Find out what takes up space in a folder with a size map, without deleting or changing anything.
Open-source software by 0then0
Open-source apps and developer tools
Apps for storage, battery care, pronunciation and reading notes, plus narrow developer tools for bugs that are hard to reproduce. Pick a task, check the platforms and limits, then download or try it.
Find a project by task
Apps
Apps for everyday use
Save US and UK pronunciation recordings of English words as MP3 files, with IPA, definitions and Anki export.
Carry your Zotero highlights and underlines to a new revision of the same PDF, reviewing each one before it is written.
Set a laptop charge limit and battery-care schedule where your hardware allows it, and see exactly which controls your device supports.
For developers
Self-hosting and debugging
Run your own form service: publish versioned forms, collect responses in PostgreSQL, and deliver them to signed webhooks.
Shrink a PostgreSQL database to the few rows and tables that still reproduce a failing test.