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Top 18 SaaS Companies in Fairfax, United States, May 2026

As of May 2026, there are 18 SaaS companies based in Fairfax. They have combined revenues of $591.5M and employ 4.7K employees. They've raised $65.9M in capital and serve 30M customers combined.

Companies
18
Revenue
$591.5M
Funding
$65.9M
Employees
4.7K

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Top SaaS Companies in Fairfax

Showing 10 of 4 companies ranked by annual revenue.

1
Alesig Consulting

Fairfax, Virginia, United States

Company providing IT services and products for federal, state and local governments, focusing on innovation and collaboration in the development

Revenue
$8.4M
Customers
-
Year founded
2007
Funding
-
Team size
67
Growth
-
2
Miklos Systems, Inc.

Fairfax, Virginia, United States

Miklos Systems is an IT company specializing in network engineering services.

Revenue
$7.4M
Customers
-
Year founded
1993
Funding
-
Team size
36
Growth
84.19%
3
Siber Systems

Fairfax, Virginia, United States

Our mission is to give individuals and companies the power to safely and conveniently access and manage their data. We are a privately-held company, headquartered in Fairfax, Virginia. Our flagship products, RoboForm and GoodSync, are used by millions of people worldwide. Our customers range from individual users and small businesses, to government agencies and leading Fortune 500 companies. RoboForm alleviates the burdens associated with password management by remembering and generating passwords, automatically logging into websites, and even completing long online checkout forms with a single click. Released in 2000, RoboForm has been translated into 30 different languages. GoodSync, a reliable and robust automatic file synchronization program was released in 2006 and continues to receive favorable reviews from users and the press.

Revenue
$7.3M
Customers
-
Year founded
1995
Funding
-
Team size
66
Growth
-
4
SYNAPSE BUSINESS SYSTEMS

FAIRFAX, Virginia, United States

Consulting company providing IT solutions, particularly digital transformation and modernization, cloud solutions, DevSecOps and more, to government and commercial clients

Revenue
$5M
Customers
-
Year founded
2013
Funding
-
Team size
37
Growth
-