Slack

Remote and hybrid teams that run their workflows through integrations and need chat as the connective layer between their SaaS tools

Communication ★★★★☆ 4.4/5 Free plan available, Pro from $8.75/user/month Visit Website

Slack Connect lets you create shared channels with up to 250 external organizations, replacing email for vendor and client comms
Workflow Builder allows non-technical users to create multi-step automations with forms, messages, and third-party app actions — no code needed
App Directory has 2,600+ integrations with deep native hooks into tools like Jira, Salesforce, GitHub, and Google Workspace
Huddles launch instant audio calls within any channel or DM with screen sharing and live drawing, replacing ad-hoc Zoom meetings
Canvas feature provides persistent, editable docs pinned to channels for SOPs, onboarding guides, and project briefs

Free plan limits searchable message history to 90 days, effectively erasing institutional knowledge for non-paying teams
No native project management — everything beyond messaging requires a third-party integration like Asana or Linear
Per-user pricing means large organizations (500+ seats) pay $4,375+/mo on Pro with no volume discount on self-serve plans
Huddles support only 50 participants and lack breakout rooms, recording, or calendar scheduling found in Zoom or Teams

Key Features

Channels with topic-based organization, bookmarks bar, and pinned posts for team context
Threads that keep side conversations contained without cluttering the main channel feed
Slack Connect for shared channels with external partners, vendors, and clients
Workflow Builder with form steps, conditional logic, and connectors to 30+ apps
Canvas for persistent rich-text docs pinned to channels or DMs
Slack AI for channel summaries, thread recaps, and intelligent search across message history
Enterprise Grid with multi-workspace org management, DLP, eDiscovery, and HIPAA compliance