Professionally I use Jira, there's really notting quite like it. Personally I tend to use Google Spreadsheet, it allows for collaboration on small teams. Some

Professionally I use Jira, there's really notting quite like it. Personally I tend to use Google Spreadsheet, it allows for collaboration on small teams. Sometimes I use a plaintext file in a git-repo (usually formated as a markdown or org-mode file).