tldraw
tldraw is an infinite canvas SDK for the web, founded in 2021. Its flagship app, tldraw.com, is a popular free white-board and diagramming app that provides users with a collaborative canvas without any login. In addition to tldraw.com, tldraw has launched popular viral AI apps, including Make Real, tldraw computer, and Teach, which demonstrate integrations between the tldraw canvas SDK and AI technologies.
tldraw
tldraw is an infinite canvas SDK for the web, founded in 2021. Its flagship app, tldraw.com, is a popular free white-board and diagramming app that provides users with a collaborative canvas without any login. In addition to tldraw.com, tldraw has launched popular viral AI apps, including Make Real, tldraw computer, and Teach, which demonstrate integrations between the tldraw canvas SDK and AI technologies.
TL;DR
What: Open-source infinite-canvas SDK and free collaborative web whiteboard (tldraw.com)
Founded: 2021
Founder: Steve Ruiz
Employees: 17
Funding: Total reported ~$24.09M; seed and later Series A rounds (investors include Lux Capital, Definition)
Company Overview
Problem Domain
Real-time collaborative whiteboarding and embeddable canvas SDKs for web applications.
Founded
2021
Industry
Developer tools / Collaboration software
Funding Track Record
$2.7M
Seed round reported Dec 16, 2022
Series A announced with reported $40M pre-money valuation
Later Series A entry dated Apr 9, 2025
Investor Signal
“Institutional VC backing (Lux Capital; Definition) with participation from early-stage investors and notable individual backers”