Call Center Companies

Connect with vetted agencies that deliver qualified leads and measurable ROI. Compare detailed reviews, case studies, and pricing.

Free comparison of 5 matched providers

Image ALT

All Call Center Agencies

Performance Heroes Online GmbH logo

Performance Heroes Online GmbH

Verified

True heroes always have a mission!

We are experts in acquiring new B2C customers digitally via email marketing. For over 10 years, we have been among the leading providers in the email marketing industry, helping our clients acquire a reliable number of new customers every month. We offer you the design (HTML + text), planning, management, and optimization of your new customer campaign. Together, we will achieve your goals.

See more...
4.8 (9 review)
13 employees
Hamburg, Germany
Visit Website
Oxeltech GmbH logo

Oxeltech GmbH

Verified

Get Your Embedded and Electronic Systems Developed by Experts

Oxeltech develops electronics hardware and embedded software solutions. Especially within consumer electronics, IoT, wearable, medical devices and e‑mobility domains. Oxeltech has brought over 20 hardware products from concept through certification to production and market launch.

Core Services:

Hardware Design(schematic capture, analog/digital circuit design and simulation, PCB Layout & Assembly)

Firmware & Embedded Software Development (C, C++, RTOS, STM32, Zephyr, Nordic nRF, ESP32 and more)

Low‑Power, Battery‑Operated Devices (IoT, wearables, medical)

Wireless Connectivity: Bluetooth Low Energy (BLE), Wi-Fi, NB-IoT, LTE-M, LoRa, LoRaWAN, Zigbee, Thread, Sub-GHz ISM, RFID, MQTT, OTA updates.

Standards & Compliance: CE, FCC, UL, ISO 26262, IEC 61508, MIL‑STD, MISRA‑C, EMI/EMC

See more...
1.0 (0 review)
10 employees
Berlin, Germany
Visit Website
advalyze GmbH logo

advalyze GmbH

Verified

Don't do what you can't measure

We always keep your end customer's customer journey in mind.

From the first advertising contact through a landing experience, possible lead generation, lead management, marketing automation, CRM down to ERP or e-commerce. We are regularly in digital lead and accompany your end customer from marketing through sales to aftersales or retention. We do this from both a marketing perspective (media buying, media planning, advertising materials, target groups, content) and from a technological perspective (marketing automation, CRM implementation, data analytics, tool selection and implementation, website support). With marketing and marketing technology, we bring together precisely the two areas needed to be successful digitally.

-----------

Growth Marketing:

With Growth Marketing, we elevate your marketing to the level of a digital leader. The right communication at all relevant touchpoints in the customer journey can help you scale and increase revenue in the long term. Here, we data-drivenly optimize your entire marketing funnel: from the first digital contact through leads and lead generation to conversion and retention.

-----------

MarTech:

Data-driven customer journey communication is only possible with the right marketing technology stack. Here, we support you in selecting and implementing the appropriate tools to make your data available to you. Instead of relying on in-house development, we connect existing systems via middleware and APIs. This is a faster and cheaper alternative. Simple lean startup!

See more...
1.0 (0 review)
20 employees
Berlin, Germany
Visit Website
tolingo logo

tolingo

Professional translation agency ✓ personal service ✓ fast delivery ✓ ISO certified ✓ from 0.06 €/word ✓ all world languages ✓
1.0 (0 review)
111 employees
Hamburg, Germany
Visit Website
The best Call Center Companies