Alternatives to Slack
Slack is a communication server with a reliability score of 91/100. If it isn't the right fit, these are the closest vetted alternatives currently on MCPfinder, sorted by reliability score, not marketing budget.
Send, read, and search Slack messages from your agent.
Secure file operations with configurable access controls.
Issues, PRs, code search, releases — the full GitHub surface.
Read-only SQL queries against a Postgres database.
How we pick alternatives
An alternative is any MCP server that would plausibly replace Slack for at least one common use case in the communication space. We rank by reliability score: a public 0–100 rating based on repository health, release cadence, documentation quality, and maintainer responsiveness. We don't sell placement in this list.