Great list. Definitely found a few on here I didn't know about, but really needed.

On that, I will add the followings:

Automate

Have a great asset of tools to accelerate your flow. When coupled with the custom keyboard shortcuts, you become a speed master! I rerally love using "Reset symbol override and layer reordering function in it)

ashung.github.io/Automate-Sketch

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Layer Renamer

An awesome plugin that include a function to select layers by name using regex for advanced selections and wildcards to exclude artboards or groupes as exemple (Work well when you name them properly)

github.com/leonardpauli/layer-renamer

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Notebook Pro

A paid plugin that help you create specs for your design. (This quite useful for my for my on Abstract until they add that kind of feature)

marcosvid.al/sketch-notebook/

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Select Children

With a simple shortcut, select every element of the selected groups (you can do it continuously to get the lower item in nested groups)

github.com/jshuaf/select-children

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Scale all in place

A modified scale function but for many item relative to their own position

github.com/delighted/sketch-scale-all-in-place

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Select similar layer

Help you select every layers with the same property (colors, symbols, names, border, type, fonts, etc.)

github.com/wonderbit/sketch-select-similar-layers

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Craft

Might suck on many aspect, but it's "Data populator" plugin is damn great!

You know where to find it (I think)

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Paster

A great alternative to Craft Data populator module if you don't want to install Craft

github.com/Volorf/Paster

If you are using the WordPress then it's the best time for you to become more creative in the field. The https://www.levelbee.com/best-mirrorless-cameras-under-1000-dollars/ share the working link of this plugin.

The free site for the windows resolution to get online is https://www.windowsresolution.com/ for the free resolutions for the windows for free.

And BEWARE of Anima Auto Layout plugin because when used in a symbol, it create strange misalignment bugs with Invision with those symbols (it used to be the case for me). This is thew reason I now only uses Paddy that is annyway, much more conveniant on many aspects!