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IP Messenger for Win v5.7.3

   Serverless lightweight Messenger for LAN.
No cloud, Secure & High availability

Forum

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LastUpdate: 2025/03/25

Download v5.7.3 (2025/03/25) (for 32bit/64bit) Installer from WindowsForest Installer from Github (redirect) Change history Enhance Group chats are also available Chat&Messenger v5.x features 1. Auto member detection over routers The Member Master mode enables auto member detection over routers 2. Screen capture & editing functions Screen capture + various drawing functions (Also useful as a screenshot tool) 3. Add Send Queue Send Queue. If the receiver's PC is inactive, wait to send in the background. 4. Add Powerfull Logviewer - Quick View/Scroll more than 100,000 messages with inline images - Support Multi Tabs. - High speed incremental full text search. - Support to add comments/images 5. Misc Multiple destination reply support, automatic updates, dedicated commands (change absence/send/receive messages) Etc High speed file/folder transfer Message forwarding to Slack, etc. (If you want to limit forwarding, please use the Pro version.) Safety message communication (RSA2048bit + AES256bit) Help and license Help (#license)

If you have a question, please post IP Messenger Support Forum
If you want to customize ipmsg (Logging Server or etc), please contact to the email that describe in the end of this page.

v4.60 or earlier installer has vulnerability of DLL loading without intent (2017/07/31)

Relative Information

Using IPMsg for Win on Linux/MacOS (except Catalina)
1	Installing Wine (I recommend Wine-HQ lastest binary)
2	Download and IPMsg for Win installer, and extract ipmsg5xx_installer.exe
3	Run the installer by Wine and launch ipmsg from installer % wine ipmsg5xx_installer.exe
Ref.	Known problem: Screen Capture in MacOSX

Links for other platforms
IP Messenger for MacOS X (2014/09) G.Ishiwata	Support file/folder transfer
PetaClone for Java (2010/03) K.Gosha	Support file/folder transfer, multi-lang, embedded-images, message-encryption
IP Messenger for KDE (2010/03) K.Gosha	Support file/folder transfer, message-encryption
Android version Android Market	Some imprementations exist.

IP Messenger Support software
Old page	Old versions in 1996-2009

The Hardwares that communicate with IPMsg protocol
Keiko-chan series ISA Co.,Ltd.	Network tower/light beacons (This prodocut is not related to IPMsg project)
PDU-5160S ISA Co.,Ltd.	Remote power controller (This prodocut is not related to IPMsg project)

News

2016/06/15: "IP Messenger v4.00 beta has been released. Asahi Net, Inc is planning to develop enhancements for the enterprise."
We will accelerate the development of IP Messenger for Win as open source software.