While many web-based office suites are closed source, there are many great alternatives available for open source enthusiasts to choose from.
Source: 3 open source alternatives to web office suites | Opensource.com
Intro to an open source productivity tracker | Opensource.com
Intro to an open source productivity tracker | Opensource.com https://opensource.com/business/16/7/fluxday-productivity-tracker
Never forget a task or billable hour with this cloud-based time-tracking tool – TechRepublic
Never forget a task or billable hour with this cloud-based time-tracking tool – TechRepublic http://www.techrepublic.com/article/never-forget-a-task-or-billable-hour-with-this-cloud-based-time-tracking-tool/#ftag=RSS56d97e7