authored by twin/a, 74% confidence
Blame Arbitration
git blame was built for strangers. Ours weighs keystroke cadence, chair height and birth order, then names a twin. When the model ties, the older twin is liable. This is in the terms.
Two developers. One face. No plausible deniability.
Fork is a cloud IDE built for twins. Every line of code is signed, timestamped and attributed to the correct sibling with 61% confidence.
Blame Arbitration: line 41 61% Pooja, tie-break pending
An IDE that assumes one of you is lying.
Everything Replit does, plus three systems for establishing who did it. Your code runs in the browser. Your alibi runs on our servers.
authored by both, allegedly
Telepathic Merge
Conflicting edits are resolved by assuming you both meant the same thing. If you didn't, one of you will by Thursday.
authored by twin/b, 52% confidence
Mirror Mode
Your cursor and your sibling's cursor move in lockstep across a vertical seam. Output is unchanged. The screen recordings are excellent.
Trusted by 2,412 pairs and one set of triplets we are not discussing.
Each testimonial below was submitted by one twin and countersigned by the other. Countersignatures were not verified.
“The model attributed the outage to my sister. I have not corrected it and I will not.”
Priya Raman
Senior Backend Engineer and Younger Twin by 11 Minutes, a logistics company in Leeds
submitted by twin/b, 88% confidence
“We shipped faster once Fork confirmed which of us was the slow one. It was Theo.”
Teddy Okonkwo-Hale
Co-founder (the other one), Okonkwo-Hale Software
disputed by Theo, appeal 0042 open
“Mirror Mode put both our cursors on line 40 at the same moment. Legal has asked us not to describe what happened next.”
Ines and Ilse Varga
Joint Head of Platform (one seat, one badge), Municipal Water Authority of Graz
authored by both, 50.0% each
Priced per pair. Splitting the bill is a separate product.
Refunds go to the older twin. Fork does not mediate what happens after that.
Moved Out
$0
For the twin who lives in another city now.
- 1 workspace, no sibling access
- Blame defaults to you, every time
- Monthly email asking if you've called
Matching
$38/mo per pair
Billed as one person. Used as two.
- Shared workspace with dual cursors
- Blame Arbitration at 61% confidence
- Birthday notifications, deduplicated
- Telepathic Merge, unlimited
Custody
$1,400/yr
For twins who no longer speak.
- Separate repos, one shared invoice
- A neutral third cursor, operated by our staff
- Your mother on the CC line, read-only
Watch a real dispute get resolved.
The demo is a live workspace shared by Pooja and Priya Raman. One test is failing. Somebody is about to be named.