The Founder Tape.

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On the tape

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OpenBuilder · The Founder Tape · The Founder Tape

The Founder Tape.

The shelf Directory Notes Log in

On the tape

YC Fall 2025Seed$500KNov 2025732 views1 min

OpenBuilder

Open source alternative to Lovable for building apps with AI.

openbuilder.dev ↗YC profile ↗

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Company intel

About OpenBuilder

Open source alternative to Lovable

What they build

OpenBuilder is an open-source platform for building applications with AI - positioned as an alternative to Lovable for teams who want more control over their stack.

From the launch

OpenBuilder - YC Fall 2025

Field & market

Sector

B2B

Tags

Launch video
Generative AI
B2B
No-code
Infrastructure
AI
Developer Tools

Funding

Seed$500K
Led by Y Combinator

Founders

Paul LiFounder
LinkedIn ↗X ↗

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Study

How to make a launch video
Pre-seed launch videos
AI startup launch videos
DevTools launch videos

Featured on:

James JiangFounder

Quick links

openbuilder.dev
LinkedIn
YC profile
Launch video (YouTube)

At a glance

YC batch: Fall 2025
Industry: B2B
HQ: San Francisco
Team size: 3
Founded: 2026
Status: Active
YC partner: Aaron Epstein

Investors

Y Combinator

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Featured onBowora

Est. 2026 · Study the cut