There are 2 open-source alternatives to OutSystems in this directory. The most popular is ToolJet with 35.0k GitHub stars, followed by Budibase(23.6k stars). All are open source, free to use, and many can be self-hosted.
| # | Tool | Stars | Language | License |
|---|---|---|---|---|
| 1 | ToolJet A low-code platform for building business applications with a drag and drop builder, supporting integration with various databases, cloud storages, and APIs. | 35.0k | JavaScript | GNU Affero General Public License v3.0 |
| 2 | Budibase Create business apps and automate workflows in minutes using a no code / low code platform. Supports PostgreSQL, MySQL, MariaDB, MSSQL, MongoDB, Rest API, Docker, K8s, and more. | 23.6k | TypeScript | Other |
A low-code platform for building business applications with a drag and drop builder, supporting integration with various databases, cloud storages, and APIs.
Create business apps and automate workflows in minutes using a no code / low code platform. Supports PostgreSQL, MySQL, MariaDB, MSSQL, MongoDB, Rest API, Docker, K8s, and more.
The top three are ToolJet(35.0k stars), Budibase(23.6k stars). All are open source and free to use.
Yes. Every tool listed here is open source and free to use in your own projects. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Many of the alternatives listed are self-hostable. Each tool's page lists hosting details, system requirements, and licensing terms.
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