Slack
Slack Technologies (Salesforce) · Collaboration & communication
Channel-based team messaging platform from Salesforce with threads, huddles, canvases, workflow automation and an extensive bot and app API
ProprietaryFreemiumPaidNov 2, 2026
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Zoom
Zoom Communications, Inc. · Collaboration & communication
Video meetings and webinar platform, now packaged as Zoom Workplace with team chat, phone, whiteboard, AI Companion and developer APIs and SDKs
ProprietaryFreemiumPaidNov 2, 2026
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