These mods follow a "give credit and maybe link to the page" permission template:
-Credits to DaftPVP and bspkrs for the bspkrsCore and Treecapitator Mods. They can be found at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1281180-daftpvfs-mods-treecapitator-crystalwing
-Credits to chicken_bones for the famous, incredible Not Enough Items mod. Oh yeah, and CodeChickenCore, Ender Storage, Wireless Redstone, Chicken Chunks, and Translocator mods too. CB's mods are available at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1279956-chickenbones-mods
-Credits to iChun for the iChunUtil, Mob Amputation, Bee Barker, Streak, Portal Gun, Gravity Gun, AND Morph mods. Check 'em out at http://ichun.us
-Credits to MrCrayfish for his impeccable Furniture Mod, which can be downloaded at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1282349-mrcrayfishs-furniture-mod-v3-4-8-the-kitchen
-Credits to the Metallurgy 4 team for, well, Metallurgy 4 (and it's core mod). They can be found at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1295123-metallurgy-4
-Credits to CrazyPants for EnderIO and EnderCore. His fantastic work can be found at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1291161-1-7-1-6-ender-io-how-many-pipes-in-one-block
-Credits to Mark719 for his Magical Crops mod.
-Credits to mssodin28 and GnRSlash for contributing to the Enchanting Plus mod. Credits to Qizzok and xkyouchoux for originally developing the Enchanting Plus mod. The mod's source code is available at https://github.com/odininon/EnchantingPlus, and the mod itself at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1286469-enchanting-plus
-Credits to RWTema for his Dense Ores mod. It can be found at http://www.curse.com/mc-mods/minecraft/224942-dense-ores
-Credits to Aroma1997 for the Aroma1997Core and the Mining World
-The licence for SpaceCore, which includes redistribution permissions, can be found at https://github.com/spacechase0/SpaceCore/blob/master/LICENSE.txt
-The licence for TextFormatting, which includes redistribution permissions, can be found at https://github.com/spacechase0/TextFormatting/blob/master/LICENSE.txt
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Permissions will probably never exist for:
-Lucky Blocks
-OptiFine
(You can add these manually, of course)
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These mods required special permissions for me to add. The permissions are:
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All other mods followed a "just do it" or "do it and PM the dev" template.
-Credits to DaftPVP and bspkrs for the bspkrsCore and Treecapitator Mods. They can be found at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1281180-daftpvfs-mods-treecapitator-crystalwing
-Credits to chicken_bones for the famous, incredible Not Enough Items mod. Oh yeah, and CodeChickenCore, Ender Storage, Wireless Redstone, Chicken Chunks, and Translocator mods too. CB's mods are available at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1279956-chickenbones-mods
-Credits to iChun for the iChunUtil, Mob Amputation, Bee Barker, Streak, Portal Gun, Gravity Gun, AND Morph mods. Check 'em out at http://ichun.us
-Credits to MrCrayfish for his impeccable Furniture Mod, which can be downloaded at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1282349-mrcrayfishs-furniture-mod-v3-4-8-the-kitchen
-Credits to the Metallurgy 4 team for, well, Metallurgy 4 (and it's core mod). They can be found at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1295123-metallurgy-4
-Credits to CrazyPants for EnderIO and EnderCore. His fantastic work can be found at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1291161-1-7-1-6-ender-io-how-many-pipes-in-one-block
-Credits to Mark719 for his Magical Crops mod.
-Credits to mssodin28 and GnRSlash for contributing to the Enchanting Plus mod. Credits to Qizzok and xkyouchoux for originally developing the Enchanting Plus mod. The mod's source code is available at https://github.com/odininon/EnchantingPlus, and the mod itself at http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/1286469-enchanting-plus
-Credits to RWTema for his Dense Ores mod. It can be found at http://www.curse.com/mc-mods/minecraft/224942-dense-ores
-Credits to Aroma1997 for the Aroma1997Core and the Mining World
-The licence for SpaceCore, which includes redistribution permissions, can be found at https://github.com/spacechase0/SpaceCore/blob/master/LICENSE.txt
-The licence for TextFormatting, which includes redistribution permissions, can be found at https://github.com/spacechase0/TextFormatting/blob/master/LICENSE.txt
-----
Permissions will probably never exist for:
-Lucky Blocks
-OptiFine
(You can add these manually, of course)
-----
These mods required special permissions for me to add. The permissions are:
-----
All other mods followed a "just do it" or "do it and PM the dev" template.