A list of softwares that I recommend

• EasySSH - A ssh connections manager
• Seahorse + seahorse-nautilus - Password manager and files encryption
• Notepadqq - The best replacement for Notepad++
• Anki - Flash cards
• Peek - A GIF generator. Useful for helping people or creating tutorials
• FileZilla - One of the best FTP, SFTP clients
• Remmina - RDP, VNC client
• Wireshark - A must have for anyone who is into I.T.
• Rednotebook - Hands down the best software for taking notes
• Meld - A graphical diff
• Regex Tester - You got it
• Zeal - Download and keep offline documentation of many different languages and softwares
• Qmmp - If you were Winamp fan, this music player is for you
• Timeshift - If you like changing your configuration files a lot, you need this tool
• Mark Text - Great markdown reader and editor