Ultralight
YC W19San Francisco, US · Founded 2017 · 1 employees · 2 known investors
Ultralight is a GPU-accelerated HTML rendering toolkit that embeds modern web content in games and native applications across Windows, macOS, Linux, and game consoles. Built on a lightweight WebKit fork, it serves game developers and native app developers who need high-performance, resource-efficient HTML rendering.
Developer ToolsEnterprise SoftwareGamingHardwareHard TechB2BAPIUnited States of AmericaAmerica / Canada
Founders & leadership· Y Combinator alumni (W19)
Ultralight was founded in 2017 by Adam Simmons.
AS
Adam Simmonsin𝕏Founder & CEOAdam Simmons has 15 years of experience developing tools for games and desktop applications, with background in graphics research and expertise in C++, GPU, and UI systems.
Investors · 2
Funding
SEC filings, press & company announcements$9.3M disclosed across 1 of 3 rounds · 2026
- $9.3MSeedApr 2026 · 4 sourcesSource ↗
Source: company announcements and press reports — follow each round's link for the claim.
In the news
Frequently asked questions
- What does Ultralight do?
- Ultralight is a GPU-accelerated HTML rendering toolkit that embeds modern web content in games and native applications across Windows, macOS, Linux, and game consoles. Built on a lightweight WebKit fork, it serves game developers and native app developers who need high-performance, resource-efficient HTML rendering.
- Who founded Ultralight?
- Ultralight was founded by Adam Simmons in 2017.
- Who are Ultralight's investors?
- Ultralight's investors include Y Combinator, Wisdom Ventures.
- How much funding has Ultralight raised?
- Ultralight has disclosed $9.3M raised across 1 of its 3 known rounds.
- Where is Ultralight headquartered?
- Ultralight is headquartered in San Francisco, US.