Factorio

Mods

https://github.com/technicalfactorio/technicalfactorio/tree/master/combinators

Minor

https://mods.factorio.com/mod/Concretexture

https://mods.factorio.com/mod/even-distribution

https://mods.factorio.com/mod/Nanobots

https://mods.factorio.com/mod/clock

https://mods.factorio.com/mod/Todo-List

https://mods.factorio.com/mod/pump

Long/far reach

https://mods.factorio.com/mod/alien-biomes

Technical

FNEI

HELMOD

fCPU

https://mods.factorio.com/mod/PickerDollies

Trains

https://mods.factorio.com/mod/LogisticTrainNetwork

https://mods.factorio.com/mod/LTN_Combinator

https://mods.factorio.com/mod/Automatic_Train_Painter

https://mods.factorio.com/mod/FluidWagonColorMask

https://mods.factorio.com/mod/automatic-station-painter

https://mods.factorio.com/tag/trains/3?version=1.0

https://mods.factorio.com/mod/BlueprintLab_design <- Probably worse than blueprint editor

Compact (X-or) Lookup Table, Factorio Combinator Tutorial (in a minute)

https://christoph-frick.github.io/factorio-blueprint-tools/

https://mods.factorio.com/mod/MultipleUnitTrainControl