NEI 1.4.7.4 (Minecraft 1.4.7)

NEIPlugins-1.0.4.7.jar
Compatible with CCC 0.8.1.6.

NEI 1.4.5 (Minecraft 1.4.6)

NEIPlugins-1.0.4.5.jar (mirror)
All plugins for NEI now together.

Buildcraft 3.3.0
Show assembly table recipes and Combustion Engine fuels and coolants.

IndustrialCraft 2 1.112 Open Beta
Added tooltip that show how many EU you can get from burn item in Generator (can be disabled in NEI options).
Warning: this plugin uses client-side IC2 config option "energyGeneratorBase", server can have different value.
It's also show recipe of UU-Matter in Mass Fabricator.

Railcraft 6.14.0

Forestry 1.7.0.3
This plugin show squeezer, centrifuge, carpenter, fermenter, moistener, still and thermionic fabricator recipes.

Forge 6.5.0+
This plugin is add ability to see all possible containers for each liquids. Also you can see their names in Liquid Dictionary, check if item registred in Ore Dictionary and browse Ore Dictionary (but it disabled by default, you need activate this ability in NEI options).

NEI 1.4.2.10 (Minecraft 1.4.5)

NEIPlugins-1.0.3.6.jar

Buildcraft 3.2

Railcraft 6.9.1

IndustrialCraft 1.111

Forestry 1.6.2.0

NEI 1.4.1 (Minecraft 1.4.2)

Buildcraft 3.2: NEI_BuildcraftPlugin 1.2.0.8.zip
Show assembly table recipes and Combustion Engine fuels and coolants.

IndustrialCraft 2 1.108 Open Beta: NEI_IC2_Burn_1.0.zip
It show how many EU you can get from burn item in Generator (can be disabled in NEI options). Can be used to compare durations of burning items in other furnaces (useful to detect best fuel for boilers from Railcraft).
Warning: this plugin uses client-side IC2 config option "energyGeneratorBase", server can have different value.

Railcraft 6.7.0: NEI_RailCraftPlugin 1.5.0.10.zip

Forestry 1.6.0.0pre5: NEI_ForestryPlugin 1.3.0.27.zip
This plugin show squeezer, centrifuge, carpenter, fermenter, still and thermionic fabricator recipes.

Forge Ore Dictionary: NEI_OreDictionary 1.1.0.0.zip
This plugin show if item registred in Ore Dictionary (simply look usage of item). Can be useful for modders. Screenshots

NEI 1.4.0 (Minecraft 1.3.2)

Buildcraft 3.2: NEI_BuildcraftPlugin 1.1.0.7.zip
Show assemlby table recipes and Combustion Engine fuels and coolants.

IndustrialCraft 2 1.106: already part of coming IndustrialCraft 2 1.107.

IndustrialCraft 2 1.106-1.107: NEI_IC2_Burn_1.0.0.zip
It show how many EU you can get from burn item in Generator (can be disabled in NEI options). Can be used to compare durations of burning items in other furnaces (useful to detect best fuel for boilers from Railcraft).
Warning: this plugin uses client-side IC2 config option "energyGeneratorBase", server can have different value.

Railcraft 6.0.0 - 6.4.0: NEI_RailCraftPlugin 1.4.0.9.zip

Forestry 1.5.0.2: NEI_ForestryPlugin 1.2.0.28.zip
This plugin show squeezer, centrifuge, carpenter, fermenter, still and thermionic fabricator recipes.