iTerm2

TextSniper enables you to effortlessly extract non-selectable text from a wide range of sources, including YouTube videos, PDFs, images, online courses, and beyond, all in an instant.

TaskExplorer is a free open-source software enabling users to view running processes signatures, network connections, etc. on macOS.

Open-source system emulator and hypervisor for macOS and iOS devices.

Open-source storage browser supporting protocols/services including FTP, SFTP, WebDAV, Amazon S3, OpenStack Swift, Backblaze B2, Microsoft Azure & OneDrive, Google Drive and Dropbox.

Simple and easy open-source hex editor.

LuLu is a free open source firewall for macOS, capable of alerting and blocking unwanted connections.

Open-source advanced Hex editor for reverse engineers and programmers.

Fancy slide over browser for macOS.

Netiquette is a open-source tool used to monitor network connections via GUI as well as CLI for macOS