docs: Add comparison with Poe the Poet

Issue-36: #36

Author: pawamoy

docs/index.md

@@ -74,3 +74,21 @@ when you have complex things to run.
 
 Also Task is written in Go so you won't be able to specify
 it in your Python dev-dependencies.
+
+### [Poe the Poet](https://github.com/nat-n/poethepoet)
+
+Poe the Poet, or `poe`, lets you declare tasks in pyproject.toml.
+The comparison is similar to [Task's](#task): declarative language only gets you so far.
+duty is fully based on Python, and provides you with batteries to control
+the output, the exit code, etc. While Poe the Poet lets you call Python functions,
+the user would have to re-implement these batteries themselves.
+
+Poe the Poet and duty can be used together though, with Poe tasks calling duty.
+But that feels like an additional complexity layer for the single benefit
+of declaring your task directly in pyproject.toml.
+
+```toml
+[tool.poe.tasks]
+test = "duty test"
+docs = "duty docs"
+```