Neither Bitbucket nor Zepel offers a free trial.
Bitbucket is designed for Large Enterprises, Medium Business and Small Business.
Zepel is designed for Medium Business and Small Business.
Pricing for Bitbucket Starts at $3/User/Month whereas for Zepel Starts at $5/User/Month when Billed Yearly.
Some top alternatives to Bitbucket includes Assembla, GitLive, Codegiant, GitHub, GitLab, CircleCI, ChangeHub, XetHub and GetGit.
Some top alternatives to Zepel includes ProdPad, ProductPlan, Jira, productboard, Productroad, Next Please, Trello, Asana, Teamwork and Height.