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About

Discover, prospect, and track the world’s fastest-growing companies and investors. Automatically enrich your leads and accounts with company data from Mattermark. 80+ fields per company including geography, industry, revenue, personnel, funding, and employee growth. Identify the right contact based on title, function, and seniority. Get smarter about outreach by monitoring changes in team size, web traffic, media mentions and more. We leverage machine learning, web crawlers, primary sources, and natural language processing to extract data from millions of news articles and websites daily. Our team of in-house analysts verify the data every day - so you can close deals with conviction. The world’s business information in one place, filterable and sortable. Mattermark makes it faster and easier to source the best deals. Search company and investor profiles for deep insights into their growth and performance over time. Break the cycle of doing business without good data.

About

Sixtyfour is an AI-powered research platform that enables businesses to deploy custom agents capable of discovering, enriching, and analyzing data about people and companies in real time through a programmable API. It automates traditionally manual research workflows by sourcing information from public and proprietary data sources, extracting structured insights, and delivering them instantly for use in sales, recruiting, or strategic decision-making. Developers and teams can use the platform to enrich leads, map entire markets, and detect dynamic signals such as hiring trends, leadership changes, funding events, and technology adoption, all tailored to specific criteria. Its agents act as intelligent research assistants that continuously gather and update relevant information, allowing users to define exactly what data they need rather than relying on static datasets or generic filters.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Businesses looking to build prospect lists and enrich their leads and accounts

Audience

Sales, recruiting, and go-to-market teams who need automated, real-time intelligence to identify, enrich, and act on high-quality leads and market opportunities

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$49 per user per month
Free Version Not Supported
Free Trial Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

Mattermark
Founded: 2012
United States
mattermark.com

Company Information

Sixtyfour
Founded: 2025
United States
www.sixtyfour.ai/

Alternatives

Apollo

Apollo

Apollo.io

Alternatives

HubSpot AI

HubSpot AI

HubSpot
Clearbit

Clearbit

HubSpot

Categories

B2B Data Supported
Data Enrichment Supported
Lead Management Supported
Lead Scoring Supported
Sales Intelligence Supported
Sales Prospecting Supported

Categories

Agentic AI Supported
AI Employees Supported
AI Sales Agents Supported
B2B Data Supported
Sales Intelligence Supported

Lead Management Features

Activity Tracking Not Supported
Campaign Management Supported
Lead Capture Not Supported
Lead Distribution Not Supported
Lead Nurturing Supported
Lead Scoring Supported
Lead Segmentation Not Supported
Pipeline Management Supported
Prospecting Tools Not Supported
Source Tracking Not Supported

Integrations

Google Sheets Supported
Microsoft Excel Supported
Abacum Supported
Causal Supported
Google Chrome Supported
Lyftrondata Supported
Salesforce Supported
Stackby Supported
Unified.to Supported
Whatnot Not Supported
interviewing.io Supported

Integrations

Google Sheets Supported
Microsoft Excel Supported
Abacum Not Supported
Causal Not Supported
Google Chrome Not Supported
Lyftrondata Not Supported
Salesforce Not Supported
Stackby Not Supported
Unified.to Not Supported
Whatnot Supported
interviewing.io Not Supported
Claim Mattermark and update features and information
Claim Mattermark and update features and information
Claim Sixtyfour and update features and information
Claim Sixtyfour and update features and information