Why look beyond Slack

Slack has established itself as a prominent platform for internal team communication and cross-organizational collaboration, offering a robust suite of features including channels, direct messaging, file sharing, and extensive third-party integrations. Its Workflow Builder and Huddles features facilitate asynchronous and synchronous communication, respectively. However, organizations may consider alternatives for several reasons. Cost can be a significant factor, particularly for large teams, as Slack's paid plans scale with user count. Some users report concerns regarding notification fatigue or the perceived complexity of managing numerous channels in larger deployments. Furthermore, specific compliance requirements or the desire for deeper integration within an existing software ecosystem, such as Microsoft 365 or Google Workspace, can drive the search for a platform that offers more native compatibility. Performance on lower-spec hardware or specific mobile environments can also influence user experience, leading some to explore lighter-weight or more optimized solutions. Finally, teams seeking a different user interface or a more specialized feature set for particular use cases, like gaming communities or open-source projects, might find alternatives better suited to their needs.

Top alternatives ranked

  1. 1. Microsoft Teams — Integrated communication within the Microsoft 365 ecosystem

    Microsoft Teams is a unified communication and collaboration platform that combines persistent workplace chat, video meetings, file storage, and application integration. Developed by Microsoft, it is deeply integrated with the Microsoft 365 suite, allowing seamless access to Word, Excel, PowerPoint, and Outlook directly within the Teams interface. This makes it a strong contender for organizations already invested in Microsoft’s ecosystem, offering a consolidated environment for productivity and communication. Teams supports various communication methods, including one-on-one chats, group channels, and scheduled video conferences with features like screen sharing and virtual backgrounds. It also offers extensive external collaboration capabilities, allowing users to interact with individuals outside their organization. Its enterprise-grade security and compliance features, including E3 and E5 licenses, are designed to meet the needs of large organizations.

    Best for: Organizations heavily invested in Microsoft 365, enterprises requiring robust security and compliance, and hybrid work environments needing integrated meeting and collaboration tools.

    Learn more: Microsoft Teams profile | Microsoft Teams official site

  2. 2. Google Chat — Seamless communication for Google Workspace users

    Google Chat is a communication service that provides direct messaging, group conversations, and spaces for team collaboration. It is a core component of Google Workspace, integrating natively with other Google services such as Gmail, Google Calendar, Google Drive, and Google Meet. This deep integration offers a cohesive experience for businesses already using Google Workspace for their productivity needs, allowing users to share files, schedule meetings, and collaborate on documents without leaving the chat interface. Google Chat emphasizes a streamlined user experience and offers features like smart replies, search functionality, and threaded conversations. It supports external collaboration and provides security features consistent with Google's enterprise offerings, including data encryption and administrative controls. Its availability across web, desktop, and mobile platforms ensures accessibility for diverse work setups.

    Best for: Businesses and educational institutions fully integrated into the Google Workspace ecosystem, small to medium-sized teams prioritizing ease of use and native Google service integration.

    Learn more: Google Chat profile | Google Chat official site

  3. 3. Discord — Community-centric communication with voice and video capabilities

    Discord is a communication platform initially designed for gamers but has evolved into a versatile tool for various communities and teams. It offers robust voice, video, and text chat functionalities organized into servers, which can contain multiple channels for different topics. Discord's strength lies in its real-time audio and video capabilities, making it suitable for live discussions, online events, and casual voice communication. Users can create custom roles, moderate content, and integrate bots to automate tasks or enhance functionality. While it lacks some of the direct business-oriented integrations found in platforms like Slack or Teams, its flexibility and strong community features make it an attractive option for informal teams, open-source projects, and communities that prioritize real-time interaction. Discord also offers a free tier with substantial features, making it accessible for budget-conscious users.

    Best for: Gaming communities, open-source projects, informal teams, educational groups, and users prioritizing real-time voice and video communication with extensive customization.

    Learn more: Discord profile | Discord official site

  4. 4. Salesforce — Enterprise CRM with integrated collaboration features

    Salesforce is a comprehensive cloud-based CRM platform that offers a broad range of services, including sales, service, marketing, and analytics. While primarily known for its customer relationship management capabilities, Salesforce also incorporates collaboration features through its various clouds and integrations, notably with its acquisition of Slack. For organizations already using Salesforce, the platform provides a unified environment to manage customer data, track sales processes, and collaborate on related tasks. Its collaboration tools often focus on internal team communication related to customer accounts, projects, and sales opportunities, allowing sales and service teams to share information and coordinate efforts directly within the CRM. Salesforce's extensive customization options and developer ecosystem allow for tailoring the platform to specific business workflows, making it suitable for large enterprises with complex operational needs.

    Best for: Enterprises deeply invested in the Salesforce CRM ecosystem, sales and service teams requiring collaboration directly tied to customer data, and organizations needing highly customizable business solutions.

    Learn more: Salesforce profile | Salesforce official site

Side-by-side

Feature Slack Microsoft Teams Google Chat Discord Salesforce (with Slack/CRM focus)
Primary Focus Team Messaging & Collaboration Unified Communication & Collaboration Integrated Google Workspace Chat Community & Real-time Communication CRM with Integrated Collaboration
Core Integrations Thousands of apps, custom bots Microsoft 365, Azure, Power Platform Google Workspace (Gmail, Drive, Meet) Bots, gaming platforms, webhooks Salesforce Clouds, Slack (post-acquisition)
Video/Voice Calls Huddles, native calls, integrations Native meetings, robust video conferencing Native Google Meet integration Native voice & video channels Integrations, some native (e.g., Service Cloud)
File Sharing Yes, with cloud storage integrations Yes, OneDrive/SharePoint integration Yes, Google Drive integration Yes Yes, Salesforce Files, integrations
Workflow Automation Workflow Builder, API Power Automate, API Bots, API Bots, webhooks Flow, Process Builder, Apex, API
External Collaboration Slack Connect Guest access, shared channels External chat, spaces Guest access, public servers Partner Community, customer portals
Compliance & Security SOC 2, ISO, GDPR, HIPAA Enterprise-grade, extensive certifications Enterprise-grade, Google security Standard, some advanced for paid tiers Enterprise-grade, industry-specific
Free Tier Available Yes Yes (limited) Yes (with Google Account) Yes No (trial available)
Starting Paid Price (approx.) $7.25 user/month (annual) Included with Microsoft 365 plans Included with Google Workspace plans $2.99 user/month (Nitro Basic) Varies greatly by CRM edition

How to pick

Selecting an alternative to Slack involves evaluating your organization's specific needs, existing technology stack, budget, and desired feature set. Consider the following decision-tree style guidance:

  • Are you heavily invested in a specific productivity suite?

    • If yes, Microsoft 365: Microsoft Teams offers the most seamless integration with Word, Excel, PowerPoint, Outlook, and SharePoint. It's ideal for organizations already using these tools extensively and seeking a unified communication and collaboration hub within that ecosystem.
    • If yes, Google Workspace: Google Chat provides native integration with Gmail, Google Drive, Google Calendar, and Google Meet. This is optimal for teams that rely on Google's suite for daily operations and want a communication tool that feels like a natural extension.
  • Is real-time voice and video communication paramount, or are you building a community?

    • If yes: Discord excels in real-time voice and video chat, making it suitable for gaming communities, open-source projects, or teams that prioritize spontaneous audio/video communication. Its server and channel structure, coupled with extensive bot support, allows for highly customized community experiences.
  • Do you require deep collaboration within a CRM platform, especially Salesforce?

    • If yes: Salesforce, particularly with its integrated collaboration features and the acquisition of Slack, is the logical choice. It allows sales, service, and marketing teams to collaborate directly on customer accounts and projects within the CRM environment, streamlining workflows for customer-centric operations.
  • What are your budget constraints?

    • If a robust free tier is critical: Discord offers extensive features on its free tier, making it highly accessible for small teams or communities with limited budgets. Slack and Microsoft Teams also offer free tiers, but with more significant limitations compared to their paid counterparts.
    • If cost-effectiveness within an existing suite is key: Microsoft Teams and Google Chat are often included or deeply integrated into their respective paid productivity suites (Microsoft 365 and Google Workspace), potentially offering better value if you're already subscribing to those services.
  • What are your compliance and security requirements?

    • If enterprise-grade security and compliance (e.g., HIPAA, GDPR, SOC 2) are non-negotiable: Microsoft Teams and Salesforce are typically designed with extensive certifications and administrative controls to meet stringent corporate and regulatory demands. Slack also offers robust compliance features on its Business+ and Enterprise Grid plans.
  • How important are third-party integrations and developer tools?

    • If extensive integrations and a rich developer ecosystem are a priority: Slack has a vast app directory and a well-documented API, making it highly extensible. Microsoft Teams and Google Chat also offer growing integration marketplaces and developer tools, especially within their respective ecosystems. Discord provides a strong bot API for community customization.