undb

undb is an open-source, no-code platform and backend-as-a-service (BaaS) that lets you build custom applications quickly. Think of it as a flexible, self-hostable alternative to tools like Airtable. You can create databases, design interfaces, and set up workflows without writing code. The core idea is to give you the building blocks for applications—like data tables, forms, and views—while keeping you in control of your data and infrastructure.

It works by providing a set of visual tools. You start with a table for your data, then choose how to display and interact with it. undb offers six different view types: a simple Grid for spreadsheets, a Kanban board for moving tasks through columns, a Calendar for scheduling, a Gallery for visual content, a Pivot table for analysis, and a Form for data entry. The platform is built with modern technologies like Bun, Svelte, and SQLite, and it's fully open-source, so you can host it on your own servers and customize it as needed.

This tool is a strong fit for developers and small teams who need to spin up internal tools, prototypes, or lightweight applications without committing to a full development cycle. It's particularly useful for creating custom project trackers, CRM systems, event planning boards, or inventory management dashboards. If you value data privacy and want to avoid vendor lock-in, undb's self-hosted, open-source approach makes it a practical choice.