Free
Algodoo
2D physics sandbox for drawing and simulating scenes with gravity, fluids, springs, optics and more. Great for learning physics.
Address
Keeping up with the news and building knowledge
Open Source
FreshRSS
Self-hosted RSS reader that follows all your feeds in one place and syncs with mobile apps.
Free
Obsidian
Markdown notes stored on your own disk, linked together into a personal knowledge base.
Open Source
Zotero
Collects, organizes and cites your research sources. The browser connector saves papers and pages in one click.
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4 objects