
Quill is a computer software company that provides a messaging software built for productivity, not engagement. The company is a team of engineers and designers who previously helped build and launch Stripe, Square, and OpenAI. It was founded in 2017 and is headquartered in San Francisco, California.

Quill is a computer software company that provides a messaging software built for productivity, not engagement. The company is a team of engineers and designers who previously helped build and launch Stripe, Square, and OpenAI. It was founded in 2017 and is headquartered in San Francisco, California.
Product: Cross-platform team messaging app focused on productivity
Founded: 2017
Headquarters: San Francisco, California
Notable investors: Index Ventures, Sam Altman
Exit: Acquired by X (formerly Twitter) in December 2021
Team communication and workplace messaging
2017
Computer software / Messaging
$2,000,000
$12,500,000
“Backed by prominent early-stage investors including Index Ventures and Sam Altman; team later joined X (formerly Twitter) via acquisition”