RemNote
Description: RemNote is a free, open-source spaced repetition and note-taking app. It uses an interconnected web of notes to promote understanding and long-term memory retention. Key features include note linking, spaced repetition flashcards, knowledge graphs to visualize connections, and excellent mobile apps.
Type: software
Pricing: Open Source
Vikunja
Description: Vikunja is an open-source to-do list and task management web application. It allows users to create tasks, organize them into lists and boards, set due dates, assign tasks to other users, comment on tasks, and mark them as complete. Vikunja has a simple, intuitive interface and aims to help teams collaborate more effectively.
Type: software
Pricing: Open Source