Full-featured, modern ticket hosting software available both as an open source package for self hosting and as a commercial service.

Excalidraw is an open-source whiteboard tool that lets you easily sketch diagrams that have a hand-drawn feel to them. Available directly online as a web app and also through CodeSandbox to easily see how the code works, and the app is available for self-hosting.

Spacedeck lets you easily combine all kinds of media on virtual whiteboards: Text notes, photos, web links, even videos and audio recordings.

scrumblr - Collaborative Online Scrum (whiteboard + kanban) Tool Using Websockets, Node.js, jQuery, and CSS3

Open-source software for creating websites and blogs with an emphasis on accessibility, ease of use, performance, and security.

Drag-and-drop WordPress form builder with no coding needed, multi-page forms, payment processing, CRM integration, GDPR compliance, and dedicated support.

BigBlueButton enables universities and colleges to deliver a high-quality learning experience to remote students.

Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework.

Go ahead, video chat with the whole team. In fact, invite everyone you know. Jitsi Meet is a fully encrypted, 100% open source video conferencing solution that you can use all day, every day, for free.