BeeBEEP 5.8.6 + Portable

Added "Enable visual notifications for chat window" option menu Settings - Notifications
Added "Change emoticon size in chat" option in menu Settings - Chat.
Fixed a bug in connection to prevent PING before HELLO message.
Fixed a bug on using Message History with CTRL+Up / CTRL+Down.
Fixed a bug on "Raise chat window on new message".
Fixed a bug that did not allow messages to be displayed correctly between the dark theme and the default one.
Emoticons will no longer be displayed larger than their maximum size.
Important private messages now open the chat window.
Added "EnableReceivingHelpMessages" option in beebeep.rc file.
Added global shortcut CTRL+SHIFT+1 for PANIC BUTTON and HELP REQUEST automatic message.

- New feature: almost all the options of file beebeep.ini can be used in file beebeep.rc also
- New feature: added "Use high resolution emoticons" option
- New feature: added ECDH key exchange to encryption protocol
- New feature: added "Auto save interval" for chat messages to prevent data loss
- New feature: added "Favored emoticons" as tab in emoticon list
- New feature: added Voice Message Player interface
- New dark theme added in the interface
- User icons in chat window can be clicked also if the user is offline
- Disabled by default the option to search users by a multicast datagram
- Suspend/sleep mode is now managed also in Linux systems.
- File paths will be recognized and made clickable in chat (it must be a single message).
- Added "KeepModificationDateOnFileTransferred" option in beebeep.ini (it is always enabled in BeeBOX)
- Added "AllowedFileExtensionsInFileTransfer" option in beebeep.rc
- Added "AllowOnlyHostAddressesFromHostsIni" option in file beebeep.rc
- Added "Clear recent emoticons" in menu option of the chat bar
- Added "ConnectionKeyExchangeMethod" option in beebeep.rc
- Added "AddNicknameToDataFolder" option in beebeep.rc
- Fixed known issue: BeeBEEP prevents the CTRL+ALT+B (or CMD+ALT+B on MacOSX) key sequence in other applications from working
- Fixed a bug in options "Disable create message" and "Disable edit groups"
- Fixed a visualization bug if you open an user VCARD near the side of your desktop
- Fixed a bug on Download folder when you copy BeeBEEP from a computer to another one
- Fixed security issue with command line argument -platformpluginpath

Как сложно полиции, при необходимости, прочесть переписку?

Как сложно полиции, при необходимости, прочесть переписку?

- New feature: voice messages (you can record your message and send it as file)
- New feature: file transfer pause/resume
- New feature: data compression with zlib
- Voice messages can be also sent to offline users like text messages
- Added "Quote selected text" option to context menu (right click) of the chat
- Added "CheckUserConnectedFromDatagramIp" option in beebeep.rc (to prevent multiple connections from the same user but different ip addresses)
- Added "Clear system messages" option in context menu (right click) of activity and chat windows
- Added "SkipLocalHardwareAddresses" in beebeep.rc to skip unesuful network interfaces
- The option "AllowMultipleInstances" can be disabled also in Terminal Server because it checks also user account
- The avatar icon size is also applied in member icons of the chat windows
- Added "On sending message" option in Settings - Chat menu for "one-time" message:
- Do nothing (default)
- Minimize chat window
- Close chat window
- Added "DisableDesktopSharing" option in beebeep.rc
- Added "DisableBeepInUserStatusBusy" option in beebeep.ini
- Added "EnableBeepInActiveWindow" option in beebeep.ini
- Added "UseUserFullName" option in beebeep.rc to show (if exists) user's full name instead of nickname
- Added "DisableEncryptedConnections" option in beebeep.rc
- Added "AllowNotEncryptedConnections" option in beebeep.rc (used with "DisableEncryptedConnections")
- Added "AllowEncryptedConnectionsAlso" option in beebeep.rc (used with "DisableEncryptedConnections")
- Added "BroadcastToLocalSubnet" option to send or not send the HELLO message to the local subnet twice when multicasting is active
- User first and last names, email and phone number are now saved to use it also if the user is offline
- Added "AppendHostNameToUserName" option in beebeep.rc
- Added "DisableConnectionSocketDataCompression" option in beebeep.rc

- "ChatSaveFileTransfers" and "ChatSaveSystemMessages" options added in Settings - Chat menu:
  if enabled history saves also these messages
- Disabled High DPI icons in windows (can be enabled with qt.conf file)
- Added new option in Settings - Chat - "Save maximum lines in chat":
  you can choose how many lines to save for every chat
- Added "Clear cache items after X days" option: default is 96 days
- Added new option in Settings - Chat - "Show only # messages" to avoid performance issue
- Added "Always download files into the folder with the user's name" option in menu Settings - File Transfer
- The names of users and chats that contain the characters < > will now be correctly displayed (do not abuse)
- Improved search for predefined folders in Unix environment
- First release of a debian package for amd64 systems (beta)
- Compiled with large file support in Linux
- Reorganization of the "Settings" menu:
  - "Sound", "System tray" and "on new message event" options are now grouped into the menu Settings - Notifications
  - "Workgroups" -> "Your workgroups" in "Network" menu
  - "Set your status to away automatically" is now in "User status" menu in the toolbar
  - added new Menu "Interface"
- Added "Show users in their workgroups" option in user list settings
- Added "Time left" column in File Transfer window
- Added "Add up to # files to the transfer queue" option in Settings - File Transfer menu

Ну вот я как раз в условиях, приближённых к обрисованным. Пытаюсь пробовать этот бибип вместо уже совсем старого ланталька. Но пока в связке виндовс-7 - 10-LTSC пчёлы друг друга не видят (((( По ip-адресам файлообмен-то наладить удалось (тоже не сразу вдруг).
А с чатом пока не прёт.

что такое произошло в 2018-ом году?

Removed option "On close minimize on tray" for MacOSX
Added more debug messages on user recognition
Added "Autoresponder" when user send messages in group where he is not member
Fixed bug: duplicate first message on chat window

Fixed bug: "Transfer completed" message is not showed in chat
File sharing window now save its geometry on close
Create message window now save its geometry on close
Added option "Enable maximize button"
Groups can be created also with just one member (and you)

Patched Qt 5.9.6: window state are not restored (save only geometry option added)
Prevent "user collision" from same IP address
Fixed "slow connection bug" at startup
Added option "Always open chat on new message"
Added option to remove members from group
Added option "AllowAddMembersToGroup" in beebeep.rc
Added option "AllowRemoveMembersFromGroup" in beebeep.rc
Added option "Reset geometry of all windows"
Fixed some GUI bugs
On new message the BeeBEEP main icon also blinks

Added "Create message" window to send one time message to many
Added default multicast group address 239.255.64.75
Added option "Use default multicast group address"
Added option "Show users on connection"

Fixed compatibility of window geometry and state with previous version
Fixed minor bug in save settings
Added option "Save window's geometry" on close