Application for managing achievements from retroachievements.org, which includes features such as:

Custom Achievement Management
Special Achievement Tracking
Missable Achievement Detection
Achievement and Progress Visualization
Customizable View
Achievement of the Week
Achievement of the Month
Achievement Trading
Event History
Player Following
Statistics Comparison - Versus Mode
Recent Activity
Comment Reading
Console Search
New Releases
Leaderboards
Favorites Management
Hash Information
Patch Downloads
FAQ System
Optimized Interface
Sharing System
Detailed View
Available in 46 different languages