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AI agents

Mattermark

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.

sources
2
Evidence entries preserved.
affiliations
2
Andreessen Horowitz, 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 #799

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.

source

Andreessen Horowitz

a16z-investment-list #581
source
generated read
High Signal interpretation

Mattermark is classified as AI agents 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
automationdatacompaniesprospectshigh quality leads
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 Mattermark

AI agents · 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.

Boundo

match 92

Boundo uses generative AI to replace SDRs. Tell our platform who you're looking for, and it will find and contact high quality sales leads in a fully automated way! We’ve tuned our models to write near-human outbound sales emails with proven conversion. Best of all, we're using our own tool to do all of our sales.

shared extracted concept terms: high, quality, lead; shared product terms: re, high, quality, sale; shared product theme: sales and marketing; shared affiliation: Y Combinator

Apollo.io

match 82

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

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

Olark

match 80

Olark is easy-to-use live chat software that lets you talk to customers on your website. Olark can help you track leads, drive sales, increase conversions, and provide great customer service. Real-time visitor information like login name, geographic location, purchase history and cart contents help you personalize every interaction and strengthen customer relationships. Sign up and start making your customers happier today! Click here to sign up for a demo: https://hello.olark.com/sales

shared extracted concept terms: lead; shared product terms: sale, making, information, lets; shared product theme: sales and marketing; shared affiliation: Y Combinator

Proxis

match 76

Proxis is the AI automation platform built for enterprises. Proxis is creating AI email agents that empower brands and enterprise teams to close deals automatically. Think: your inbox, on autopilot. We initially fine tuned and distilled LLMs for enterprise use—and quickly realized that companies need more than just smarter models. They need full-stack automation. So Proxis built AI agents that handle the tedious, time-consuming work—everything from autonomous sales closers to customer service ag

shared extracted concepts: companies; shared product terms: sale, deal, automation, companie; shared product theme: workflow automation, sales and marketing; same category: AI agents; shared affiliation: Y Combinator

You Got Listings

match 69

You Got Listings is an all-in-one apartment Marketing Platform for brokerages and management companies. Founded in 2009, You Got Listings through innovation and automation has helped push over 3 Million properties in front of prospect renters. We are here to provide the rentals industry with the most comprehensive online marketing solution.

shared extracted concept terms: automation, prospect; shared product terms: automation, comprehensive, companie, over; shared product theme: workflow automation; same category: AI agents; shared affiliation: Y Combinator

Seva

match 24

a smarter way to discover and organize information at work

shared product terms: discover, organize, information