AudioMass
audiomass.co
A waveform audio editor that runs in the tab with nothing uploaded
No sign-upOn device
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audiomass.co
A waveform audio editor that runs in the tab with nothing uploaded
cal.com
Open-source scheduling links you can run on your own server
deepseek.com
Open-weight reasoning model you can use free in a chat window
excalidraw.com
Hand-drawn-looking whiteboard that opens instantly with no sign-up
huggingface.co
Thousands of runnable AI demos, no model installed on your machine
invoiceninja.com
Open-source quotes and invoices you can host on your own server
meet.jit.si
Open-source video meetings guests join in a browser with nothing installed
languagetool.org
Open-source grammar checking across more than twenty languages
markmap.js.org
Turns a Markdown outline into a collapsible mind map as you type
rawgraphs.io
Makes the chart types nothing else offers — alluvial, beeswarm, treemap
stirlingpdf.io
Fifty PDF tools you can also run on your own machine in Docker
tldraw.com
Infinite canvas that feels like a native app in a browser tab
vert.sh
Open-source converter that handles images, audio and documents on your device
Cuts across
A tag is orthogonal to the category tree — that is what makes it worth having.