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Top Rated Instant Messaging & Chat Software with Open source - Page 7

Last updated: October 2026

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185 software options

Weave logo

Customer communication and appointment scheduling solution

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Weave is the all-in-one customer communications and engagement platform for small and midsize business. From the first phone call to the final invoice and every touchpoint in between, Weave connects the entire customer journey.

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3CX logo

Web & mobile-based (Android, iOS) communications system.

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With 3CX’s integrated live chat feature your website and Facebook page visitors are able to start a chat or call in real-time. Your agents can answer them immediately from their 3CX web client or app. If chat is not enough, they can switch to a call or video in a single click.

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Microsoft Teams logo

Cloud collaboration platform for teams of all sizes

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Cloud-based collaboration platform unifying chat, video meetings, calling, and file sharing for teams of all sizes.

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MiVoice Business logo

AI-powered communications solutions for all industries

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MiVoice Business delivers a full communications solution with business phone features, chat and video messaging, audio and video conferencing, collaboration, and AI-integrated contact center capabilities that enables faster and more effective communications.

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Workplace from Meta logo

A simple and secure way to connect your organization.

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Workplace from Facebook is a secure enterprise social networking platform that allows co-workers to connect immediately via Work Chat instant messaging

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GoTo Meeting logo

Online meeting software with HD video conferencing

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GoToMeeting is an IM & chat tool that allows users to host an online meeting with high-definition video conferencing from their Mac, PC, iPad, iPhone or Android device, with up to 250 participants. Users can meet, screen share and chat via internet browser, mobile or desktop application.

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Webex Suite logo

Cloud-based unified collaboration suite for enterprises

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Webex Suite is a cloud-based collaboration platform consolidating meetings, messaging, calling, polling, webinars, events, and video.

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Microsoft Viva Engage logo

Enterprise Social Network (ESN) to connect and communicate

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Microsoft Viva Engage is a private enterprise social networking solution that enables employees to collaborate securely across time and distance. Microsoft Viva Engage provides a single, secure platform on which companies can share information, resources and business applications

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Bitrix24 logo

Cloud & on-premises workspace for all business sizes

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Find your colleagues quickly in address book. See if they are available, busy or absent with the help of online indicator. Use group chat. View chat history.

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Basecamp logo

Flexible project management and team communication tool

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Basecamp is a comprehensive project management software that helps teams stay organized and on track. Trusted by millions, Basecamp puts everything needed to get work done in one place, providing a structured way to manage projects, collaborate with clients, and communicate company-wide

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YakChat logo
(0)

Cloud-based communication software for Microsoft Teams

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YakChat is a cloud-based communication tool that helps teams integrate SMS/MMS, RCS, and WhatsApp messaging into Microsoft Teams and Webex.

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Messagenius logo
(0)

Corporate-grade self-hosted (on-prem/cloud) messaging.

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Messagenius is the enterprise messaging app that makes internal comms secure, compliant, smart and integrated.

It runs on clients’ private servers/clouds, boosts productivity with dedicated features, and integrates into any software in use.

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Woven logo
(0)

Manage day-to-day, multi-unit operations w/ one platform.

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Woven empowers franchisors and franchisees to maximize unit economics at scale by digitally unifying the frontline workforce, connecting the management of people, operations and facilities in a single app.

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Threema OnPrem logo
(0)

Threema OnPrem is a self-hosted business messaging solution.

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For businesses and organizations that place a high priority on data security and privacy, Threema OnPrem is the ideal corporate messaging solution.

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Nera ChatApp logo
(0)

Cloud AI analytics chat tool for regulated teams

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Nera ChatApp is a cloud-based chat interface for regulated industries that enables plain-English querying of sensitive structured data.

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Channel.io logo
(0)

Start the conversation and be customer driven.

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The live chat, team chat, CRM, marketing, and chatbot tools included in Channel.io's all-in-one business communications platform are made to help you identify critical customers and enhance customer engagement at every point of the customer funnel.

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MyHub Learning logo
(0)

AI powered learning management platform

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MyHub Learning Management System is an AI-powered platform that transforms learning concepts into complete training programs using prompts, documents, or web content. The system features intuitive course creation tools, comprehensive tracking capabilities, and support for multiple content formats including SCORM packages, videos, and PDFs, while enabling organizations to design custom learning pathways for onboarding and professional development.

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Live Chat Software logo
(0)

Software for managing customer queries and engagement

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Live Chat Software is designed to enhance customer experience and boost conversions by providing real-time support. With features like real-time messaging, customizable chat widgets, and a user-friendly interface, ensuring instant responses to customer queries.

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Bellbee logo
(0)

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convly logo
(0)

Chat with anyone on Teams from Slack

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convly lets you manage Microsoft Teams messages directly from Slack. Stay focused in Slack while clients or partners use Teams, no app to install on their side, no switching, no missed messages.

Setup takes 2 minutes.

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AtomChat logo
(0)

Chat and video calling software.

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AtomChat is specifically designed to add chat and video calling to your website to get your users talking.

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Brief logo
(0)

Cloud-based project management and collaboration tool

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Brief is a cloud-based project management software designed to help businesses in advertising, food and beverage, healthcare, and other sectors manage tasks, chats, and documents using Kanban boards.

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8seats logo
(0)

Cloud-based team messaging app for any business

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8seats is a cloud-based team messaging app for businesses of any size, offering Tables, Rooms, and Direct Messages across iOS.

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#One logo
(0)

Communication Software for Business

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#One is a secure communication software for simplifying communications and boost productivity, enabling seamless communication and collaboration through video meetings and conferencing, team chats, instant messaging and file sharing.

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Letsdial logo
(0)

Enhance customer service with a cloud contact center

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LetsDial is a mobile application that helps businesses streamline international calling processes. With its multiple features, it enables VoIP calls from blocked countries, seamless SMS receiving and sending, and offers virtual phone numbers from various nations.

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