ZenMap (NMap) is a deep network or host scanner for determining the state of scanned objects (ports and corresponding services).
The following methods are used for scanning: UDP, TCP (connect), TCP SYN (half-open), FTP-proxy (breakthrough via ftp), Reverse-ident, ICMP (ping), FIN, ACK, Xmas tree, SYN and NULL scanning, etc.
Additional features: OS detection, "invisible" scanning, dynamic delay calculation and packet retransmission, parallel scanning, detection of inactive hosts, scanning using false hosts, detection of the presence of packet filters, direct RPC scanning, scanning using IP fragmentation, etc.

Telegram is a messenger that allows you to exchange text and voice messages and media files of many formats. It uses a proprietary server part with closed code, running on the capacities of several companies.

In addition to the standard exchange of messages in dialogs and groups, the messenger can store an unlimited number of files, maintain channels (microblogs), create and use bots.