https://buffer.com/resources/engineering-report-january-2017/
Building with Atomic Design, Instagram Grid Preview Coming to iOS and Lots of Open Source
Work is beginning on a Buffer components library, which is a collection of small, simple and completely tested user interface components like buttons, etc.
instagram grid previewatomic designlots ofopen sourcebuilding
https://www.gridpeek.com/
Free Instagram Grid Planner and Feed Preview Tool
Plan your Instagram feed before posting. Drag, reorder, and preview posts in seconds, then download your grid layout. Free, no signup required.
instagram grid plannerfreefeedpreviewtool