What technologies does Callo use?

Callo uses NSOne, Gmail, Google Apps, Amazon AWS, Google Tag Manager. View their full technology stack — including all 9 detected tools — on StackWho.

Who is the Founder + CEO of Callo?

Fassa Sar is the Founder + CEO at Callo. Get verified contact information on StackWho.

Where is Callo located?

Callo is based in Los Angeles, California, United States.

Callo

wearecallo.com

information technology & services

wearecallo.com

Los Angeles, California, United States

11-50 employees

LinkedIn Profile

About Callo

consumer internet, entertainment, creator economy, film, television, creator platform, technology, information & internet, media & entertainment, content creation & collaboration, fast payments, project management, industry connections, task tracking, b2b, agreement automation, global creative network, media development, agreement management, media production

Callo's Tech Stack

Decision Makers at Callo

1 contact

Fassa Sar

Founder + CEO

f***@wearecallo.com Sign up to view

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9 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

AWS infrastructure signals engineering sophistication. This company likely evaluates cloud cost management, security tooling, observability, and developer productivity solutions.

Callo's Position in the StackWho Database

• Callo is 1 of 194,140 information technology & services companies tracked in StackWho.
• 193,618 information technology & services companies in our database have verified decision-maker emails (100% of the cohort).
• 53,147 companies in California are in the StackWho database.
• 74,148 information technology & services companies are in the 11-50 employee range (same size as Callo).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Callo use?

Callo uses NSOne, Gmail, Google Apps, Amazon AWS, Google Tag Manager, Mobile Friendly, and 3 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Callo?

StackWho has verified email addresses for 1 decision maker at Callo. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Callo directly for sales, recruiting, or partnerships.

What industry is Callo in?

Callo operates in the information technology & services industry, headquartered in Los Angeles, California, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Callo's contact data?

Yes. StackWho Pro members can export decision maker contact data for Callo and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.