SC2Mapster

UPDATE: While we're on the topic, Shadow also released a cool Data duplicator tool.

Item Creator by ShadowDancer93

I came across this tool just recently that I thought was actually really cool. It works along the lines of templating data. Essentially what the program does, is it takes a pre-defined template of the item data, and changes it according to any specifications you set while creating the item. This is the beginning of something much bigger, as data templates can be used for many things, like hero creation, etc. I would stay tuned for more templating programs in the near future, as it's something i've been looking into as well, ;). Currently, this program can be used to create the following:

• button (with description, name and icon),
• unit (immortal, sellable)
• actor (w/o any bars, armor icons, etc.)
• item (with class, also new item have equip behavior and weapon set to item name, so you can add them just by creating behavior/weapon with name same as item)
• behavior (base for weapon, but can be created w/o it)
• weapon (melee or ranged)
• effect damage (for weapon)

  

Physics Engine Tutorial by LosTacos

This is a pretty sweet tutorial that will help you implement a Physics Engine into your map, if you choose to... so... those of you that are interested or in need, go check it out!