Power Thesaurus

Power Thesaurus is a free online crowdsourced thesaurus.
History.
Power Thesaurus was created by Alexander Radyushin in 2012 and developed by "Radyushin & Co".
The domain name for the thesaurus was registered on September 18, 2012. In 2015, the android and iOS app versions of the thesaurus were developed while its Chrome and Opera browser extensions were released in 2016.
Content.
The content of the thesaurus is user-editable and is also maintained by a team of full-time editors.