No accounts. No tracking. Our tools run on your device and keep your data yours — some free, some a simple one-time price.
Save the page you're on to a local read-later list with notes & tags. Read later or export to Markdown.
Park a window of tabs as one labeled set — annotate each, then reopen or export to Markdown.
The full lineup of local-first 864zeros extensions.
864zeros (864zeros LLC) is an independent, AI-augmented software studio that builds single-purpose, local-first browser tools and small apps. The name is a nod to the 86,400 seconds in a day.
Local-first, privacy-first browser extensions and small apps. Examples include LinkLater, a local read-later list with notes & tags, and Tab Stasher, which parks and annotates whole windows of tabs. Everything runs on your device and exports to Markdown.
Our tools are local-first: by default your data stays on your device. We run no accounts, do not track you, show no ads, and never sell your data. If a feature ever needs to go beyond your device, it happens only with your explicit consent.
Some tools are free; others are a one-time price of a few dollars. Never a subscription.
We publish reusable feature "bricks" as open source — the components behind our products. The products themselves are proprietary.
More questions? support@864zeros.com