Communication software is used to provide or facilitate remote access to computer systems, or to pass information from one computer system to another.
Common examples of communication software are messaging software, email, and file transfer protocol (FTP) systems, and terminal emulators.
The term is generally reserved for communications between one computer and another, and not to communications software powering telephone systems (telecommunications), radio communication, or other types of communications involving a computer and a device other than another computer.
Voice over Internet Protocol (VOIP) is a type of communication software, as well, although companies providing VOIP services are listed in the VOIP subcategory of the Technology category, in the Business & Industry tree.
The focus of this category is on communication software, as defined above.
 
 
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Various types of communication software are featured in this communication directory, including email, wireless software, broadcast and telephony software, Internet communication software, instant communication software, voicemail, messaging software, mass communication tools and utilities, software for paging, and applications related to SMS messaging. Descriptions of listed software are presented, partners are highlighted, featured applications and accessories are included.
http://www.communication-software.com/
Originally an acronym for Common UNIX Printing System, CUPS was developed by Easy Software Products for use in Unix-like operating systems, and currently owned by Apple, to allow a computer to act as a print server. A computer running CUPS is a host and can accept print jobs from client computers, process them, and send them to the appropriate printer. Licensed under the terms of the Apache License, it may be downloaded from the GitHub repository.
https://www.cups.org/
Available for the macOS and Windows platforms, the keylogger is used to monitor computer activity, logging keystrokes. This can help parents protect their children online, act as a hidden surveillance cam and, in a business environment, it can ensure employee efficiency. A free and professional Mac version is available, while its Windows product is available in a free trial or as a commercial product. Its features are highlighted, and documentation, a knowledgebase, and a FAQ are included.
https://www.elitekeyloggers.com/
Converting emails to high-quality voice messages and delivered to a specified phone number, Email2Phone allows users to receive email over the phone. Users can dial in, using any phone line, to receive their messages, and they may also replay through the Email2Phone system. Its features and advantages are highlighted here, along with case studies, white papers, and answers to frequently asked questions (FAQ), as well as its pricing plans and options.
https://www.email2phone.net/
Hosted on SourceForge, FileZilla is a free, cross-platform FTP application that includes FileZilla Client and FileZilla Server, although server binaries are available for Windows only. Available under the terms of the GNU General Public License, FileZilla may be downloaded from the site. Its features are highlighted, along with screenshots, documentation, and a community support forum and wiki. Other documentation includes its source code, translations, and version history.
https://filezilla-project.org/
Licensed under the free and open-source GNU General Public License, Wammu is a program designed for the management of data on a cell phone, such as contacts, calendar, and messages, while Gammu SMSD is a service used to send and receive SMS messages, and both a built on top of the Gammu library, which is compatible with Nokia, Sony-Ericsson, Motorola, Samsung, Siemens, Huawei, and other cellphone vendors. The programs and related files may be downloaded.
https://wammu.eu/
Designed to be easy to use, small, and able to be compiled on several Unix-type operating systems, GtkLP is a graphical front-end to CUPS, the Common UNIX Printing System, offering graphical access all of the several options available in CUPS-managed printers. Included in the package is GtkLPQ, a graphical front-end for CUPS-Print queues. Its features are listed, along with a list of languages, and the extent to which specific languages are supported. Documentation is included.
https://gtklp.sirtobi.com/
ICQ is a cross-platform instant messaging and VoIP client, supporting macOS, Windows, Linux, iOS, Android, and web browsers. Originating in Israel in 1996, it was bought by AOL in 1998, and by a Russian group in 2010. ICQ includes offline user messaging, multi-user chats, free SMS sending, resumable file transfers, multiplayer video games, and a searchable user directory. Users may recover forgotten passwords by email, ICQ number, or mobile number.
https://icq.com/
Cloud-based, the platform offers omnichannel routing, workforce automation, analytics, automation, and artificial intelligence, its chief products include Cloud Call Center software, Automatic Call Distribution, Interactive Voice Response, Workforce Optimization, Workforce Management, and Customer Satisfaction Surveys, each of which are highlighted here, along with an overview of its approach, career opportunities, press information, and a blog.
https://www.niceincontact.com/
Secure Internet Live Conferencing (SILC) is a protocol that provides synchronous conferencing services over the Internet. There are two parts to the SILC protocol: SILC key exchange, SILC authentication protocol, and SILC packet protocol. It provides encrypted and authenticated transport, private messages, and group messages, as well as secure video and audio conferencing, image and sound messages, and off-the-record or on-the-record conversation with or without digital signatures.
http://www.silcnet.org/
Produced by Slack Technologies, Slack is a cloud-based proprietary instant messaging platform designed to replace email within a company, which includes several IRC-like features, including persistent chat rooms (called channels), organized by topic, private groups, and direct messaging. It allows communities, groups, and teams to join a workspace through a specific URL or invitation sent by a team administrator or owner. A free version is available, along with two monthly subscription options.
https://slack.com/
Available under the terms of the GNU Lesser General Public Library License, Sofia-SIP is an open-source session initiation protocol (SIP), which can be used as a building block for SIP client software in VOIP, IM, and other real-time and person-to-person communication services. Its target platform is GNU Linux. Its features and development documentation are set forth, along with mailing lists, comparisons with other open-source SIP stacks, and projects using Sofia-SIP.
http://sofia-sip.sourceforge.net/
The multi-platform application allows for each uploading and downloading of files without the necessity of installing client software or plugins. It also works on all modern browsers, including Internet Explorer, Firefox, Safari, and smartphone browsers. Files can be transferred securely through HTTPS encryption protocol, and drag-and-drop file transfers are supported. Three purchase plans are available, and compared side-by-side, with features, prices, and limitations.
https://titanftp.com/
Hosted in secure data centers throughout the world, providing security, power backup, sufficient bandwidth, and maximum uptime, Ventrilo is a proprietary VoIP software that includes text chat. Available for the Windows platform, with DirectX installed, and for the Macintosh platform, Ventrilo is sometimes used by gamers who use the software to communicate with other players in the game. Its features, requirements, and setup instructions are put forth, along with a list of hosting companies.
http://www.ventrilo.com/