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Instant messaging (IM) technology is a type of online chat allowing real-time text transmission over the Internet or another computer network. Messages are typically transmitted between two or more parties, when each user inputs text and triggers a transmission to the recipient(s), who are all connected on a common network.[1] It differs from email in that conversations over instant messaging happen in real-time (hence "instant"). Most modern IM applications (sometimes called "social messengers", "messaging apps", "chat apps" or "chat clients") use push technology and also add other features such as emojis (or graphical smileys), file transfer, chatbots, voice over IP, or video chat capabilities.

Instant messaging was pioneered in the early Internet era; the IRC protocol was the earliest to achieve wide adoption.[2] Later in the 1990s, ICQ was among the first closed and commercialized instant messengers, and several rival services appeared afterwards as it became a popular use of the Internet.[3] Beginning with its first introduction in 2005, BlackBerry Messenger, which initially had been available only on BlackBerry smartphones, soon became one of the most popular mobile instant messaging apps worldwide. BBM was for instance the most used mobile messaging app in the United Kingdom[4] and Indonesia.[5] Instant messaging remains very popular today; IM apps are the most widely used smartphone apps: in 2018 there were over 50 million Signal users, 980 million monthly active users of WeChat and 1.3 billion monthly users of WhatsApp Messenger.

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Instant messaging is a set of communication technologies used for text-based communication between two (private messaging) or more (chat room) participants over the Internet or other types of networks (see also LAN messenger).[6] IM chats happen in real-time. Online chat and instant messaging differ from other technologies such as email due to the perceived quasi-synchrony of the communications by the users, although some systems allow users to send offline messages that the other user receives when logging in.[7]

Modern IM services generally provide their own client, either a separately installed piece of software, or a browser-based client. They are normally centralised networks run by the servers of the platform's operators, unlike peer-to-peer protocols like XMPP. These usually only work within the same IM network, although some allow limited function with other services. Third party client software applications exist that will connect with most of the major IM services. There is the class of instant messengers that uses the serverless model, which doesn't require servers, and the IM network consists only of clients. There are several serverless messengers: RetroShare, Tox, Bitmessage, Ricochet, Ring.

Though a relatively new feature, peer-to-peer payments are available on major messaging platforms. This functionality allows individuals to use one application for both communication and financial tasks. The lack of a service fee also makes messaging apps advantageous to financial applications. Major platforms such as Facebook messenger and WeChat already offer a payment feature, and this functionality is likely to become a standard amongst IM apps competing in the market.

Early instant messaging programs were primarily real-time text, where characters appeared as they were typed. This includes the Unix "talk" command line program, which was popular in the 1980s and early 1990s. Some BBS chat programs (i.e. Celerity BBS) also used a similar interface. Modern implementations of real-time text also exist in instant messengers, such as AOL's Real-Time IM[19] as an optional feature.[20]

Users sometimes make use of internet slang or text speak to abbreviate common words or expressions to quicken conversations or reduce keystrokes. The language has become widespread, with well-known expressions such as 'lol' translated over to face-to-face language.

For corporate use, encryption and conversation archiving are usually regarded as important features due to security concerns.[39] There are also a bunch of open source encrypting messengers.[40] Sometimes the use of different operating systems in organizations requires use of software that supports more than one platform. For example, many software companies use Windows in administration departments but have software developers who use Linux.

By 2014 however, the level of safety offered by instant messengers was still extremely poor. According to a scorecard made by the Electronic Frontier Foundation, only 7 out of 39 instant messengers received a perfect score, whereas the most popular instant messengers at the time only attained a score of 2 out of 7.[47][48] A number of studies have shown that IM services are quite vulnerable for providing user privacy.[49][50]

As of March 2022, the most used messaging apps worldwide include: Signal with 100 million, Line with 217 million, Viber with 260 million, Telegram with 700 million, WeChat with 1.2 billion, Facebook Messenger with 1.3 billion, and WhatsApp with 2.0 billion users.[54] There are 25 countries in the world where WhatsApp messenger is not the market leader in messaging apps, such as the United States, Canada, Australia, New Zealand, Denmark, Norway, Sweden, Hungary, Lithuania, Poland, Slovakia, Philippines, and China.[54][55][56]

You may not have heard of Chanty, but this relative newcomer should be on your radar. Joining the ever-crowded field of messenger software in 2018, Chanty affords small to mid-sized companies an AI-based business IM tool at a reasonable price.

Instant messengers are in demand. The rapid growth of messaging apps as a preferred communication channel for billions, not to mention the enhanced security and productivity of business instant messengers, make IM technology a must have for any company.

On the other side of the coin, the most notable disadvantages of instant messaging are related to productivity and work distraction. While business instant messaging can help cut down needless time spent on ineffective communication, certain employees may waste hours each day on instant messenger.

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Another limitation is related to its effectiveness in large groups. Instant messaging is a great tool for quick information transfers and casual conversation between two people or small groups. However, when numerous people are added to a single group chat, it can be difficult for everyone to follow the conversation." } },{ "@type": "Question", "name": "What are the advantages and disadvantages of instant messaging?", "acceptedAnswer": { "@type": "Answer", "text": "Instant messaging comes with many advantages, the most prominent being that it facilitates short, focused conversations, enabling people to quickly share information. Instant messenger is more reliable than email and it grabs recipients' attention more rapidly.

Another great plus of instant messaging is that it easily connects people regardless of their location. It's especially helpful for people who work in hybrid or remote settings. Instant messenger apps are simple to use, intuitive and need very little tech knowledge.

A core feature of many instant messenger clients is the ability to see whether a friend or co-worker is online and connected through the selected service -- a capability known as presence. As the technology has evolved, many IM clients have added support for features such as file transfer and image sharing within an IM session.

Instant messaging is used for real-time communication among users on the internet. Enterprise and consumer users find it an immediate, convenient and flexible alternative to email. IM'ing is faster than email and more direct than other asynchronous forms of communication. Users can IM from a range of devices, not just their phone.

Texting uses a cellular network to exchange messages. Two cellphone users can communicate via text using any cellular carrier -- the carriers do not need to be the same. The users do not need an internet connection, just cell carrier plans and cellphones. Cellular companies control the cost and message limits of communicating via text message.

By contrast, instant messaging requires that both parties have internet connections to exchange messages. The communicating devices do not have to be phones -- they can be computers, tablets, smartphones or any other internet-connected device. IM apps often require users to communicate using the same application. A user cannot send a message on Facebook Messenger to a contact using Microsoft Teams. There may be a delay in message transmission without a proper internet connection.

i've written a simple local messenger with c# for use of myself. now it works over a local network(lan,wifi) and works fine.now i want to give it to my friend and use it over internet but have no idea how to use different ip except local host.

Basically, your router is what connects your network of computers to the internet and allows connections to be be made through ports. If you don't understand what a port is, it is what is used for internet connections to be made and basically acts like the house number to a street address. It tells where on that street the house it and is more specific than just the street address. In terms of networking, this is a number which tells the specific place the communication is going. The port number ("the house number") is telling where on the computer's IP address ("the street address") to connect. ff782bc1db