TrueConf Server – Business-Grade Offline Messaging
Empower your team with reliable internal chat and collaboration tools that work without internet access. Fully self-hosted, scalable, and secure.

Empower your team with reliable internal chat and collaboration tools that work without internet access. Fully self-hosted, scalable, and secure.
Group and personal chats
Managing chat moderators and transferring owner rights
Edit, reply & forward messages
Text formatting: bold, underline, strikethrough, and italics
Participants mentions
Customization of pop-up notifications
«Typing» status
Information about reading the message
Working in the Company's Contour
Offline operation within a closed network without an Internet connection.
Safe Data Transfer
Strong encryption of all corporate communications.
Exchange messages during conferences and beyond! Respond to colleagues' requests in personal and group chats, swiftly transitioning discussions into online meetings.
Receive push notifications when new messages appear in personal and group chats.
Share and quickly view files directly in TrueConf client applications.
View the resulting images and video files, as well as PDF documents, in TrueConf desktop client applications.
With the help of a convenient address book and department navigation, you can contact any employee of the company and see which colleagues are available for communication.
Enhance the capabilities of the address book by integrating Active Directory or any LDAP directory with TrueConf Server.
Single Sign-On (SSO) technology, along with support for NTLM and Kerberos protocols, allows users of TrueConf Server client applications to securely log in without entering a username and password.
Access your TrueConf Server account on multiple devices simultaneously while synchronizing your correspondence and message drafts.
Desktop Applications
The corporate messenger for video conferencing and secure communication, running on popular operating systems and browsers.
Mobile Devices
Organize video conferences and discuss tasks in chats wherever you are — all corporate communications in one mobile application!
Offline messaging enables the exchange of messages without an active internet connection by utilizing alternative communication methods such as Bluetooth, Wi-Fi Direct, or mesh networks. This technology allows devices to communicate directly, making it essential in environments where internet access is unreliable or unavailable.
Here’s how these technologies function:
Bluetooth: Connects devices within a short range (up to 330 feet) for direct messaging, ideal for small groups nearby.
• Wi-Fi Direct: Allows devices to connect via Wi-Fi signals without needing a traditional network, offering a longer range and faster data transfer compared to Bluetooth. This makes it suitable for environments where devices are spread out but still within a considerable distance from each other.
• P2P Messaging: Sends messages directly between devices without a central server, often using Bluetooth or Wi-Fi Direct. This decentralized approach, known as p2p messaging, ensures that communication can continue even if one or more nodes in the network go offline, enhancing reliability and security
• Local Area Network (LAN): Connects devices within the same local network, such as in a home or office, allowing message exchange without requiring an external internet connection. This method leverages existing infrastructure to facilitate seamless communication.
Reliable Communication: Ensures messages are delivered even in areas with poor or no internet connectivity, maintaining constant contact. Plus, if you use offline messaging app via text message API or software, the recipients don’t even need to download any app.
Emergency Use: Vital for communication during natural disasters or emergencies when traditional networks may be down, facilitating rescue and coordination efforts.
Security: Provides secure communication through direct device-to-device connections, reducing the risk of data breaches and ensuring privacy.
Natural Disasters: Ensures communication during hurricanes, earthquakes, or floods when internet and cellular networks are down, aiding in emergency responses.
Large Events: Facilitates messaging at concerts, festivals, or sports events where network congestion is common, ensuring attendees stay connected.
Corporate Segment: Enables internal communication in offices or corporate environments without relying on external internet, enhancing data security and operational continuity.
Government and Army: Provides secure and reliable communication for government agencies and military operations, where confidentiality and independence from public networks are crucial. This ensures sensitive information remains protected, and operational efficiency is maintained.
TrueConf
TrueConf is an on-premises corporate messenger within a local area network that provides comprehensive communication solutions. Deployed on company hardware, it guarantees data security and prevents third party access to information. The server operates autonomously, ensuring constant control and management, with detailed installation and configuration guides for both Windows and Linux operating systems.
TrueConf supports high-quality 4K video communication and screen sharing for enhanced collaboration. Personal and group chats enable efficient team communication, while robust privacy protection ensures secure interactions. In addition, the platform supports large conferences with up to 1500 users and 49 speaking participants, making it scalable for extensive enterprise use.
Briar
Briar operates with Bluetooth and Wi-Fi Direct as a system of meshes; thus, it can be used in places where one cannot access the internet or when it is unreliable. Briar also uses strong encryption to ensure that all the conversations remain secret and safe for users who are worried about their data privacy.
Moreover, the application is open-source hence making its security protocols verifiable by other independent parties hence increasing trust. Furthermore, group chats and forums are just two of its many features which make it a versatile tool for communication purposes for different types of people using different forms of communication. By and large, Briar is a very strong offline messaging app that would be perfect for keeping communications secure even under difficult situations.
Bridgefy
Bridgefy is one of the most remarkable offline messengers that excels in providing a medium for communication without necessarily using the Internet through Bluetooth. It is particularly essential during huge events, natural calamities or remote areas having inadequate or no normal network coverage. Messages can be sent to distances of up to 330 feet, and messages transmit from one user to another in order to expand the communication range by creating a mesh network. Additionally, integrating Network Monitoring Software can enhance connectivity efficiency by analyzing device performance, identifying potential disruptions, and ensuring seamless offline communication. Bridgefy’s user-friendly interface makes it simple for all people to use.
Additionally, it supports group messaging as well as individual chatting thereby being appropriate in various settings with effective communication channels. However, this means that it works best when users are in close proximity to each other since it relies on Bluetooth technology.
FireChat
FireChat is an innovative offline messaging application that facilitates communication without an Internet connection by using mesh networking technology. This technology allows messages to be sent through a network of nearby devices using Bluetooth and Wi-Fi Direct. FireChat is especially valuable in scenarios where traditional networks are unavailable, such as during natural disasters, large public gatherings, or in remote locations. The application supports both private and group messaging, making it adaptable to different communication needs. Overall, FireChat is a reliable tool for maintaining connectivity in offline situations, providing a dependable solution when Internet access is not available.
Signal Offline Messenger
With Wi-Fi Direct technology, Signal Offline Messenger is a great offline messaging app for communication without connectivity. Consequently, delivered messages are on device. This makes it suitable for regions that have poor network coverage or scenarios where internet cannot be accessed. In order to facilitate versatile conversations, the program supports both one-to-one and multiple chats among users. Due to its powerful encryption, Signal Offline Messenger has become highly recognized as one of the most secure and private messaging applications across different platforms. It is simple in look and feel and can be easily navigated; hence encouraging an uninterrupted user experience. Its online-offline duality with top-notch security features is invaluable for secure communicators. All in all, this app remains dependable when you need to stay connected offline, ensuring privacy and efficiency.