CALLSTR

callstr.com

Berlin, Berlin, Germany

1-10 employees

LinkedIn Profile

About CALLSTR

software development, real-time communication, live video chat, video call solution, customer support, computer systems design and related services, product evangelist, customer journey, no download, spontaneous contact, live sales, personal advice, sales support, online sales experience, information technology and services, personalized consultation, b2b, software as a service (saas), healthcare, customer experience

CALLSTR's Tech Stack

10 technologies detected · 1 decision maker · Emails available

Sales Outreach Angle

WordPress as a CMS signals a content-driven or SMB digital presence. SEO tools, hosting solutions, and page-builder plugins are natural fits for outreach.

CALLSTR's Position in the StackWho Database

• CALLSTR 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).
• 5,207 companies in Berlin are in the StackWho database.
• 97,391 information technology & services companies are in the 1-10 employee range (same size as CALLSTR).

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

Frequently Asked Questions

What technology does CALLSTR use?

CALLSTR uses Apache, Facebook Widget, Google Font API, Bootstrap Framework, Facebook Custom Audiences, Google Tag Manager, and 4 more technologies. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at CALLSTR?

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

What industry is CALLSTR in?

CALLSTR operates in the information technology & services industry, headquartered in Berlin, Berlin, Germany. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export CALLSTR's contact data?

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