pypyr is described as 'open source task-runner for automation pipelines. pypyr lets you script sequential tasks in a simple yaml format with conditional execution, loops, error handling and retries for any step in your pipeline' and is an app in the Development category. There are more than 25 alternatives to pypyr for a variety of platforms, including Windows, Linux, Mac, BSD and Self-Hosted solutions. The best alternative is AutoIt, which is free. Other great apps like pypyr are Jenkins (Free, Open Source), Tasker (Paid), Actiona (Free, Open Source) and Gulp.js (Free, Open Source).
doit comes from the idea of bringing the power of build-tools to execute any kind of task. People often compare doit to tools like make, grunt, rake, scons, snakemake. They appreciate doit strong features, flexibility, simplicity of authoring and ease of use.