Sales & marketing

CustomerOS

Website
Founded 2021Origin source ↗Checked 2026-09-15

Overview

CustomerOS uncovers high-fit leads who are engaging directly with your brand but not yet in your sales funnel. By lead scoring your pipeline against your ICP we build data-driven profiles of your best customers and provide a real-time ICP-fit indicator so your team doesn't waste time on low-value/high-cost leads. This ensures you're spending your CAC acquiring customers who are primed to renew year after year and expand as they grow.

The Top 10% of SaaS companies generate 87% of all market returns. CustomerOS gives you the data and tooling to compete with the top 10%.

Company description As recorded 2026-11-08
LinkedIn GitHub
Sales & marketingAnalyticsBusinessesMid marketSubscription

Founders & team

Previously Openline

Company history As recorded 2026-11-08

Matt Brown

Founder

Matt Brown is a three-time entrepreneur with one successful exit. As the VP of Product at Voxbone, he launched and grew the business across 38 countries and over 900 customers. In October 2020 Voxbone was acquired by Bandwidth for $519.4 million. Matt was also the co-founder and CEO of Tengo Inc., a fintech platform serving the unbanked in ascending economies, and VP of Product at Prove, a digital identity platform trusted by 1000+ Enterprises and 500+ Financial Institutions globally.

LinkedIn X
Founder profile As recorded 2026-09-15

Vasi Coscotin

Founder

Vasi is a technical and people leader having 10+ years of experience building complex distributed systems developed and managed by distributed teams all over the globe. Vasi started in software for education sector, then tried to build a couple of startups that failed. Joined Voxbone for a 7 years jurney to scaled up the systems and the tech teams to support the accelerated growth from a start-up to a global communication network that is behind most used communication platforms.

LinkedIn X
Founder profile As recorded 2026-09-15

Jonty Knox

Founder

Founder @ CustomerOS. Jonty is a natural tech leader, after cutting his teeth closing $1B+ contracts with BT while at Huawei, he went on to build several product and tech teams in the communications space that built $100M's of value. Prior to founding CustomerOS, he exited Voxbone in a $500M+ acquisition by Bandwidth, and then set fintech startup Otto on the path to success, being selected for Sequoia Arc's first ever batch in 2022.

LinkedIn X
Founder profile As recorded 2026-09-15
10team members reported
Source-reported As recorded 2026-09-15

Founded 2021 · Source

News & product activity

Sources & observations

Y Combinator

Profile depthenriched profile
Website observationwebsite reachable
Last website check2026-11-11
Location · source statedLondon, England, United Kingdom; Remote
Pricing evidenceA pricing page was detected
Maturity: Not assessed · 4 of 6 areas documented

Source-based assessment · automated evidence rules

The source reports an inactive or acquired company; current product identity needs review.

Maturity is an evidence-based assessment, not a success rating. It may understate the current stage where evidence is limited. Coverage records documented areas, not a complete or independently audited company history.

Stage definitions
independent websitesource corroborationreachable websitedescriptive evidenceclassified market and modelsourced peoplesourced founding yearpricing page observed
startup.observe Directory coverage · Sources & method