On the Maatwebsite Medium.com site they've posted a retrospective of their last several years of work on the Laravel Excel Open Source package.
Laravel Excel (https://github.com/Maatwebsite/Laravel-Excel) turned 4 years last November and has reached almost 6 million Packagist downloads. A good time to reflect on 4,5 years of open source development.
The article starts with a bit of history behind the initial development of the package as a simple wrapper around PHPExcel. It covers some of the initial syntax of the tool and features included from the start. The project moved on to v1.x with a complete rewrite and then into v2.x with support for the Laravel v5.x framework releases. It then talks about their "support conundrum" as they reached 1 (then, later, 6) million package downloads. They cover some of the usual project support issues, a reduction in their work on the package and how they worked to "fix it for everyone".
The post also talks about their "open source rehab" and how it changed their view from its recent "because 1 million people use it" back to making a difference in developers' lives. It finishes up talking about some of the "lessons learned" in how it worked with Laravel, a retrospective on its current state and a look forward at Laravel Excel v3.0.