Xmind - Xmind is a brainstorming and mind mapping application.

OKRs.app - Reach your personal goals with OKRs

MindManager - With MindManager, flexible mind maps promote freeform thinking and quick organization of ideas, so creativity and productivity can live in harmony.

Simple OKR - Track, measure and manage OKRs

MindMeister - Create, share and collaboratively work on mind maps with MindMeister, the leading online mind mapping software. Includes apps for iPhone, iPad and Android.

Focus - New Tab page that gives you a moment of calm and inspires you to be more productive.