When comparing Blossom vs Hygger, the Slant community recommends Blossom for most people. In the question“What are the best online Kanban tools?” Blossom is ranked 13th while Hygger is ranked 14th. The most important reason people chose Blossom is:
An update is posted to the Slack channel every time a task is created, completed, moved, or commented upon.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Slack integration
An update is posted to the Slack channel every time a task is created, completed, moved, or commented upon.

Pro Simple & clean interface
Design focuses on clarity.
Pro Roadmap
Large-scale planning.
Pro Swimlanes
Adds another dimension to Kanban board.
Pro Eisenhower Matrix
Quick and descriptive approach to estimating and planning via Priority Chart.
Cons
Con No free plan
There is no free plan like for personal use and the minimal cost of $19/month might be prohibitive.
Con Slack integration is really basic
There is no way to interact with tasks in any way - new tasks can't be added, completed tasks can't be removed, tasks can't be assigned, etc. The integration only sends updates to the Slack channel. There is also no way to fine-tune what updates get posted to Slack.
