Google docs, Libreoffice and, VIM. I usually type everything in vim first; I use Ubuntu with I3 on second hand X220. With xterm + vim (and other terminal apps),

Google docs, Libreoffice and, VIM. I usually type everything in vim first; I use Ubuntu with I3 on second hand X220. With xterm + vim (and other terminal apps), I have 18 hours battery life. When a browser or Libre kicks in, the battery drops to < 7 immediately. But after that I copy it to docs or Libre and add images, styling etc. Then I usually export to PDF and send. But as doc works fine. When I get documents from others, Libre office works fine. Never had issues so far (and it's been quite a few years).