Power users often ask how to extend Slack with plugins or automate it. The honest answer is that Slack uses apps and integrations rather than browser-style plugins — and it has a built-in tool for automation. Here is how it really works.
There is no browser-style plugin system in Slack. What people mean by Slack plugins are officially apps and integrations from the Slack App Directory. Instead of installing add-ons into the app, you connect approved apps to your workspace, and they post messages, send notifications or take actions inside Slack. The directory includes thousands of apps, from issue trackers and calendars to deployment and support tools, so most of what people want from "plugins" is available as an official integration.
Slack includes Workflow Builder, a built-in tool for automating routine work without writing code. You can build workflows that post a form when someone joins a channel, collect structured requests, send scheduled reminders, or kick off a series of steps from a button or emoji reaction. For teams, this removes a surprising amount of manual copying and chasing — the kind of small, repetitive tasks that quietly eat time.
Start with Workflow Builder and official directory apps. Most teams can automate notifications, approvals and reminders entirely through these, with no development required.
For bespoke needs, Slack offers an official developer platform and API to build custom apps and bots. This is the supported route for advanced automation — not unofficial plugins.
The takeaway for power users: Slack is genuinely extensible, just through a different model than "plugins". Lean on Workflow Builder for quick wins, official directory apps for connecting your tools, and the developer platform when you need something custom — and keep everything inside Slack's official, reviewable ecosystem.
What people call Slack plugins are officially called apps and integrations. Rather than installing browser-style plugins, you connect approved apps from the Slack App Directory to your workspace, so other tools can post and act inside Slack.
Slack includes Workflow Builder, a no-code tool for automating routine actions such as request forms, onboarding steps and scheduled reminders. For more advanced needs, apps and integrations from the directory connect Slack to your other systems.
Use only apps from the official Slack App Directory and review the permissions they request. Avoid unofficial "mods" or tools that ask you to paste tokens or bypass Slack, since those are a security and account risk.
Download Slack and explore Workflow Builder and the official App Directory.