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  1. Open Source Chat App
  2. Messenger Open Source Android
  3. Instant Messenger Open Source
  4. Messenger Open Source Linux
  5. Open Source Internal Messenger
  6. Open Source Instant Messenger

Get a secure, anonymous, peer-to-peer instant messenger

One messenger for Internet and LAN chat with end-to-end encryption

Version 1.1 (alpha)

Source code available under GNU GPLv3 Licence on GitHub
Messenger (open-source)(open-source)
FormatZIP File
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Technitium Mesh is a secure, anonymous, peer-to-peer (p2p), open source instant messenger designed to provide end-to-end encryption. Primary aim of developing this instant messenger is to provide privacy which is achieved using cryptography and anonymity using Tor network. It can be used over Internet and private LAN networks (without Internet) for instant messaging and file transfer with support for private chats and group chats.

Mesh is based on Bit Chat and is its successor. Mesh takes core ideas from its predecessor and removes a few. Notably, Mesh does not require centralized user registration and provides anonymous profile support using Tor hidden service. It also removes use of BitTorrent trackers for finding peers which was causing issues with Bit Chat since some ISPs blocking BitTorrent traffic would also block Bit Chat traffic. Instead, Mesh relies only on Distributed Hash Tables (DHT) for all purposes.

Mesh allows creating both pure p2p and anonymous profiles with support for running multiple profiles concurrently. Both p2p and anonymous profiles are interoperable such that a p2p profile user can connect with an anonymous profile user via Tor Network.

With Mesh, there is no meta data generated. User identifier is designed in such a way that it can be changed anytime to hide identity. Since, there is no user registration, we don't know who uses Mesh or how many people use it. In p2p mode, the connections use IPv4 or IPv6 connectivity directly to connect with peers without any server in between. With anonymous mode, all connectivity occurs over Tor network and uses Tor hidden service to accept inbound connections.

Click here to read Frequently Asked Questions (FAQ).

Peer-to-Peer

Open Source Chat App

  • Serverless, peer-to-peer architecture that uses Distributed Hash Tables (DHT).
  • No meta data is stored since even we don't know to whom you are chatting with.
  • Works as LAN chat just as it works on the Internet.
  • Works in private LAN networks not connected to Internet.
  • Anonymous profiles use Tor Network to hide your identity.

Secure

  • Uses RSA 2048 bit keys to generate profiles.
  • Provides end-to-end encryption with Perfect Forward Secrecy (PFS) using DHE-2048 or ECDHE-256.
  • Protocol is secured with AES 256-bit encryption with Authenticated Encryption.
  • Changeable user identifier to hide identity.
  • Open source implementation allows you to inspect the code.

Why Is Privacy Important?

Watch this episode of Last Week Tonight with John Oliver: Government Surveillance (HBO) in which John sits down with Edward Snowden to discuss the NSA, the balance between privacy and security, and dick-pics. You may wish to skip to 13:38 in the video to jump to the interview.

'Your rights matter because you never know when you're going to need them.'
- Edward Snowden

Alpha Version

Technitium Mesh current release is in alpha version. This means the software is not fully complete and will undergo major changes in its protocol or user interface design. There may be noticable bugs which will be addressed with an automatic update. You are welcome to report any issues by sending an email to support@technitium.com

Become A Patron

Make contribution to Technitium by becoming a Patron and help making new software, updates, and features possible.

LAN Messenger, which is currently available for Windows, Mac, and Linux is a free and open-source instant messaging application. Through a local network, this application will foster instant communication, eliminating the need for having a server and internet connection. More than just for instant messaging, it also comes with extra features, such as transferring files, archiving of past messages, and being notified of upcoming events.

Download LAN Messenger

  • Windows .exe installer v1.2.39 7.21 MB
  • Windows .zip v1.2.39 9.25 MB
  • Mac OS X .dmg v1.2.37 24.2 MB
  • Linux .deb v1.2.37 1.4 MB
  • Linux .rpm v1.2.37 2.6 MB

Screenshots

Support

Use Google Group for general discussion and GitHub for bug reports.

The following are some of the features of LAN Messenger:

Instant Messaging: You can instantly connect with other users on the network and start a conversation.

Private Network: No need to worry about your privacy. AES encryption with RSA offers industry-leading security.

Broadcast messages: You will have the option to notify all users within the network or choose specific users.

Messenger Open Source Android

Free sims for mac. Transfer Files: Forget about email attachments. This app makes it easy and hassle-free to transfer files to other users within the network.

Group Contacts: You can also easily organize people in your contact list. This will make it easy to find people when needed.

Messenger(open-source)

Instant Messenger Open Source

Log Messages: Previous conversations can also be archived, which you can access at any given time.

Messenger Open Source Linux

Works without Server: One of the best things about this instant messaging application is the lack of server that is required, making it less complicated.

Open Source Internal Messenger

Works without Internet Connection: This messaging application utilizes a local network, which means that you can send messages even without internet, which is beneficial in minimizing possible threats.

Open Source Instant Messenger

Stream torrent for mac. Supports Multiple Languages: You can choose from the different languages that will be used as the medium for the user interface.

Multi-platform Support: Regardless of your operating system, whether you are on Mac, Windows, or Linux, you can use this messaging application.