Preswald is the latest offering from Structured Labs’ Y Combinator S23 cohort. Founded in 2023 by CEO Amrutha Gujjar and CTO Shivam Singhal, the San Francisco–based startup aims to transform how data analysts, engineers, and Python developers build interactive data apps. It combines a static-site generator with an AI agent to create lightweight, self-contained apps that are ready to deploy with a single command.
A Code-First Approach to Data Apps
Unlike heavy low-code platforms, Preswald lets users write plain Python scripts to define both logic and UI. It uses Pyodide to run Python in the browser, DuckDB for fast analytics, and Plotly or Matplotlib for visualizations. This code-first model allows developers to work with familiar libraries and workflows, without learning a new DSL or sacrificing control.
Intelligent AI Agent for Enhanced Interactivity
Preswald’s built-in AI agent helps transform simple scripts into full applications. By using natural-language prompts, the agent can scaffold dashboards, suggest UI elements, and even generate data queries. As a result, developers spend less time on boilerplate code. Meanwhile, organizations benefit from consistent internal tools.
Seamless Deployment and Enterprise Readiness
Preswald makes deployment simple. It supports Google Cloud Run and local serverless environments. One command is enough to turn a script into a production-ready app. With an Apache 2.0 license and an active GitHub community—featuring 3.7k stars and 644 forks—it is built for both innovation and enterprise use.
Community and Milestones
Preswald launched publicly on Product Hunt on May 5, 2025, where it ranked #1 for the day. Its GitHub page passed 1,000 stars soon after. The team continues to release frequent updates, such as v0.1.44 and v0.1.53, bringing new features and fixes. While the startup has not disclosed its seed funding, it is backed by Y Combinator, General Catalyst, and Z Fellows. The team focuses on product growth and community engagement.
Why Preswald Matters
Today, fast decision-making demands agile tools. Preswald helps teams build and share dashboards and internal tools quickly. It blends the flexibility of Python with browser-based computing and AI support. Thus, it solves key challenges in modern data workflows: speed, control, and ease of collaboration.
Structured Labs’ Preswald shows how open-source tools and AI can deliver smart, scalable solutions. For developers frustrated by bulky platforms, it offers a new path: build smarter, ship faster, and keep improving.
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