Sinistra is workplace messaging built mirror-first. Channels on the right. Send button on the left. Ninety percent of your company will hate it. They'll adjust, the way you did.
The send button is on the left. I keep almost crying at standup.
My right-handed manager joined as a guest. He's been quiet. Good.
Reminder: quarterly dexterity audit begins Monday. Bring your own pen.
The entire interface renders right-to-left. The channel rail sits on the right edge, where your dominant hand already is. Right-handed colleagues describe the layout as "disorienting and hostile." We log each report as a feature confirmation.
Threads scroll upward so your palm never drags across an unread message. Digital text cannot smudge. We fixed it anyway, and we billed for it.
Webcam pen-grip attestation at every login. Verified lefties get the badge. Right-handed users may join as read-only guests, pending a dexterity review they will not pass.
I onboarded all forty people on my team. The right-handed ones quit within the week. Retention has never been easier to read.
The send button is finally where my thumb already was. I closed my laptop and sat quietly for a while.
We failed our first dexterity audit. Sinistra walked us through remediation. We failed the second one with much more confidence.
The channel rail is on the right. The send button is on the left. There is a guest mode for the other people, behind a dialog they deserve.
open the demo →