Rune is a small, fast text editor for the Mac. One scratch file in iCloud Drive is shared by all your Macs: saved as you type, and edits from two Macs are merged, never overwritten. Plain-text paste, Sublime Text's colors and keys, and Find in History.
I’ve used Sublime Text every day for almost twenty years, but only a few of its features, and it doesn’t do the one thing I wanted most: keep one scratch file the same on every Mac I use, without losing a line when two of them change it. So I built Rune, a small editor around that file.
How it works: the scratch file is stored in iCloud Drive. Rune saves the file a second after you stop typing, uploads each version itself, and when two Macs both changed the file, it merges the changes, by line and then by word. Where both changed the same lines, both versions stay in the file between git’s conflict markers, so nothing is lost even if you open it in another editor. The status line at the bottom says whether each version is saved, uploaded, or loaded on your other Mac.
It’s now my everyday text editor too: highlighting that matches Sublime Text in 33 languages, Sublime Text’s keys and multiple carets, and ⌘V pastes plain text only, with no fonts or colors. And when Find has no matches, Rune searches the file’s saved versions and tells you which one still has what you deleted.
There’s no account and no server of mine: your files go only through iCloud Drive, and there’s no analytics. It’s $19 once for 3 Macs, with 7 days free on each.
I’d like to hear what’s missing or doesn’t work, especially from people who use it on more than one Mac.
About Rune on Product Hunt
“Write it down on one Mac, find it on the other”
Rune launched on Product Hunt on October 9th, 2026 and earned 77 upvotes and 4 comments, placing #22 on the daily leaderboard. Rune is a small, fast text editor for the Mac. One scratch file in iCloud Drive is shared by all your Macs: saved as you type, and edits from two Macs are merged, never overwritten. Plain-text paste, Sublime Text's colors and keys, and Find in History.
On the analytics side, Rune competes within Mac, Productivity and Developer Tools — topics that collectively have 1.3M followers on Product Hunt. The dashboard above tracks how Rune performed against the three products that launched closest to it on the same day.
Who hunted Rune?
Rune was hunted by Bill Anastas. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Rune including community comment highlights and product details, visit the product overview.
Bill Anastas