Download of Callbox 5.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free tool was originally produced by ELTERIX.
The following versions: 5.0, 2.3 and 1.1 are the most frequently downloaded ones by the program users. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The program is categorized as Communication Tools. The most frequent installer filename for the software is: Callbox.exe. The latest version of Callbox can be installed on PCs running Windows XP/7/8/10/11, 32-bit.
From the developer:
Callbox is a new VoIP communicator, unique on the market, which allows the user to connect to telephone networks. Its principal advantages include: simplicity of operation, high quality and low cost of connections, the possibility of making calls without credit cards, as well as the lack of any formalities related to the use of this application.
You may want to check out more software, such as WinPopup Speak or ISDNphone, which might be similar to Callbox.