tModLoader Mod List

http://forums.terraria.org/index.php?threads/.45055

Fast Start starts newly created characters with some gifts! You will be granted better than copper tools, weapons, gear and more!
Items given are randomly selected.

It's programmed as follows:
If you receive a platinum pickaxe, you can no longer get a platinum tier axe and hammer.
If you then get the next highest tier axe, which is gold, you can no longer get platinum and gold tier hammer!
This works the same for any other items so get, with some exceptions.
If you're lucky, you'll get both life AND mana crystals!

Can also grant things such as: slime staff, money trough, grappling hook and more!

Changelog for v0.5:
- You can no longer get Crystal Vile Shard as this is a hardmode item.
- Added Vilethorn as a replacement for Crystal Vile Shard.
- You can no longer get Diamond Ring as this item is worth a lot of money.
- You can now get Balloon Animal or Bundled Party Balloons as your vanity gifts.
- You will now get between 20 and 55 wood, stone blocks and torches.
- The amount of wooden arrows you can get is reduced by 100.
- The amount of throwing daggers and shurikens you can get is reduced by 10.
- If you are lucky, you can now also get a Wand of Sparking. That thing is dang hard to find sometimes.

http://forums.terraria.org/index.php?threads/class-based-rpg-mod.43901/

Choose a class at the start of the game, then gain stats and perks relevant to that class as you kill bosses. Check the homepage for details on each class.

Each class has an active ability, by default bound to 'Q'.

Why settle for the run of the mill magic mirror or ice mirror?

More mirrors adds two new types of mirrors, each with a unique effect.
Only with the radiation of a teleporter, can these mirrors be made.

http://forums.terraria.org/index.php?threads/dust-and-sound-catalogue-2.42370/

Modding tool which provides a quick way to view dust and sound effects ingame. Craft books with dirt.
Dust: Scroll through listed dust types. Dust is displayed with a scale of 1 and a velocity of 5 in the respective directions. (!) represents dusts that emit light and (.) represents dust that glows or emits very faint light.
Sound: Change both sound effect type and style type. Sound is played at the your location.
See book tooltips for further instructions on use.

NOTE: As of tModLoader 0.9+, sounds are accessed via SoundID - names have been changed to reflect the names given there, where applicable.

Particle 43 - The Shiny Particle

Particle colour and scale appears to influence the intensity and colour of light emitted. The particle doesn't show unless at least one colour value is set to 255.
Initially spawns with light currently available on that tile, meaning it won't appear in darkness (like Mithril Armour's effects).
Usually used with Main.dust[dustIndex].fadeIn with a smaller inital scale, to due to lighting.

Gravity Enabled:
Doesn't slow down, ignores gravity.
Gravity Disabled:
Slows down and disappears faster.

HyperTerraria ( HyperT ) is an expansion-type mod that makes vanilla/modded terraria less tedious. Currently, I am working on post-moonlord content.
This mod doesn't change / add any new worldgen, so you can drop it safely in your modpack.
For those who played the legacy version of HyperT, note that the mod is being rebalanced as it is way too OP.

http://forums.terraria.org/index.php?threads/hotbar-swapper.19089/

With this, you can press Caps Lock to swap the top row of your inventory with the second row, and you can double tap a number on your keyboard to swap one item in the corresponding item slot with the one below.
The key for swapping the whole row can now be set in Keybindings. If Caps Lock doesn't work, check that it is bound in keybindings first.
You can also toggle the option to swap an item with just a single button press by pressing O. With this enabled, you will need to click on the items in your hot bar or use your mouse wheel to select different items in your hotbar.

https://forums.terraria.org/index.php?threads/sin-costans-collection-of-fun-projectiles-once-again.39887/

This mod is the experimentation and implementation of projectile concepts. Test these out either by waiting for the merchant and buying it if you feel like getting them in the legit way, or just craft them with a single block of dirt. Please post a comment on the thread page on these experimental items!
Changelog for v5:
- Now can be played on the latest version of tModLoader!

http://forums.terraria.org/index.php?threads/terrarian-dreamkeepers.4725/

Now you can play as the main cast from the Dreamkeepers graphic novels.
Get started by crafting an artists desk from wood, ink and a harpy feather at a sawmill and place it in a vacent house.
For more info on the Dreamkeepers graphic novel, just Google 'Dreamkeepers'.

http://forums.terraria.org/index.php?threads/vanilla-tweaks-a-mod-with-no-content.37443/

Vanilla Tweaks is a small mod that changes and rebalances some things from Terraria.
Notable changes include:
-Cool set bonuses for weak armor/vanity sets, such as Eskimo, Pharaoh, Obsidian, Gladiator etc.
-Faster Extractinator
-Some items are renamed (Cobalt Shield => Guardian's Shield, Sandstone Slab => Sand Slab)
-Autoswing for Night's Edge, True Night's Edge and True Excalibur
And many other things! Visit the mod's homepage for the full list.

NOTE: you can disable/enable features as you wish! Go to your Mods menu and click on the config icon.

Credits:
-Pop000100 for help with various tweaks and updating the mod
-Hulvdan for the Extractinator tweak code
-lots of people for their suggestions

http://forums.terraria.org/index.php?threads/longbowsftw-hardmode-ore-counterparts-for-repeaters.37052/

Longbows FTW is a small mod that does two things:
-It adds Longbows made from Hardmode ores (including Chlorophyte and Hallowed). They are non-Mechanical equivalents to Repeaters.
-It makes Repeaters shoot slower, but with more damage, velocity and knockback. This way there is more variety for arrow-shooting weapons.
I hope you enjoy it!

Thanks to Dota for the Portuguese translation.

https://tmodloader.net/

Learn how to mod with tModLoader by exploring the source code for this mod.