FogBugz is an integrated web-based project management system featuring bug and issue tracking, discussion forums, wikis, customer relationship management, and evidence-based scheduling originally developed by Fog Creek Software.
FogBugz was re-branded as Manuscript at the end of 2017.
[1][2] On August 3, 2018 Manuscript was acquired by DevFactory.
[3] They renamed it back to FogBugz.
[4]