Top Companies using
Substack
Discover top companies adopting Substack and access decision makers to create a qualified prospecting list in minutes.
See all Top Companies NowLast updated on June 19, 2026.
Top Companies using Substack
| Company | Location | Employees | Industry | |
|---|---|---|---|---|
|
2201 C St., NW, Washington, DC, 20520, US |
10,001+ employees |
International Affairs |
See all employees | |
|
Group Head Office, 50 Featherstone Street, GB |
1,001-5,000 employees |
Computer Software |
See all employees | |
|
PO BOX 95, HO1, KW |
1,001-5,000 employees |
Banking |
See all employees | |
|
Commercial Bank Plaza, P.O.Box: 3232, QA |
1,001-5,000 employees |
Banking |
See all employees | |
|
Latinoamérica , CL |
51-200 employees |
Higher Education |
See all employees | |
|
Novo Holdings A/S, Tuborg Havnevej 19, DK |
51-200 employees |
Financial Services |
See all employees | |
|
2 Arundel Street, London, WC2R 3DA, GB |
51-200 employees |
Computer Software |
See all employees | |
|
Washington, DC, US |
10,001+ employees |
Law Enforcement |
See all employees | |
|
Rua Ernesto Alves, 150, Porto Alegre, RS, 90220-190, BR |
501-1,000 employees |
Higher Education |
See all employees | |
|
4000 Arlington Blvd, Arlington, Virginia, 22204-1586, US |
501-1,000 employees |
International Affairs |
See all employees | |
|
U.S. Department of State, Washington, DC, 20037, US |
501-1,000 employees |
Higher Education |
See all employees | |
|
Beit Al Tijjar, Manama, 18131, BH |
201-500 employees |
Government Administration |
See all employees | |
|
Washington , District of Columbia, 20520, US |
1,001-5,000 employees |
International Affairs |
See all employees | |
|
1510 Fashion Island Blvd, Suite 100, US |
501-1,000 employees |
Computer Software |
See all employees | |
|
São Paulo, BR |
11-50 employees |
Venture Capital & Private Equity |
See all employees |
Technology alternatives and competitors
Kotlin 3
Redis Cluster
Magento Headless
Netlify (Us-East) Plugin
Weaviate Module
Kubernetes Enterprise Module
Rollup 2025 Connector
Scikit-Learn V1 Extension
Angular 2025 Plugin
Rocket (Rust) V3 Integration
Redis Streams Stream Integration
Microsoft Sql Server Cloud Connector
Additional top technologies list
Top companies using Domain CN
Top companies using Blue Sky Chat
Top companies using LineDay
Top companies using Assoconnect
Frequently Asked Questions about Substack
What is Substack?
Discover top companies adopting Substack and access decision makers to create a qualified prospecting list in minutes. Download a FREE sample list of decision makers
How many companies use Substack?
Currently, 150 companies use Substack. This includes enterprises and SaaS businesses across multiple industries. Download the FREE sample list
Which companies use Substack?
Major organizations like U.S. Department of State, YouGov, National Bank of Kuwait, Commercial Bank, and Laboratoria use Substack. Browse the complete company list above for direct access to decision makers.
Which industries use Substack most?
Industries that rely heavily on Substack include Business Services, Custom Software & IT Services, and Enterprise Software.
What are the best alternatives to Substack?
Companies often compare Substack with Microsoft Azure, Okta, CyberArk, and OpenID Connect.
How often is this data updated?
ContactOut dataset is refreshed every 10 days to ensure you access the latest companies and verified decision makers. Sign up for a free account to access the latest data.
Find your ideal prospects with precision
Trusted by 1.4M
recruiters and sales reps
from Fortune 500 companies
“ContactOut makes getting contact information from people's LinkedIn profiles a breeze. I have been able to get in contact with people relevant to my business that I otherwise would not have been able to.”
Jacob Ostler
Sales Team Lead at Clientbook
“ContactOut is the best tool out there in terms of accuracy and frequency of contact information found. I've managed to get in touch with people that I wouldn't have been able to which is crucial for my job.”
Teddy Albert
Account Manager at AlphaSights
“With ContactOut, it's made my life incredibly easier to do my job on a daily basis to get in touch with those tough to reach people with the correct emails, the right domain, and even the right phone numbers.”
Clayton Smith
Billing Manager at Venturi Ltd
“For us, this is it. We’ve got to use ContactOut.
ContactOut helps us connect with people I am not currently connected to but need their contact info rather quickly. It helps you do your job correctly and more efficiently.”
Brian Hathway
Vice President of Business Development at BDEX
Won New Big Clients
such as Amazon, Estee Lauder & Citibank
2x Sales Outputs
With increased speed & accuracy in prospecting
More Sales Closed
within weeks from first contact
Get quality leads,
close more calls
with ContactOut
Reach the right decision makers, optimize your sales process, and grow your revenues, faster.
