Best BigAnt Office LAN Messenger Alternatives & Competitors in 2025

Secure instant messenger for any network

freemium $6.0 / One-off (per user)

Organize secure messaging system and communicate instantly via self-hosted IM server.

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Try for free paid Free Trial $4.99 / Monthly (User)

LAN Messenger is a decentralized UDP IM-style chat client which supports usernames...

Open Source

BORGChat is a LAN messaging software program.

LAN messenger for an internal office chat for home or business users. It does not require a server and is very easy to install and use. It supports personal chats, group chats, message brodcasting, files transfer and remote desktop access.

AChat enables you to chat on your local network (LAN). But you can also share entire directories or send specific files, show images to other users and send messages even to users who are currently offline. Everything with full Unicode support.

Secure instant messenger app for office provides seamless instant messaging solutions for all office, corporate and enterprise business communication needs.

A network messaging application that's feature-rich yet easy-to-use and won't cost you a fortune, RealPopup LAN chat offers fast, stable messaging across your local network. No application server required, just install on your PC and start messaging!

KouChat is a simple serverless chat client for local area networks (wifi).

IP Messenger (Official Site)

Winpopup LAN Messenger is a cost-effective Office, Corporate, Enterprise Instant Messaging solution.

You can message and share files inside your intranet without a server.

Share files offline. No servers. No cloud. No limits.