Windows 10 (Open Source)

LibreOffice is a powerful office suite – its clean interface and feature-rich tools help you unleash your creativity and enhance your productivity.

Whether you’re part of a school club, a gaming group, a worldwide art community, or just a handful of friends that want to spend time together, Discord makes it easy to talk every day and hang out more often.
Create an invite-only place.

• Discord servers are organized into topic-based channels where you can collaborate, share, and just talk about your day without clogging up a group chat.

• Voice channels make hanging out easy. Grab a seat in a voice channel when you’re free. Friends can see you’re around and pop in to talk, without having to call.

• Reliable tech for staying close. Low latency voice and video feels like you’re in the same room.
STAY CLOSE WITH TEXT, VOICE, AND VIDEO

• Wave hello over video, watch friends stream their games, or gather up and have a drawing session with screen share.

• Turn any image into your own custom emojis and share them with friends.

• Share anything from a funny video to your latest group photos, and pin your favorites to remember later.

FOR A FEW OR A FANDOM

• Custom moderation tools and permission levels can group up your friends, organize your local book club, or bring together music fans from around the world.

• Create moderators, give special members access to private channels, and much more.

Sumatra PDF is a free PDF, eBook (ePub, Mobi), XPS, DjVu, CHM, Comic Book (CBZ and CBR) viewer for Windows.

Sumatra PDF is powerful, small, portable and starts up very fast.

Simplicity of the user interface has a high priority.

Firefox is a cross-platform web browser developed by the Mozilla Foundation. Firefox is a popular product, used in over 50 languages and available for Windows, macOS, Linux, Android and iOS.

7-Zip is a file archiver with a high compression ratio.

The main features of 7-Zip

High compression ratio in 7z format with LZMA and LZMA2 compression
Supported formats:
Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z.
For ZIP and GZIP formats, 7-Zip provides a compression ratio that is 2-10 % better than the ratio provided by PKZip and WinZip
Strong AES-256 encryption in 7z and ZIP formats
Self-extracting capability for 7z format
Integration with Windows Shell
Powerful File Manager
Powerful command line version
Plugin for FAR Manager
Localizations for 87 languages

7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2012 / 2008 / 2003 / 2000 / NT. There is a port of the command line version to Linux/Unix and macOS.

GIMP is a free program for such photo retouching, image composition and image authoring. Essentially it's the closest thing to Photoshop you can get for free.

VLC is a free and open source cross-platform multimedia player and framework. Owned by the non-profit organization VideoLAN.