Total Equity Funding
$2.73M in 3 Rounds from 3 Investors
Most Recent Funding
$2M Series A on August 5, 2010
Werl, Nordrhein-Westfalen
C2Call develops mobile and browser-based voice and video calling solutions for the computing cloud.
VoIP, Messaging, Mobile

Company Details


About C2Call GmbH leads the way in introducing next generation mobile and browser-based calling solutions for the computing cloud. FriendCaller for iOS and Android are built using C2Call SDK, and demonstrate the unique capabilities to establish a peer-to-peer connection with any mobile platform and with any Internet browser without prerequisite software installations. With the new C2Call SDK, developers would now be able to integrate features alike FriendCaller in their existing or new apps on mobile.

How it began As the founders and architects of Actai Networks (Singapore, Germany and Taiwan) a mobile Internet solutions development company, Martin Feuerhahn and Michael Knecht experienced firsthand the diversified environments in terms of operating systems, standards, languages and regional preferences while traveling and communicating with customers worldwide. All existing VoIP solutions were closed user group systems and required users to install software, register and exchange ID before a call was possible.

A Striking Idea Feuerhahn and Knecht decided to create a solution that initiates instantly in any popular browser overcoming all the obstacles which the existing VoIP technologies were up against – including the requirements for both call parties to register and exchange IDs.

C2Call is the result:

This simple-to-use click-to-call VoIP technology works across diversified environments such as Windows, Mac and Linux, yet easily spans foreign languages and standards globally – with no software or hardware installation required prior to use. Unlike installed clients that easily take upto 50 to 75MB of memory, C2Call does not “hog” memory. C2Call packs the VoIP functionality in a small, temporary 750kb Java applet.

FriendCaller.com, powered by C2Call In February 2009, less than one year after start up, the C2Call-powered FriendCaller.com website was released to demonstrate C2Call’s unique capabilities in the Social Networking Space, offering a 100 percent web-based alternative to installed VoIP services such as Skype, MSN, AIM and others.

FriendCaller can be used to call other FriendCaller users but breaks the “closed system” open with the patent pending Callme links. Callme links connect instantly to anyone on the Internet, whether he or she is a FriendCaller user or not. Callme links can be sent via email, instant message or can be placed on social media profiles and blogs, starting in any popular browser.

FriendCaller App for iOS The FriendCaller apps for iOS (iPhone, iPod touch and iPad) prove that the original Java-based C2Call technology can be easily ported to other platforms. FriendCaller app for iOS turns the iPhone in a full-fledged WiFi/3G Video VoIP phone. Since the iPhone iOS does not support Java, a native client was developed with the same capabilities of sending universal instant CallMe links that can be opened by any PC browser. The Apple-approved FriendCaller iPhone app can be downloaded on iTunes and works with the original iPhone, iPhone 3G, iPhone 3Gs, iPod touch and iPad (1st and 2nd generation). FriendCaller Video Chat is best suited for iPhone4, iOS 5 or later. After successful and clean results of video calling seen on larger retina display of iPhone 5 and iPod touch, C2Call has recently introduced HD video chat for the new iPad as well.

Making 7- way video calling experience ultimately sublime for its users in HD!

Comparing C2Call with Skype, AIM, QQ, etc.: The developers of C2Call have created a sensational, unique new product that transcends current VoIP technologies such as Skype, AIM and all others. These services operate only in a “closed system” mode, where communicating parties must install the same software, then exchange user IDs prior to making a connection and speaking. The closed system can never be an “instant” connection. C2Call is an “open” system that instantly provides peer-to-peer communication due to its capability to send the Callme links.

Calling Out to the World The FriendCaller website and iPhone users can add call credits to their accounts and call out to the telephone networks of more than 400 countries and territories worldwide. Most phone numbers in popular destinations in North America, Europe and Asia can be called for only 2 cents per minute. Calls are charged by the minute, and no additional “connection fee” or “call set-up fees” apply.

Ready to Grow The FriendCaller website and all call servers are hosted on Amazon Web services. This cloud computing setup allows full scalability for growth as well as for business applications and support thousands of apps, not only FriendCaller.

SDK launched With the launch of our SDK for mobile app developers, C2Call is providing access to the “one-click” video calling, voice and messaging functionality, which was only previously available through FriendCaller. By integrating C2Call’s technology into their mobile apps, developers will now be able to have their users communicate across multiple apps, on different platforms using rich communication functionalities.

Bottom-line advantage

Instant calling – worldwide! It doesn’t matter what VoIP software or browser a user has – or if there is any software at all! Users simply click on the link in the email signature of the person requesting a call. Without any software installation , C2Call provides VoIP to begin an instant connection in a browser.

Investors C2Call GmbH was funded in April 2008 by Martin Feuerhahn and Michael Knecht. One month later it received already international angel funding. Its group of angel investors includes Michael Brehm, former executive director of StudiVZ , Europe’s largest social networking site and Tapesh Sinha, Founder of Acctel Group of companies. In October 2009 the High-Tech Gründerfonds became the lead investor. The High-Tech Gründerfonds is Germany leading start-up venture capital group and is itself backed by six of Germany's largest industrial groups including BASF, Deutsche Telekom, Siemens, Robert Bosch, Daimler and Carl Zeiss. Visit the C2Call / FriendCaller Web site at: www.friendcaller.com for more information.

COST: 2 cents/minute = 80-90 percent less than regular calling rates.

C2Call is a German-based peer-to-peer VoIP service provider, which powers the popular FriendCaller www.friendcaller.com website. Offering easy-to-use, cost-effective VoIP calling, FriendCaller allows users to instantly connect over the Internet through the company’s patented Callme links. FriendCaller is the first VoIP service available currently that does not require prior software installation, registration or ID exchanges by users.

For more information please contact:

Martin Feuerhahn, CEO, C2Call Email: [email protected] C2Call GmbH, Werl, Germany or visit: www.C2Call.com or www.FriendCaller.com

Funding Rounds (3) - $2.73M

DateAmount / RoundValuationLead InvestorInvestors
Aug, 2010$2M / Series A3
Sep, 2009€250k / Seed1
Jan, 2008€250k / Angel0

Current Team (1)


Board Members and Advisors (1)


Products (5)

  • C2Call SDK was added to CrunchBase in 2013
  • eBento was added to CrunchBase in 2013
  • FreePhone was added to CrunchBase in 2013
  • FriendCaller was added to CrunchBase in 2013
  • Photo SMS was added to CrunchBase in 2013

News (2)

Aug 5, 2010TechCrunch (EU) - C2Call GmbH raises 2000000 in venture round
Jan 23, 2010Business Wire - C2Call GmbH raises 357850 in seed round

Offices/Locations (1)

  • C2Call GmbH

    Lüenbrink 25

    Werl, Nordrhein-Westfalen 59457


Past Team (1)


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