Local-first
Audio and transcripts never leave your Mac.
Live todayWhy it works
Slack rewards short messages because typing is expensive. With Penwright, that economics flips: the response that would have taken three messages becomes one well-formed reply, complete with bullet points and the right tone for the channel.
You say
okay so my take on the launch is we should push it a week because the docs arent ready and we havent run the migration on staging yet
Penwright writes
My take on the launch: push it a week. Two reasons. The docs aren't ready, and we haven't run the migration on staging yet.
In the wild
Three moments in Slack where Penwright pays for itself.
The quick reply
Press the hotkey, speak the reply, Penwright types it cleanly into the open Slack window. Three seconds instead of three minutes.
The long-form message
Three minutes of speaking turn into a structured Slack message, cleaned, with paragraphs, in the right tone. No typing cramp.
The recurring template
Save your Slack standard replies as snippets, expand them by voice. The local dictionary learns your names, companies, acronyms.
Day one: setting Penwright up for Slack.
- Install Penwright
macOS 13 or later. Grab the .dmg from the download page, drop it in Applications, open.
- Pick your hotkey
Default is ⌘⇧Space. If Spotlight is in the way, set a conflict-free shortcut right away.
- Seed your Slack dictionary
Drop in the names, companies, codenames that show up in your daily Slack threads. Penwright will get them right from day one.
- Dictate your first Slack message
Open Slack, click into a text field, hold the hotkey, speak. Release. The cleaned version lands in the field.
Frequently asked
- Does Penwright work in Slack?
- Yes. Penwright types wherever your cursor lands in a text field, including Slack. There's no separate Slack integration; Penwright uses macOS' standard text insertion.
- Are my Slack messages sent to the cloud?
- No. Transcription and cleanup run locally on your Mac (EuroLLM 1.7B with Metal). If you flip Settings → AI & Style to Claude or OpenAI, then yes, but only when you explicitly activate it, and a visible CLOUD badge stays on while it is.
- Does Penwright understand Slack-specific jargon?
- Decent out of the box, perfect with your own dictionary. Add company names, people names, codenames once in Settings. Penwright will type them correctly into Slack from that moment on.
- Do I need a fast internet connection?
- No. Once the models are installed, Penwright works offline. Ideal for travel, airports, long calls.
In Slack, typing is the real tax.
Three to four times faster with voice. The math gets uncomfortable fast.
Typing40WPM
Average typing speed for a confident keyboard user.
Voice with Penwright150WPM
Sustainable speech rate. No cloud round-trip.
Mac today, more devices soon.
Penwright lives on your Mac today, typing straight into Slack. Mobile is on the way, same voice, same dictionary, same privacy story.
Penwright on Mac
iPhone Coming soon
Privacy you can verify, security in progress.
We're transparent about what we ship today and what we're working on. No imaginary certifications.
GDPR-aware
Personal content stays on the Mac by default. There is no audio to process serverside. Subject-access requests honored.
Live todaySOC 2 Type II
Controls under review. Available on request once audited.
In progressISO 27001
On the roadmap. Targeting completion within the next 12 months.
In progressRelated apps
Gmail
Reply to a full inbox in a fraction of the time. Speak the response, send the clean version.
Discord
Server announcements, support replies, community posts, drafted at speed.
Notion
Fill Notion pages at the speed of thought. Specs, notes, retros, all spoken, all clean.
Cursor
Dictate long prompts and code intent directly into Cursor. Stop typing, start shipping.