Open Source Software for macOS
Synfig Studio
Synfig Studio is a free and open-source 2D animation software for Windows, Linux and OSX.
Standard Notes
Standard Notes is a safe place for your notes, thoughts, and life's work. With Standard Notes you can create, edit and manage notes with a complete encrypted app that is free and open source.
DB Browser for SQLite
A high quality, visual, open source database management tool for SQLite databases. With DB Browser for SQLite, users and developers can create, search, and edit databases. DB Browser for SQLite uses a familiar spreadsheet-like interface, and complicated SQL commands do not have to be learned.
QtPass
QtPass is free and open-source, cross-platform password manager that is part of the pass ecosystem. The pass project is an open initiative that builds the standard unix password manager, a universal protocol for password management. This means that you can easily switch away from the QtPass to a new client, as long as it uses the "pass" password store.
Padlock
Padlock is an open source, cross-platform password manager that lets you syncronize passwords across platforms. With Padlock you can store your passwords saftley. Padlock is provided as a manage service for a monthly cost, or can be self-hosted on your own hardware or in the cloud.
Microsoft Edge
A free Chromium-based web browser developed for rebuilt for performance and compatibility by Microsoft. Microsoft Edge features a browser experience that can make you more productive. You can also automatically donate to cause of your choice when you search with Bing through Microsoft Rewards and Microsoft Edge.
OpenSSH
OpenSSH is a free and open-source suite of secure networking utilities. The suite provides tools for remote login with the SSH protocol. All traffic over OpenSSH is fully encrypted eliminate eavesdropping, connection hijacking, and other malicious activities by potential attackers.
Vagrant
Vagrant is an open-source software building portable and virtual development environments. With Vagrant, developers and devops can create development environments that mirror production environment by providing the same operating system, packages, users, and configurations. Vagrant can be spin up environments for VirtualBox, KVM, Hyper-V, Docker containers, VMware, and AWS, and integrates with exiting configuration tooling such as Ansible, Chef, Docker, Puppet or Salt
Godot Engine
Godot is a free and open-source 2D and 3D, cross-platform, game engine released under the MIT license. With Godot, you can develop games using Go or GDScript. Godot provides a huge set of common tools for game production, so that you can focus on making your game without reinventing the wheel. The development environment runs on multiple operating systems including Linux, macOS, and Windows and can compile games for PC, Mobile and the web browser.
Pygame
Pygame is a library that includes a set of modules designed for writing video games in Python. Pygames wraps and adds functionallity on top of the C library SDL. A cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. Allowing you to create fully featured games written entierly in the programming language Python.