Today, more and more companies give up free public messengers based on Internet connection due to a number of reasons: They can cause confidential information leaks; Staff time is often spent on useless chatting with the family or friends; They don’t include elements of corporate culture. Another option, a reliable lan messenger is economically viable. There are a lot of variations designed and optimized specifically for small / mid-sized businesses or large corporations. They are distinguished by a combination of features: reliability; user-friendly interface; low price (the cost of one license could be 5$). As for the functionality, in addition to sending instant messages and transferring files, they also include…