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Companies using Unstack

As of 14 October 2026, Firmable tracks 70 companies across 13 countries running Unstack. See who they are, and who to call.

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Companies using Unstack

Showing 5 of 70 companies

Competitive Energy Services

competitive-energy.com · Environmental consulting services · 51–250 employees · 1 web property observed

Last seen 21 Jul 2026 The most recent date Firmable detected Unstack at this company.

Decision makers · 17 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Technical Director, Information Systems MobileEmail
Director of Sustainability & Renewables MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

No signals recorded

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taxdome

taxdome.com · Computer software · 251–500 employees · 1 web property observed

Last seen 29 Sep 2026 The most recent date Firmable detected Unstack at this company.

Decision makers · 23 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Chief Technology Officer MobileEmail
Vice President of Sales MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

TaxDome announces the launch of in-office client payments integration for its practice management platform. · 8 Oct 2026

TaxDome announces its upcoming Dallas Roadshow event scheduled for October 20, 2026. · 7 Oct 2026

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United Airlines

united.com · Aviation and air transport · 10,001+ employees · 1 web property observed

Last seen 29 Sep 2026 The most recent date Firmable detected Unstack at this company.

Decision makers · 9.2K+ on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Engineering Manager MobileEmail
Senior Manager - Onboard Tools & Technology MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Hired as chief communications officer · 31 Jul 2026

United invested into assets: maintenance facility in the amount of $200M in Texas, United States, Northern America, Americas on Sep 14th '26. · 14 Sep 2026

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Pet Pocketbook Inc.

petpocketbook.com · Computer software · 11–50 employees

Last seen 20 Jul 2026 The most recent date Firmable detected Unstack at this company.

Decision makers · 7 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Chief Technology Officer MobileEmail
Founder MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

Pet Pocketbook, Inc. partnered with Stripe, Inc. on Jul 31st '26. · 31 Jul 2026

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REA Group

rea-group.com · Internet services and web portals · 1,001–5,000 employees · 1 web property observed

Last seen 30 Sep 2026 The most recent date Firmable detected Unstack at this company.

Decision makers · 823 on file Senior people on file at this company. Firmable holds their names, emails and mobiles.

Head of Engineering MobileEmail
Senior Manager, Design MobileEmail

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Signals Recent events at this company, such as a leadership change, funding or a new office.

New Chief AI Officer joined · 31 Aug 2026

New Account Partner appointed · 31 Aug 2026

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Who uses Unstack

A breakdown of the 70 companies running Unstack.

Top industries

Information technology and services24
Professional and business services11
Art, sports and recreation6
Health and wellness6
Construction and building4
Financial services3
Industrial and manufacturing3
Hospitality and travel2

No industry recorded: 8

Company size

1–1024 (49%)
11–5014 (29%)
51–2504 (8%)
251–5003 (6%)
501–1,0001 (2%)
1,001–5,0002 (4%)
10,001+1 (2%)

Share of companies with a recorded size, by employees.

No size recorded: 21

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Frequently asked questions

About the Unstack data on this page.

How many companies use Unstack?

Firmable holds confirmed Unstack detections for 70 distinct companies, 43 of them confirmed in the last 90 days. A company is counted once however many of its properties run it.

Which companies use Unstack?

Competitive Energy Services, taxdome and REA Group are among the most prominent in the current set.

What industries use Unstack?

Information technology and services, professional and business services and art, sports and recreation lead the set, across 17 industries in total.

What size companies use Unstack?

Adoption concentrates in the 1-10 employee band, across the companies whose size is recorded.

Where are Unstack users based?

The United States, Canada, Australia and the Philippines account for most detections, across 13 countries.

How current is this data?

43 companies were confirmed in the last 90 days. Last detection 30 September 2026.

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