back to company universe
Developer tools

Apollo.io

Founded in 2015, Apollo.io is a lead intelligence and sales engagement platform trusted by nearly 9,000 paying customers, from rapidly growing startups to some of the largest global enterprises. Our community-based approach to crowdsourcing data gives users maximum coverage while ensuring data accuracy. Our advanced algorithms and unique data acquisition methods help over 500,000 sales professionals enrich and analyze prospects' data to increase quality conversations and opportunities. We have n

sources
1
Evidence entries preserved.
affiliations
1
Y Combinator
competitors
6
Mapped from High Signal graph features.
status
generated
D1 lookup
last updated
2026-07-15
16:41 UTC
source evidence
Why this company exists here

Y Combinator

yc-company-directory #3661

Founded in 2015, Apollo.io is a lead intelligence and sales engagement platform trusted by nearly 9,000 paying customers, from rapidly growing startups to some of the largest global enterprises. Our community-based approach to crowdsourcing data gives users maximum coverage while ensuring data accuracy. Our advanced algorithms and unique data acquisition methods help over 500,000 sales professionals enrich and analyze prospects' data to increase quality conversations and opportunities. We have n

source
generated read
High Signal interpretation

Apollo.io is classified as Developer tools from source descriptions and fund-directory context. Similar companies below are ranked from offline product facets and meaningful description overlap; category and source affiliation can only strengthen an existing product match. For lookup-created rows, the profile starts as pending enrichment until deeper source collection runs.

offline extraction
Product facets
paying customersprospectsadvanced algorithmsunique data acquisition methodsglobal enterprisesrapidly growing startupscommunity-based approach to crowdsourcing data
mapping method
Similarity graph

Local clusters rerank extracted product concepts and description terms. The generated graph remains the fallback for sparse descriptions: offline reciprocal product-similarity graph: extracted concepts + description terms + bounded category/affiliation boosts. Minimum fallback score: 0; max competitors: 6.

discovery cluster

Companies similar to Apollo.io

Developer tools · 6 peers

A deterministic local cluster built from offline product facets and meaningful description terms. Category and selected-institution affiliation provide bounded tie-breaks. Open any peer to continue exploring its cluster.

PagerDuty

match 108

PagerDuty is an operations performance platform delivering visibility and actionable intelligence across the entire incident lifecycle. Their SaaS-based solution empowers over 10,000 small, mid-size and enterprise global customers such as Comcast, eHarmony, Slack and Lululemon with the insight to intelligently respond to critical disruptions for exceptional customer experience. PagerDuty was founded to deliver a new and innovative approach to increase business response and efficiency. When brand

shared extracted concept terms: customer, global, enterprise; shared product terms: found, intelligence, 000, customer; shared product theme: sales and marketing; shared affiliation: Y Combinator

Mattermark

match 82

At Mattermark, we’re accelerating sales and deal making through data and automation. Mattermark collects and organizes comprehensive information on the world’s fastest growing companies. In minutes, get actionable data that lets you pinpoint the companies and people you need to know or do business with. Today, over 500 companies use Mattermark to discover high quality leads, prioritize prospects and increase conversion rates.

shared extracted concepts: prospects; shared product terms: lead, sale, grow, over; shared product theme: sales and marketing; shared affiliation: Y Combinator

Veriff

match 80

Veriff is a global online identity verification company that enables organizations to build trust with their customers through intelligent, accurate, and automated online IDV. Veriff’s intelligent decision engine can analyze thousands of technological and behavioral variables in seconds, matching people to more than 10,000 government-issued IDs from over 190 countries. Veriff serves a global portfolio of organizations across fintech, crypto, and mobility sectors. Founded in 2015 by Kaarel Kotkas

shared extracted concept terms: customer; shared product terms: found, 2015, trust, 000; shared product theme: sales and marketing; shared affiliation: Y Combinator

SFOX

match 78

SFOX, a YC-backed company, makes it easy for enterprises to trade bitcoin. We started with an advanced trading platform that uses algorithms to provide a competitive advantage to our customers. SFOX now aims to expand international commerce by making it easy to trade any currency and settle in real time.

shared extracted concept terms: customer, advanc, algorithm, enterprise; shared product terms: customer, enterprise, advanc, algorithm; shared product theme: sales and marketing; shared affiliation: Y Combinator

Promptless

match 76

Docs are integral to a great customer experience, but managing them is a challenging, multi-team effort. The most successful companies recognize that fantastic docs drive adoption and bad ones cause customers to churn. Promptless is used by fast-growing startups and Fortune 500 enterprises alike to automatically update docs based on feature releases, support tickets, internal Slack conversations, and more. Promptless is designed to be flexible—it can integrate with any docs platform, be triggere

shared extracted concept terms: customer, enterprise, grow; shared product terms: customer, grow, enterprise, 500; shared product theme: sales and marketing; shared affiliation: Y Combinator

Kimba

match 47

Kimba helps enhance customer's sleep quality by using AI to analyze biometric data while they sleep to diffuse personalized scent therapy from its custom hardware.

shared extracted concept terms: customer; shared product terms: customer, quality, analyze, while; shared product theme: sales and marketing