$ ./pants help tools

External Tools
--------------

autoflake          The Autoflake Python code formatter (<https://github.com/myint/autoflake>).
                   Version: autoflake==1.4

black              The Black Python code formatter (<https://black.readthedocs.io/>).
                   Version: black==21.9b0

coursier           A dependency resolver for the Maven ecosystem.
                   Version: v2.0.16-169-g194ebc55c
                   URL template: <https://github.com/coursier/coursier/releases/download/{version}/cs-{platform}.gz>

coverage-py        Configuration for Python test coverage measurement.
                   Version: coverage[toml]>=5.5,<5.6

docformatter       The Python docformatter tool (<https://github.com/myint/docformatter>).
                   Version: docformatter>=1.4,<1.5

dockerfile-parser  Used to parse Dockerfile build specs to infer their dependencies.
                   Version: dockerfile==3.2.0

download-pex-bin   The PEX (Python EXecutable) tool (<https://github.com/pantsbuild/pex>).
                   Version: v2.1.54
                   URL template: <https://github.com/pantsbuild/pex/releases/download/{version}/pex>

flake8             The Flake8 Python linter (<https://flake8.pycqa.org/>).
                   Version: flake8>=3.9.2,<4.0

ipython            The IPython enhanced REPL (<https://ipython.org/>).
                   Version: ipython==7.16.1

isort              The Python import sorter tool (<https://pycqa.github.io/isort/>).
                   Version: isort[pyproject,colors]>=5.9.3,<6.0

mypy               The MyPy Python type checker (<http://mypy-lang.org/>).
                   Version: mypy==0.910

poetry             Used to generate lockfiles for third-party Python dependencies.
                   Version: poetry==1.1.8

pytest             The pytest Python test framework (<https://docs.pytest.org/>).
                   Version: pytest>=6.2.4,<6.3

scala              Scala programming language
                   Version: 2.13.6

scc                The Succinct Code Counter, aka `scc` (<https://github.com/boyter/scc>).
                   Version: 3.0.0
                   URL template: <https://github.com/boyter/scc/releases/download/v{version}/scc-{version}-{platform}.zip>

setuptools         Python setuptools, used to package `python_distribution` targets.
                   Version: setuptools>=50.3.0,<58.0

shellcheck         A linter for shell scripts.
                   Version: v0.7.1
                   URL template: <https://github.com/koalaman/shellcheck/releases/download/{version}/shellcheck-{version}.{platform}.tar.xz>

shfmt              An autoformatter for shell scripts (<https://github.com/mvdan/sh>).
                   Version: v3.2.4
                   URL template: <https://github.com/mvdan/sh/releases/download/{version}/shfmt_{version}_{platform}>

twine              The utility for publishing Python distributions to PyPi and other Python repositories.
                   Version: twine==3.4.2

Use `./pants help $tool` to get help for a specific tool.