I've been using Open Office Writer and Calc for years. I like the features and user interface. Some features are better than features found in Microsoft Word. For example, you can add multiple columns to a table at once; this is not in Word and it's very convenient and helpful feature when working on a table, and I find changing the text from all caps to no caps etc. easier for some reason in Writer although they are almost identical. Almost everything that is in Word is in Writer. Besides the options of the search function, I have never felt like there was a feature that is in Word that I needed and didn't have in Writer. In Writer, the one issue is that Search feature is very difficult to learn to use. If you want to do anything slightly complicated, you have to go learn specifically how to enter it and that can take some time digging online. I have never figured out how to replace two paragraph marks with one, as an example. I do like Microsoft Excel better than Calc because I find it a lot easier to figure out how to write functions using the prompts in Excel than in Calc; I find trying to do more complex functions in Calc extremely frustrating and infuriating.
This latest version has been crashing a lot. In the last few weeks, I've lost a lot of work. When it crashes, you can lose up to 15 minutes of writing, depending on when it last auto-saved. This has been painful as I've had to re-write some important documents that I had already gotten mostly written. What happened just now is I included a word - a science word - that was not in the dictionary. I right clicked on the word and added it to the dictionary so it would not be underlined as a spelling error. The program hung. I panicked as I had just written a lot so I clicked save. The program froze - and I lost 3 documents. But this time, I could not shut OpenOffice down. Not even by going into Task Manager and clicking End Task would it shut down. I waited probably 45 minutes and then shut down the computer so that it would terminate OpenOffice. Now my laptop won't boot up and goes to a black screen. Now, maybe my laptop has an issue. This could be the case. But, I resent the fact that, whatever issue my laptop may have had, OpenOffice interfaced with it in such a way that now I don't have access to my computer anymore. Now I have to go buy a usb drive and put Windows 10 Installation on it and then troubleshoot my PC. OK, so I don't know if this was OpenOffice's fault - but, it was the only unusual thing that happened before my laptop died. Also, the fact remains that the program has been crashing CONSTANTLY, on both my pcs, for the smallest things. That is very concerning.