Mihai Parparita
@persistent.info
Engineer at Sierra, formerly of Tailscale, Slack, Quip, Google Chrome and Google Reader.
I've switched over Infinite Mac's classic Mac emulation to recently-released and awesome Snow, which unblocks A/UX emulation: infinitemac.org?filter=aux There's a behind-the-scenes blog post at blog.persistent.info/2026/09/infi... detailing this and other site updates.
The nice thing about making your own weather app is that you can make features just for yourself. I'd always wanted to know every morning if work (nominally 45 miles away, but an entirely different climate) had different weather, and now I can. apps.apple.com/app/weather-...
Weather Text Work Location Mode
blog.persistent.info
Two new tools on www.streamspigot.com: - Sky Feeder generates a feed of your Bluesky timeline - Tweeter Feeder generates per-account feeds for that other site Together with the existing Masto Feeder tool, this lets me continue to pretend to live in 2011, consuming everything in a feed reader.
Classic Mac's OS file system innovations (resource forks, metadata) were often lost in transit on the Internet in 1995, and the same is true 30 years later with Infinite Mac. I found a workaround using modern macOS's built-in .zip archives – a brief writeup: blog.persistent.info/2025/09/infi...
Infinite Mac can now be embedded into any website: infinitemac.org/embed For a demonstration of what this can enable, see @aresluna.org's amazing "Frame of preference" article: aresluna.org/frame-of-pre...
I wrote something new! It’s a UI design history essay about Mac’s Control Panel, and it uses emulation in some… maybe new and maybe interesting ways? aresluna.org/frame-of-pre...
Frame of preference
A story of early Mac settings told by 10 emulators.
aresluna.org
Mac OS X was released on this day 24 years ago. On this anniversary, here it is on the web: infinitemac.org/2001/Mac%20O... (technically 10.1, but that’s the first release that actually worked acceptably)
New company, new corporate blog for me to post on. sierra.ai/blog/gardeni... describes an engineering team ritual that we've developed. You can tell that it was not ghost-written because I got to cram in a lot of links to obscure articles.
Gardening Week: Evergreen Engineering
At Sierra, we value intensity and craftsmanship—Gardening Week is an investment in the long-term quality of our software.
sierra.ai
Infinite Mac now has a “Macintosh Garden” drawer that allows one-click loading of any of the 20,000 items archived by that site. I wrote up a brief post with some behind-the-scenes details: blog.persistent.info/2024/11/infi...
I’m still team “if you didn’t blog it, it didn’t happen”. So here’s a post about how much Quip technology is in Slack canvas (spoiler: a lot): https://blog.persistent.info/2023/07/slack-canvas-quip.html
Slack Canvas In The Streets, Quip In The Sheets
blog.persistent.info
https://tailscale.dev/blog/battery-life describes battery life work we're doing at @tailscale.com. It's been a fun few months going beyond just Darwin spelunking to also hack on the Go standard library and explore different aggregation and visualization options.
Battery life instrumentation
We’ve added instrumentation and taking a more systematic approach to investigating battery life issues in the Tailscale mobile clients.
tailscale.dev
