Software for macOS
Viber
Viber is a cross-platform voice over IP application that allow people to make free and secure calls and messages to anyone, anywhere. With Viber, you can create group chats and make group calls, send stickers and emojis over chats that are 100% synced between devices, including 1-tap transfer of calls. Viber is available for free on Android, iOS, macOS, Linux and Windows.
Mumble
Mumble is a free and open-source voice over IP application primarily designed for gamers. The application features a customizable in game overlay, application skins, conversation recording, and advanced voice activity detection. Anyone can download and use Mumble for free, but if you want your own server, you can rent a managed solution from the company behind Mumble, or host your own.
Discord
A VoIP application and platform designed for creating communities and connecting gamers, and people rallying around specific causes. The Discord client is a free to use and can handle text, image, video and audio communication between users in a chat channel. Currently over 250 million users use the software to connect with others across the globe.
Evernote
Orginize your notes effortlessly in the cloud with Evernote. The application is designed or note taking, organizing, task management, and archiving. With Evernote users can find information and take notes in the form of text, drawings, photographs, or saved web content that can be shared with anyone. Evernote is available cross platform and is free to sign up for, however premium features are provided at a monthly cost.
CodeLite
CodeLite is a free and open source, cross-platform code editor. With CodeLite you can write C, C++, PHP, and JavaScript applications. CodeLite is used mainly bybackend developers using Node.js.
Zettlr
Zettlr is a web-based MarkDown editor built for the 21st century. As writing has become an essential part of our everyday life, Zettlr has made it its mission to redefine what writing means. The slim, fast, and versatile MarkDown editor let's you focus on whats important, to write and publish.
SparkleShare
SparkleShare is a free and open-source cloud storage and file synchronization software. By default SparkleShare uses Git as a storage backend and creates a special folder on your computer that you can add remotely hosted folders (directories). Projects in this folder will automatically stay synced with the host and its peers. When someone add, remove or edit files within a project, syncronization happens across peers. SparkleShare can be used with hosted services such as GitHub, but can also be hosted on your own server for more control.
IPFS
The InterPlanetary File System or IPFS for short is a distributed hypermedia protocol designed to be the new permanent web. IPFS uses peer-to-peer to distribute the network across machines and the globe. IPFS combines decentralized technologies like Git, BitTorrent, Kademlia and SFS to build what they think could be the new internet, or a subsystem of it.
OpenSCAD
A free 3D CAD software developed for macOS, Linux and Windows. With OpenSCAD you can create solid 3D CAD objects through a script-only based modeller that uses its own description language. All objects in OpenSCAD can be viewed and inspected but not interactively selected or modified with gestures or mouse. Everything in OpenSCAD is based on scripts, a feature that some love. The software is openly developed and released under the GNU General Public License.
Zulip
Zulip is an open-source real-time chat with an email threading model. With Zulip, you can catch up on important conversations while ignoring irrelevant ones. Zulip provides modern apps for every major platform, powered by Electron and React Native. The software is 100% open source software, built by a vibrant community of hundreds of developers from all around the world.