I can suggest some of the best free software available as of my knowledge cut-off date in 2021.
Mozilla Firefox: Firefox is a free and open-source web browser that provides excellent privacy features and customization options. https://www.mozilla.org/en-US/firefox/new/
LibreOffice: LibreOffice is a free, open-source office suite that includes programs for word processing, spreadsheets, presentations, and more. https://www.libreoffice.org/
GIMP: GIMP is a free, open-source image editor that provides advanced tools and features for editing and manipulating images. https://www.gimp.org/
VLC Media Player: VLC is a free and open-source media player that can play almost any audio or video format. https://www.videolan.org/vlc/index.html
OBS Studio: OBS Studio is a free and open-source software for video recording and live streaming. It is popular among gamers and content creators. https://obsproject.com/
Please note that there may be new and better software available in the future, so it's always a good idea to do your research and find the best software for your needs.