Best about nifi it's a powerful tool to use etl tool that we can transfer the data according to our requirement with different format data and it is to scalable and easy to use

Apache Airflow is very much helpful in orchestrating complex work flows. I really love the DAG based workflow orchestration, this helped me in breaking down large tasks into smaller tasks which made debugging easy. The best thing I like about airflow is its retry mechanism, If I want to run a specific task of a Dag or Dag failed at a particular task then I can just retry at the specific task instead of running entire Dag from start which really saved a lot of time. One more best thing about Airflow is its Dynamic Dag approach, When there is requirement to create multiple similar DAGs then we can create a specific template and use that template for all the similar DAGs which is really an amazing feature, this helped me a lot and reduced manual writing. I have been using Airflow for 1 Year and I feel that Airflow is the best platform for Orchestration Workflows. Customer support is very responsive and helpful.

OpenOffice comes in handy if you compare the file or program sizes as compared to MS Office that is it takes lesser space to install even and have all the basic options needed to handle make or edit a MS Word and or Even MS Excel Files. So, if you are in a hurry and unable to get an original MS Office Applications, OpenOffice is best suited and best thing it is open source so lesser or no charges in using.