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Smarsh Instant Messenger

smarshIM Mobile is a free application download that requires a paid account on the smarshIM service…

18 Alternatives To Smarsh Instant Messenger

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AWS GovCloud

Isolated AWS Region designed to allow US government agencies and customers to move sensitive workloads into the cloud.

Anologue

Disposable online chat.

BORGChat

BORGChat is a LAN messaging software program.
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BeeBEEP

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

Bopup IM Suite

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

ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.

ClearGov

Transparency & Budgeting Software for Local Governments | ClearGov

EchoWaves

Opensource Social Group Chat written in Ruby On Rails

Feem

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

GovDelivery

GovDelivery enables public sector organizations to connect with more people and to get those people to take action

GovPilot

GovPilot is a cloud-based government management platform that aims to improve the efficiency and performance of governmental organizations with an affordable and scalable software-as-a-service (SaaS).

Hyphen Messaging

Hyphen is an inter-company messaging app that allows businesses to instant message each other. Start building relationships, not just connections.

LAN Messenger

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

Niltalk

Free, instant, private, disposable chat

Output Messenger

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

Softros LAN messenger

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.

Winpopup LAN Messenger

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