Artha - Artha is a handy thesaurus based on WordNet with distinct features like global hotkey look-up...

Headspace - Meditation made simple. Brilliant things happen in calm minds.

WordWeb - One-click lookup in any almost any Windows program; Hundreds of thousands of definitions and synonyms; The latest international English words; Works offline, or reference to Wikipedia and web references.

Synctuition Meditation Program - Synctuition Meditation Program is a world’s most leading meditation app that comes with brand new 3D sounds that enhance the quality of sleep significantly.

WordNet - WordNet® is a large lexical database of English.

Calm - Calm.com can help you reduce stress and increase calm.