Start with the reason for leaving
Slack is used for teams that need chat, channels, and workflow apps. A switch is justified only when a named workflow, cost, control, service, or portability constraint outweighs the disruption of change. Use this shortlist to select candidates for the same buyer-defined tests.
| Option | Relationship | Useful when | Evidence to collect |
|---|---|---|---|
| Calendly | Adjacent workflow | teams coordinating external meetings | seat-based scheduling plans; test export and migration. |
| Microsoft Teams | Adjacent workflow | Microsoft 365-centered organizations | bundled and standalone collaboration pricing; test export and migration. |
| RingCentral | Adjacent workflow | teams replacing legacy phone systems | user-based unified communications pricing; test export and migration. |
| Zoom | Adjacent workflow | teams that prioritize meetings and webinars | host-based communications pricing; test export and migration. |
Shortlist method
Start with must-have workflows, then score each vendor against pricing transparency, rollout effort, security controls, reporting needs, and exit options.
Shortlist around the job, not the brand
These options overlap with meetings, messaging, scheduling, and business communications, but they are not interchangeable. Write one test for every required job.
- The primary job: messaging, meetings, appointment booking, or telephony.
- Guest access, recording, retention, routing, and administrator controls.
- Host, user, phone number, usage, and add-on pricing rules.
- Calendar, identity, crm, support, and compliance integrations.
Migration proof to request before cancellation
Options are grouped by overlapping buyer workflow. Verify current capabilities, pricing, and contract terms through the linked official sources and a representative workflow test. See the comparison methodology.