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Dex

YC S19

San Francisco, US · Founded 2019 · 7 employees · 8 known investors

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Dex is a relationship management tool that provides an intuitive, modern rolodex for organizing and maintaining personal and professional contacts. It eliminates manual data entry and tedious processes, designed as a lightweight alternative to spreadsheets and sales CRMs.

Also known as Dana HQ Inc · Dana · Dana, Dex, Dex (was Dana) · Dex (was Dana)

ConsumerSaaSProductivityCRMUnited States of AmericaAmerica / CanadaFully Remote

Founders & leadership· Y Combinator alumni (S19)

Dex was founded in 2019 by Kevin Sun.

KSKevin Sun
Kevin SunFounder at Dex (YC S19)
HU
Harry UglowFounder
KGKevin Gu
Kevin GuFounder
LP
Lambros PetrouFounder
PL
Paddy LambrosFounder
RLRegina Lin
Regina LinFounder
OC
Omar CruzFounding Software Engineer
AN
Aidan NiswenderHead of Marketing
SB
Stephanie BayerRecruiter
KD
Kasi DongaSenior Software Engineer
JS
Jai SoniSenior Software Engineer
JJack
JackFounding Engineer

Investors · 8

Concept Ventureslisted by Concept VenturesLondon · $1.5M

How we know: Concept Ventures's portfolio page · funding news · fortune.com · open dataset · 5k.vc investor directory · Not right? Tell us

Y Combinatorlisted by Y CombinatorSan Francisco · $500K

How we know: the Y Combinator directory · open dataset · 5k.vc investor directory · Not right? Tell us

A16Z SpeedrunreportedSan Francisco · $1M

How we know: fortune.com · Not right? Tell us

Employee Stock Option FundreportedSan Mateo

How we know: Y Combinator's founder network · Not right? Tell us

Notion CapitalreportedLondon · $1M – $100M

How we know: funding news · fortune.com · open dataset · 5k.vc investor directory · Not right? Tell us

Tapas CapitalreportedBellevue

How we know: Y Combinator's founder network · Not right? Tell us

Trung Nguyenreported

How we know: Y Combinator's founder network · Not right? Tell us

Funding

SEC filings, press & company announcements

$5.3M disclosed across 1 of 2 rounds · 2025–2026

Source: company announcements and press reports — follow each round's link for the claim.

Founder mafia

2 people who came through Dex went on to found or lead other companies.

Regina LinFounderFounded ThirdlayerKevin GuFounderFounded Thirdlayer

Related companies · 10

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ZapierZapier provides a platform for connecting AI models and agents to workflows and business applications, enabling teams to automate tasks across over 9,000 apps without coding. The platform serves enterprises, operations teams, and businesses of all sizes looking to deploy AI-driven automation for lead capture, customer support, employee onboarding, and other business processes.
RelateRelate is a customer data platform and CRM designed for B2B SaaS startups to manage leads, sales pipeline, customer health, and renewals in a single interface. It integrates with common business tools and provides sales and customer success teams with essential features for deal tracking and customer engagement.
folkfolk is a CRM that captures relationship context and uses AI assistants to automate sales busywork like follow-ups, relationship recaps, company research, and email outreach workflows. It serves sales and business development teams managing deals and contacts.
TwentyTwenty is a customizable CRM platform and internal application framework for technical teams. It provides a low-code/no-code toolkit allowing developers to build and adapt CRM systems without vendor lock-in, offering real-time collaboration features and API-accessible integrations.
Harvard Business Review’s (HBR)Harvard Business Publishing is a not-for-profit affiliate of Harvard Business School that develops and distributes business education content, leadership development solutions, and management thought leadership through publications, digital platforms, and events. The organization serves academic institutions, corporations, and individual managers across three primary market segments.
HiveHive provides marketing and event management software for live event promoters, helping clients send over 2.5 billion emails annually.
LayloLaylo is a platform that consolidates email, SMS, and social messaging tools for musicians, artists, and creators to manage fan engagement and sell tickets, merchandise, and content. The service enables artists and creators to build fan lists, send targeted notifications, and track sales across multiple distribution channels.
StreakStreak is a CRM built directly into Gmail that helps recruiters, fundraisers, sales representatives, and business operators manage customer relationships and workflows without leaving their inbox. The company offers email tracking, task management, pipeline customization, and mail merge features designed for teams already using Gmail.

Companies working in the same space as Dex.

Legal entities · 1

corporate structure
Dana HQ Inc

Frequently asked questions

What does Dex do?
Dex is a relationship management tool that provides an intuitive, modern rolodex for organizing and maintaining personal and professional contacts. It eliminates manual data entry and tedious processes, designed as a lightweight alternative to spreadsheets and sales CRMs.
Who founded Dex?
Dex was founded by Kevin Sun in 2019.
Who are Dex's investors?
Dex's investors include Amino Capital, Concept Ventures, Y Combinator, A16Z Speedrun, Employee Stock Option Fund, Notion Capital, Tapas Capital, Trung Nguyen.
How much funding has Dex raised?
Dex has disclosed $5.3M raised across 1 of its 2 known rounds.
Where is Dex headquartered?
Dex is headquartered in San Francisco, US.