Assassin now has full support for all specializations in 5.0.5. Try out combat, it's really fun!

Claw Resources has a separate command from Assassin, it is /cres - not /assassin!
(commands are separate incase people want to lock or scale one but not the other, or want to run just Claw Resources or just Assassin)

Assassin is an addon for rogues of all specializations that simplifies gameplay and maximizes DPS by doing all the decision making for you.
Unlike most other addons, Assassin uses an advanced priority list developed by the people over at the SimulationCraft project and improved by myself for ease of use in actual gameplay.
It will calculate which ability would give you the highest DPS during the current combat situation.
The addon is comprised of three icons, left to right they are:

• The Previously Used Ability icon - Displays the last correct ability you used (to show you that you actually used it before the icon changed, can be disabled)
• The Best Choice Ability icon - Displays the best ability to use for maximum DPS during the current combat situation
• The Cooldown Ability icon - Displays when you should use an ability that is off the global cooldown or has a long cooldown (can be disabled)

Other features of Assassin includes:

• Glowing Ability Buttons - Your ability buttons glow when they become the best choice ability or a cooldown you should use
• Know When You Miss - A red border will appear on the previously used icon when your attack misses or gets dodged/parried
• Moveable, Lockable, and Scalable - Each icon can separately be moved to wherever you like on the screen, then locked or scaled to any size
• Resource Bars AddOn - No dependencies! Must be enabled within the AddOns menu on the character selection screen

Slash command for Assassin user configurable options: /assassin

Claw Resources is an included optional addon also for rogues (and those other two classes I play, y'know, druid and paladin) that displays vital information such as your combo points, anticipation stacks, energy, and global cooldown in a simple and elegant fashion. It will also play sounds when you reach a specified amount of combo points (default is 5). The sound files are random quotes from Devil May Cry, half are Dante, half are Vergil. I don't even play that game but my guild leader is obsessed with them and uses my addons so there you have it - her idea. I liked it.

Slash command for Claw Resources user configurable options: /cres and /clawres

F.A.Q.

• Where is it? I don't see it!
  Both addons hide themselves when you aren't targetting something you're able to attack. Try selecting a training dummy to move it around and such.
  
• Does this addon use lots of CPU/RAM resources?
  I don't think so. I've never seen it go above 200 KB myself, and if it does munch your CPU you may reduce the frequency of calculations. (with a slight reduction in accuracy)
  I doubt it uses even a hundredth of the CPU power Recount does.
  
• Why make an addon like this? There's already an addon that does this!
  Because my addon works how I need it to work, and is built on hours and hours of SimulationCraft research for maximum DPS.
  
• Does this addon recognize my legendary daggers?
  It used to, I left the code to detect a dagger proc in there just in case, however the new priority lists don't really need to check for them anymore.
  
• Is there a way to turn the rotation helper off? I only want the energy/combo point bars.
  As stated above, the resource addon is standalone (no dependencies). Just disable Assassin on the addons screen and keep Claw Resources on.
  
• Will it know when to AoE?
  No, sorry, that's up to you. It would require too much unnecessary coding to implement a feature that detects targets nearby.
  
• Can I get this addon for other classes?
  Yeah, search for Claw. It's Assassin's BFF Jill.

Not so F.A.Q.

• How can I donate to this amazingly useful addon that completely changed my life?
  Check out the donate tab on this page!

Known Bugs / Issues

• Unable to detect position around enemy, assumes behind - may add slash command to assume front for fights such as Ultraxion.