Open Source Go Communications Software

Go Communications Software

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  • 1
    MailHog

    MailHog

    Web and API based SMTP testing

    Inspired by MailCatcher, easier to install. Built with Go, MailHog runs without installation on multiple platforms. Run it from Docker Hub or using the provided Dockerfile. The SMTP server starts on port 1025, the HTTP server starts on port 8025, in-memory message storage. ESMTP server implementing RFC5321. Support for SMTP AUTH (RFC4954) and PIPELINING (RFC2920). Web interface to view messages (plain text, HTML or source). Supports RFC2047 encoded headers. Real-time updates using EventSource. Release messages to real SMTP servers. Chaos Monkey for failure testing. HTTP API to list, retrieve and delete messages. See APIv1 and APIv2 documentation for more information. HTTP basic authentication for MailHog UI and API. Multipart MIME support. Download individual MIME parts. In-memory message storage. MongoDB and file based storage for message persistence. Lightweight and portable. No installation required.
    Downloads: 82 This Week
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  • 2
    EdgeVPN

    EdgeVPN

    The immutable, decentralized, statically built p2p VPN

    Fully Decentralized. Immutable. Portable. Easy to use Statically compiled VPN and a reverse proxy over p2p. EdgeVPN uses libp2p to build private decentralized networks that can be accessed via shared secrets.
    Downloads: 51 This Week
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  • 3
    Proton Mail Bridge

    Proton Mail Bridge

    Proton Mail Bridge application

    Proton Mail Bridge is a desktop application that runs in the background on Windows, macOS, and Linux to enable users to access their Proton Mail encrypted email accounts with traditional email clients like Outlook, Thunderbird, Apple Mail, and others via local IMAP/SMTP servers. Because standard IMAP cannot natively decrypt end-to-end encrypted messages, Bridge acts as a translator that downloads encrypted mail, decrypts it locally, and serves it to your preferred mail client over a local server, while encrypting outgoing messages before they’re sent to Proton’s servers. It provides a seamless integration layer for users who need offline support, familiar local client workflows, or tighter integration with desktop tools while preserving Proton’s zero-access encryption model. The Bridge app continues running even when its GUI is closed so that mail clients can remain connected and synchronized, and it supports automatic startup and robust credential handling via secure storage.
    Downloads: 11 This Week
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  • 4
    Berty

    Berty

    Berty is a secure peer-to-peer messaging app

    Berty is an open, secure, offline-first, peer-to-peer and zero trust messaging app. Berty is an encrypted and offline peer-to-peer messenger with no central server. Connect with or without an internet connection, message for free, and avoid surveillance and censorship. Berty is fresh off the development line and hasn’t been audited yet. Please keep this in mind when exchanging data. In some countries, even a lol or a like can get you sent to jail. Berty is end-to-end encrypted - not even our developers could access your data, let alone corporations or governments. Just like blockchain technologies, Berty doesn’t pass your data through central servers - the place where internet service providers, hackers, and governments can intercept your data. Instead, Berty’s network is distributed, based on P2P direct messaging. Berty couldn’t care less about who you are. You don’t need to provide your real name, an email, or a date of birth. You don’t even need a SIM card!
    Downloads: 10 This Week
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    Cloud Torrent

    Cloud Torrent

    Cloud Torrent, a self-hosted remote torrent client

    Cloud torrent is a a self-hosted remote torrent client, written in Go (golang). You start torrents remotely, which are downloaded as sets of files on the local disk of the server, which are then retrievable or streamable via HTTP. Go is required to install from source. The provided set of core features requires large structural changes and therefore requires a complete rewrite for best results. This rewrite is in progress in the 0.9 branch though it will take quite some time. It will be capable of transfering files from and source file-system to any destination file-system. A torrent can be viewed a folder with files, just like your local disk, and Dropbox. As long as it has a concept of files and folders, it could potentially be a cloud-torrent file-system backend. During a file tranfer, one could apply different transforms against the byte stream for various effect.
    Downloads: 10 This Week
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  • 6
    qrcp

    qrcp

    Transfer files over wifi from your computer to your mobile device

    qrcp binds a web server to the address of your Wi-Fi network interface on a random port and creates a handler for it. The default handler serves the content and exits the program when the transfer is complete. When used to receive files, qrcp serves an upload page and handles the transfer. Most QR apps can detect URLs in decoded text and act accordingly (i.e. open the decoded URL with the default browser), so when the QR code is scanned the content will begin downloading by the mobile browser. When sending multiple files at once, qrcp creates a zip archive of the files or folders you want to transfer, and deletes the zip archive once the transfer is complete. When receiving files, qrcp serves an “upload page” through which you can choose files from your mobile. The default configuration file is stored in $HOME/qrcp.json, however, you can specify the location of the config file by passing the --config flag.
    Downloads: 6 This Week
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  • 7
    Pydio Cells

    Pydio Cells

    Formerly AjaXplorer, file sharing platform for the enterprise

    Pydio Cells is the mature open source alternative to dropbox and box, for the enterprise. Why building your own box? You need to access your documents across multiple devices, and regularly share documents (weblinks) and folders with your contacts and teams. Still, using a consumer SaaS box or drive service is neither practical nor safe. And enterprise SaaS box or drive services are expensive and come with Disk Storage that you already have on your servers or private cloud. How to build your own box with Pydio? Easily install Pydio on your servers or cloud of choice, Simply share documents and folders with your teams, Administrate your box with an Entreprise grade console (rights, groups, plug ins), Access documents with a Web Gui, Smartphones and tablet apps (iOS, Android), Sync folders on your computer (PC, Mac, Linux).
    Downloads: 24 This Week
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  • 8
    Downloads: 38 This Week
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  • 9
    Notifuse

    Notifuse

    Notifuse is an open-source & modern emailing platform

    Notifuse is an open-source, modern, self-hosted emailing and communications platform designed to replace proprietary services like Mailchimp, Brevo, and Klaviyo with a self-managed solution. It’s built with a Go backend and a React frontend to offer both developer-friendly APIs and a user-centric visual interface with enterprise-grade capabilities such as campaign creation, subscriber segmentation, and detailed analytics. Notifuse supports both newsletters and transactional emails through a RESTful API, letting organizations maintain full control over their email infrastructure without expensive per-message pricing. The system includes a drag-and-drop MJML email builder, webhook integrations, and multi-provider support for SMTP services and cloud providers, while also tracking opens, clicks, and delivery performance in real time.
    Downloads: 4 This Week
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  • 10
    IPFS Kubo

    IPFS Kubo

    An IPFS implementation in Go

    Kubo was the first IPFS implementation and is the most widely used one today. Implementing the Interplanetary Filesystem - the Web3 standard for content-addressing, interoperable with HTTP. Thus powered by IPLD's data models and the libp2p for network communication. Kubo is written in Go. IPFS is a global, versioned, peer-to-peer filesystem. It combines good ideas from previous systems such as Git, BitTorrent, Kademlia, SFS, and the Web. It is like a single BitTorrent swarm, exchanging git objects. IPFS provides an interface as simple as the HTTP web, but with permanence built-in. You can also mount the world at /ipfs.
    Downloads: 3 This Week
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  • 11
    MOSINT

    MOSINT

    An automated e-mail OSINT tool

    MOSINT is the fastest OSINT Tool for emails. It helps you gather information about the target email. Email validation, check social accounts, check data breaches and password leaks, finding related emails and domains, scan Pastebin Dumps. Google Search and DNS Lookup.
    Downloads: 3 This Week
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  • 12
    NATS

    NATS

    Server for NATS.io, the cloud and edge native messaging system

    With flexible deployments models using clusters, superclusters, and leaf nodes, optimize communications for your unique deployment. The NATS Adaptive Edge Architecture allows for a perfect fit for unique needs to connect devices, edge, cloud or hybrid deployments. With true multi-tenancy, securely isolate and share your data to fully meet your business needs, mitigating risk and achieving faster time to value. Security is bifurcated from topology, so you can connect anywhere in a deployment and NATS will do the right thing. With the ability to process millions of messages a second per server, you’ll find unparalleled efficiency with NATS. Save money by minimizing cloud costs with reduced compute and network usage for streams, services, and eventing. NATS self-heals and can scale up, down, or handle topology changes anytime with zero downtime to your system. Clients require zero awareness of NATS topology allowing you future proof your system to meet your needs of today and tomorrow.
    Downloads: 3 This Week
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  • 13
    PingMe

    PingMe

    PingMe is a CLI which provides the ability to send messages or alerts

    PingMe is a personal project to satisfy my need to have alerts, most major platforms have integration to send alerts but it's not always useful, either you are stuck with one particular platform, or you have to do a lot of integrations. I needed a small utility that I could just call from my backup scripts, cron jobs, CI/CD pipelines, or from anywhere to send a message with particular information. And I can ship it everywhere with ease. Hence, the birth of PingMe. Everything is configurable via environment variables, and you can simply export the logs or messages to a variable that will be sent as a message, most of all this serves as a swiss army knife sort of tool that supports multiple platforms.
    Downloads: 3 This Week
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  • 14
    Project Lotus

    Project Lotus

    Reference implementation of the Filecoin protocol, written in Go

    Lotus is the reference implementation for the Filecoin network. It is written in Go, and is maintained by the Protocol Labs team. This website contains all the information you need to spin up a Lotus node, become a Filecoin storage provider, or just tinker around with the Filecoin network! Filecoin is a network of computers that allows you to store your data online. But while online storage services aren't anything new, Filecoin is different. It doesn't use centralized servers to store your data or rely on aggressive analytics tactics to make a profit and pay its shareholders. You can find out more about Filecoin and how it works over at docs.filecoin.io.
    Downloads: 3 This Week
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  • 15
    Tinode Instant Messaging Server

    Tinode Instant Messaging Server

    Instant messaging platform

    Instant messaging server. Backend in pure Go (license GPL 3.0), client-side binding in Java, Javascript, and Swift, as well as gRPC client support for C++, C#, Go, Java, Node, PHP, Python, Ruby, Objective-C, etc. (license Apache 2.0). Wire transport is JSON over websocket (long polling is also available) for custom bindings, or protobuf with gRPC. Persistent storage is any one of RethinkDB, MySQL or MongoDB. A third-party unsupported DynamoDB adapter also exists. Other databases can be supported by writing custom adapters. Tinode is not XMPP/Jabber. It is not compatible with XMPP. It's meant as a replacement for XMPP. On the surface, it's a lot like open source WhatsApp or Telegram. Version 0.17. This is beta-quality software, feature-complete and stable but probably with a few bugs. Follow instructions to install and run or use one of the cloud services provided.
    Downloads: 3 This Week
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  • 16
    Wayback

    Wayback

    An archiving tool with an IM-style interface that prioritizes privacy

    Wayback is a web archiving and playback tool that allows users to capture and preserve web content. It provides an IM-style interface for receiving and presenting archived web content, and a search and playback service for retrieving previously archived pages. Wayback is designed to be used by web archivists, researchers, and anyone who wants to preserve web content and access it in the future. Wayback is an open-source web archiving application written in Go. With a modular and customizable architecture, it is designed to be flexible and adaptable to various use cases and environments. It provides support for multiple storage backends and integration with other services. Whether you need to archive a single web page or a large collection of web sites, Wayback can help you capture and preserve web content for posterity. With an easy-to-use interface and powerful features, Wayback is a valuable tool for anyone interested in web archiving and preservation.
    Downloads: 3 This Week
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  • 17
    gtkcord4

    gtkcord4

    GTK4 Discord client in Go, attempt #4

    GTK4 Discord client in Go, attempt #4. gtkcord4 needs GTK4, object-introspection, and optionally libcanberra. If compiling, then the library headers are also required. gtkcord4's CI automatically builds each release for Linux x86_64 and aarch64. See the Releases page for the binaries.
    Downloads: 3 This Week
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  • 18
    Hyprspace

    Hyprspace

    A Lightweight VPN Built on top of IPFS + Libp2p

    A Lightweight VPN Built on top of IPFS & Libp2p. Libp2p is a networking library created by Protocol Labs that allows nodes to discover each other using a Distributed Hash Table. Paired with NAT hole punching this allows Hyprspace to create a direct encrypted tunnel between two nodes even if they're both behind firewalls. Moreover! Each node doesn't even need to know the other's ip address prior to starting up the connection. This makes Hyprspace perfect for devices that frequently migrate between locations but still require a constant virtual ip address.
    Downloads: 2 This Week
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  • 19
    gtkcord

    gtkcord

    A Gtk3 Discord client in Golang

    A lightweight Discord client which uses GTK3 for the user interface. Because the official client is lagging too hard for me to ignore. gtkcord3 won't be receiving any new features. It is being maintained at a minimal level just to ensure that it's usable on my computer. Crashed will still be fixed as I use the application, but that's about it.
    Downloads: 2 This Week
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  • 20
    listmonk

    listmonk

    High performance, self-hosted, newsletter and mailing list manager

    Performance and features packed into a single binary. Manage millions of subscribers across many single and double opt-in lists with custom JSON attributes for each subscriber. Query and segment subscribers with SQL expressions. Use the super fast bulk importer (10k records per second) or use HTTP/JSON APIs or interact with the simple table schema to integrate external CRMs and subscriber databases. Visualize and compare campaign performance. Connect external visualization programs to the database easily with the simple table structure. Create powerful, dynamic e-mail templates with the Go templating language. Use template expressions, logic, and 100+ functions in subject lines and content. Write HTML e-mails in a WYSIWYG editor, Markdown, raw syntax-highlighted HTML, or just plain text. Highly configurable, multi-threaded, high-throughput multi-SMTP e-mail queues for super fast campaign delivery.
    Downloads: 2 This Week
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  • 21
    ssh-chat

    ssh-chat

    Chat over SSH

    ssh-chat is a custom SSH server written in Go that allows you to chat over SSH connection. When you open your terminal and type in a command, instead of getting a shell you get a chat prompt. With ssh-chat you get a simple chat room over a secure shell connection, where you can send and receive private messages, check any user's public key fingerprint for identification purposes, and more. You can change the color theme of the chat, block or kick users, and chat on just about any platform where an SSH client is available, including on mobile.
    Downloads: 2 This Week
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  • 22
    Simple-Http-File-Server

    Simple-Http-File-Server

    Simple http file server with Windows GUI application

    This is a simple Windows GUI application that provides an http server service for sharing local files, and support upload file. It does not require installation and can be directly downloaded and run.
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    Downloads: 36 This Week
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  • 23
    Centrifugo

    Centrifugo

    Scalable real-time messaging server in a language-agnostic way

    Centrifugo is language-agnostic. It's a standalone server with a simple API that integrates well with an application written in any programming language. No need to change an existing application architecture to introduce real-time features. Just add Centrifugo nearby and let it deal with persistent connections. Centrifugo is built in Go language with some smart optimizations inside. It has good performance – see a description of a test stand with one million WebSocket connections and 30 million delivered messages per minute with hardware comparable to one modern server machine. Many built-in features can help to build an attractive real-time application in a limited time. Centrifugo provides different types of subscriptions, hot channel history, instant presence, RPC calls. There is also the possibility to proxy WebSocket events to the application backend over HTTP or GRPC and more.
    Downloads: 1 This Week
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  • 24
    Estuary

    Estuary

    A custom IPFS/Filecoin node that makes it easy to pin IPFS content

    A custom IPFS/Filecoin node that makes it easy to pin IPFS content and make Filecoin deals. We're excited to have you try out Estuary! Estuary is a reliable way to upload public data onto Filecoin and pin it to IPFS. As a developer, you have probably used API keys before. Estuary provides a unique identifier used to authenticate a user, developer, or calling program to an application programming interface we have created. If you don't know what an API key is, this tutorial will be challenging for you, but you can reach out to us if you're stuck. API keys are the standard way to authenticate a project with an API rather than a human user. It is also important you understand how to protect your API key/secrets from bad actors and abuse. If this concept is foreign to you, you might be better off just using https://estuary.tech and storing data through our website.
    Downloads: 1 This Week
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  • 25
    Hydra Booster

    Hydra Booster

    A DHT Indexer node & Peer Router

    A new type of DHT node designed to accelerate the Content Resolution & Content Providing on the IPFS Network. A (cute) Hydra with one belly full of records and many heads (Peer IDs) to tell other nodes about them, charged with rocket boosters to transport other nodes to their destination faster. Only run a hydra-booster on machines with public IP addresses. Having more DHT nodes behind NATs makes DHT queries in general slower, as connecting in generally takes longer and sometimes doesn't even work (resulting in a timeout). The total number of heads a single Hydra can have depends on the resources of the machine it's running on. To get the desired number of heads you may need to run multiple Hydras on multiple machines.
    Downloads: 1 This Week
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