SoftMaker FreeOffice is an office suite that has good compatibility with Microsoft Office application file formats and provides most of its functions and features.
This is one of the best free alternative offices that is not inferior in functionality.

It includes:

• TextMaker - text editor (Word)
• PlanMaker - calculations, spreadsheets and charts (Excel)
• Presentations - presentation creation (Power Point)

Transform productivity and security with Xodo PDF Studio, built for professionals. Work with over 60 advanced tools, including OCR, digital signatures, batch processing and encryption, designed to streamline your workflow.

Free Xodo PDF Reader viewer - makes working with PDF files easier and more efficient, allows you to open, navigate, select, and manage documents without restrictions.

PDF Studio™ - an easy-to-use, full-featured PDF editor that is a reliable alternative to Adobe® Acrobat® and provides all the PDF features you need. It supports full PDF compatibility with the ability to add watermarks to documents.

PDF Studio Viewer™ is a free PDF reader that is reliable and easy to use. It can annotate PDF documents and fill out interactive forms.

Master PDF Editor is a powerful editor for working with PDF files, which can also act as a regular viewer for documents of this format.

Features:

• creating, editing, viewing, encrypting PDF;
• adding\removing pages;
• editing text;
• xps support;
• import\export pages in bmp, jpg, png, tiff;

and many others.

Webex is a platform for video conferencing, online meetings, collaboration, and messaging.

It is used in both business and education to conduct:

• Video calls and meetings
• Webinars and online courses
• Collaboration on documents and presentations
• Real-time messaging and file sharing

The platform competes with solutions such as Zoom, Microsoft Teams and Google Meet.

ClamAV-GUI is a user-friendly graphical interface for ClamAV (Clam Antivirus). It is designed to be an easy-to-use, lightweight on-demand scanner for Linux systems.

ClamAV® is an open-source antivirus engine for detecting trojans, viruses, malware & other malicious threats.

Features ClamAV:

PeaZip is an archive manager. It is a single, unified GUI for working with multiple open source data compression technologies (7-Zip, FreeArc, UPX, ZPAQ), as a free alternative to traditional Zip file utilities such as WinZip and WinRar.

Opens and decompresses over 180 archive formats and variants, including ACE, CAB, ISO, RAR, ZIPX... Compress (and convert to) 7Z, BALZ/BCM/QUAD, BZ2, GZ, FreeARC, *PAQ, PEA, TAR files , WIM, XZ and ZIP.

PeaZip also has its own Pea archive format (with support for compression, multi-volume archives and a flexible encryption and integrity control system).

This is a high-quality viewer/cataloger/converter of graphic files, supporting a large number of formats and has many additional functions.

Zoom is a program for organizing video conferencing. It provides a video telephony service that allows you to connect up to 100 devices simultaneously for free, with a 40-minute limit for free accounts.

The utility removes cache, internet history, temporary files, cookies and other unnecessary files and frees up disk space.

It can also ensure privacy is maintained by removing unwanted information and deep cleaning.

Processes and cleans temporary files of Adobe Reader, Bash, Beagle, Firefox, Flash, GIMP, Google Earth, Java, KDE, LibreOffice.org, Opera, RealPlayer, rpmbuild, Second Life Viewer, VIM, XChat, and many more.