Free programs
7-zip
Free WinRAR alternative - Archiving tool
AIO Runtimes
All needed runtimes in one place!
CDBurnerXP
Burn your CDs and DVDs free with this alternative to Nero
Double Commander
Best free alternative to Total Commander
Google Chrome
One of the best FTP/SFTP clients
Notepad++
A better alternative to Notepad, with code highlighting (HTML, PHP, CSS, JavaScript etc.)
PuttY
SSH anywhere
qBitTorrent
Mainly developed for UNIX systems, qBittorrent is the best free P2P downloader (torrents, magnet links and RSS). No adware, no malware (unlike uTorrent)
Skype
The good old Skype for Windows (even Windows 10!)
TinyWall
Free firewall with great compatibility and learning option
VLC Media Player
Best video media player around
Winamp
Everyone knows this one. The best music player for your Windows PC
WinCDEmu
Not PowerISO, Alcohol 120% but the very best free alternative
WinSCP
One of the best FTP/SFTP clients

Disclaimer:
This site is intended for educational purposes only, it does not own nor host any of the softwares mentioned.
All the mentioned softwares are freeware which means they are free to use and do not require any investments for long-term usage.