List slash commands
 

Is there a way to list slash commands created by addons outside of the Ace community as addons like Niagara, Rock, and DueceCommander, take care of them.
Though many addons arent supported by the above and have slash commands.
So im looking for a way to do /list and see a list of the commnads and their intended addon, and if possivle explination of the command, similar to /help.

There is no way to do this for non-Ace mods since each author can code whatever slash commands they feel like; there is no schema to adhere to.

Best bet is to read the documentation that comes with the mod. If an author doesn't clearly document instructions, they've shot themselves in the foot.

Usually but not always, the addons name is a slash command.

SlashLib by Zax.

(it's great)

You have to know and enter in the commands first, but that could help for those who always forget them.

Nope, look at the edit interface... he does auto-discover most slashcommands (including the game defaults)

You're getting confused by his example screens.

Edit: Unless you meant that he doesn't auto-associate with the addon name, which you'd be right about :)
But he does produce a more or less full listing of slash commands available in the edit dialog.
Edit2: To clarify further he's iterating through SlashCmdList internal Blizz table which addons use to register their commands.
Anything that uses SlashCmdList["myaddonslash"] = MySlashHandler will be listed.