026

Best for: IoT and event-driven automation.

Worth knowing: Browser-based flow editor on Node.js. Free under Apache-2.0 and self-hosted only, with no managed plan in the repo.

Flowise

Apache-2.0 drag-and-drop builder for language-model apps and agents, self-hosted on Node.js. Some enterprise code sits under a commercial license, so check which features you rely on.

Price: Free (Flowise pricing, checked 2026-10-22).

Platforms and license: Self-hosted (Node.js, Docker). Apache-2.0; enterprise code under a commercial license (open source) (license source).

Project activity: 55.5k GitHub stars · latest release flowise@3.1.4 (Jul 29, 2026) · Archived on GitHub

Best for: Prototyping AI chatbots and agent flows.

Worth knowing: Node-based visual builder for LLM flows. Free under Apache-2.0 for the core; enterprise directories are under a separate commercial license.

Webstudio

Open-source visual builder for production websites, with the core under AGPL-3.0. It targets marketing sites rather than internal tools, and one component package is proprietary.

Price: Free (Core is open source and self-hostable; hosted-plan pricing was not readable) (Webstudio pricing, checked 2026-10-22).

Platforms and license: Web, Self-hosted. AGPL-3.0-or-later (core); sdk-components-animation is proprietary (open source) (license source).

Project activity: 9.1k GitHub stars · latest release 0.308.0 (Oct 26, 2026) · last commit Oct 27, 2026

Best for: Designers who want a Webflow-style editor you can host.

Which one to pick

• You need an admin panel over your database this week: Appsmith
• Your team wants approvals and forms with unlimited users on your own server: Budibase
• You are connecting devices or APIs rather than building screens: Node-RED
• You are prototyping a chatbot or agent: Flowise