This great website Barons Toolbox is great for quickly checking your guild members stats, such as:
- current DEC balance
- total DEC donated since the player joined the guild
- average donation / week
- total DEC won in the last 100 fights
- winrate over last 50 battles
- days from last battle, so you can see if the player is active at all.
the overview looks like this:
you can also find individual players and get all sorts of info about them, and see all owned cards categorized in the different splinters:
This greatly helps me manage our guild :)