Jira Assistant is a Google Chrome extension which provides functionality to manage jira related works in an efficient way.
https://chrome.google.com/webstore/detail/jira-assistant/momjbjbjpbcbnepbgkkiaofkgimihbii
Features Overview:
* Easily add worklog with drag & drop, copy features.
* Bulk import worklogs and issues
* View various reports related to worklog, sprint, estimates and custom generated report.
* Integrate with calendar to automatically generate worklog for meetings with single click.
* Lots of customization options including custom dashboards,Quick view, personalized skin & other settings.
* Integrate with multiple Jira server / account and switch between instances easily.