Home↗
One thread for
your whole team.
Chat, announcements, calendar, notes, tasks and files. The platform that runs on your own domain, carries your brand and never charges per user.
- ✓ Messages, announcements, tasks and files in one thread
- ✓ Private on your domain, no per-user fees
- ✓ Yours from day one
- Self-hosted
- No per-user fees
- Your domain
- PWA & mobile
New mentionAna mentioned you in #product
With clients3 events this week
real ONMI screenshot ↗
One thread, all the context
Messages, announcements and files
in the same place.
The conversation stops being just another tab. The announcement, the date, the note and the file live next to the decision that made them possible.
Notes↗
Chat↗
Calendar↗
Profile↗
Audit↗
The problem isn't the chat
The work doesn't fit in fourteen tabs.
The conversation lives on one side, the announcement on another, the date in the calendar and the decision gets lost in a thread. ONMI brings the context together so your team doesn't have to hunt for where everything went.
Conversations with memory
Channels, DMs and threads with search, reactions, files and notes. Context doesn't leave when the meeting ends.
Visible decisions
Announcements with comments and mentions. What matters doesn't compete with fifty messages nobody remembers.
Your team, not a tenant
It runs on your domain and stays with your brand. Your data isn't another company's product.
One product, all the context
This is what working in ONMI feels like.
Real screenshots, not a smoke mockup. Explore the parts your team will use every day.
Private access, no noise.
Your team enters its own space with 2FA, revocable sessions and a door that is never shared with third parties.
- 2FA with an authenticator app
- Revocable sessions and devices
- No hidden access and no chat readers
Demo data
This is how it moves
The conversation
already does the work.
Write, mention someone and turn an idea into a task. Without jumping to another tool, without losing the thread.
- 01Ask in the channel.Context is in the conversation, not in a separate document.
- 02The answer arrives.Mentions, files and decisions in the same place.
- 03It becomes work.A task, a note or a date without switching apps.
#producto live
✓
Task created from the threadReview the landing before Friday
Fri 16:00
Ana is typing…
+Write a message↗
Tasks without leaving the thread
From message to task.
Without leaving.
Turn a message or a whole thread into a task, assign owners and track progress without losing the conversation.
- 01Create from context.A message or an entire thread becomes a task with its history.
- 02Assign, prioritize, schedule.Owners, urgency, a single date or a delivery range.
- 03Attach and comment.The same editor and protected files as chat.
- 04Report by channel or person.Monthly CSV with status, dates and progress.
Task created from #productAssigned to Ana · due Friday
Everything you need, nothing you don't
A smaller tool.
A more focused team.
No endless menus or integrations nobody set up. Just the right pieces to talk, decide and move forward.
Announcements people actually read
Publish with images, video, reactions and comments. Mentions notify the people who matter, not everyone.
Threads with a destination
Replies don't vanish into the channel. Every thread keeps its context and its latest reply.
Calendar with categories
Internal meetings, clients, projects or personal. Every event has a color and filters in one tap.
Notes that work
Tasks, tags, pinning and autosave. A personal notebook you can also share when needed.
In your pocket and on your desktop
Install ONMI as a PWA on mobile or download the app for macOS, Windows and Android. Your workspace, wherever you are.
Privacy by design
Real privacy,
not a promise.
ONMI has no chat reader for administrators. Auditing is separate from content: it records actions, not conversations. Private files can only be opened by members of the channel.
- 01Metadata-only auditWho did what and when. Never the text of a message.
- 02Attachments with membershipAn admin can manage the file, not read it if they don't belong to the conversation.
- 03Revocable sessionsActive devices, remote sign-out and 2FA when the team needs it.
●
Metadata onlyNo messages. No attachments. No shortcuts.
Your brand, your domain
It isn't “a chat”.
It's your platform.
Change the name, logo and color in Settings. ONMI adapts to your company in the app, the PWA, emails and login. The domain is yours.
Accent color
Organization name
Edit and watch it change live.
ONMISearch
Your workspace
Hello, team.
One place to talk, decide and move forward.
Get started →your brand here ↗
From idea to team
Three steps.
Zero dependency.
Install ONMI
On your domain and with your database. Your team joins from the browser or installs the PWA.
Invite your team
Name, email and role. Each person chooses their @username, photo, password and 2FA in a clear onboarding.
Make it yours
Name, logo, colors and domain. The platform looks like your company, not a generic tool.
ONMI on your devices
Your ONMI,
outside the browser too.
You already have ONMI. Connect your workspace with the app and open it in its own window or from your phone: your domain, your session and your team, without another account.
Download for macOSIntel and Apple Silicon · .dmg
Download for WindowsWindows 10/11 · 64-bit · .zip
Download for AndroidAndroid 7.0+ · .apk
The apps only open your ONMI installation. Your data stays on your domain.
Clear pricing
One installation.
Your whole team inside.
No per-user subscription. Choose the level of support you need and we make sure ONMI is ready to work.
ONMI BaseTo get started
Your team, on your domain.
The full platform, installed on the hosting and domain you already have. You keep the infrastructure; we make it ready.
From$749USD · one-time
You bring the hosting. We make it ready.
- Installation on your hosting
- Your brand's name, logo and colors
- Channels, DMs, announcements, files and notes
- Calendar, invitations and Jitsi
- Per-channel tasks, owners and CSV reports
- Roles, permissions and metadata audit
- PWA, notifications and 2FA
- Spanish and English interface
- Security patches every four months for 12 months
No hosting yet? Studio includes hosting and domain ↗
Talk about Base ↗ONMI Studio
Everything ready. You just invite the team.
Platform, hosting, domain and hands-on support to launch without technical loose ends. One provider for the entire first year.
From$1,249USD · one-time
Managed hosting and domain included for the first year i120 GB of storage on hosting managed by Dachi Studio. If it fills up, you can free heavy files from the master user panel or expand the space with us. Domain and hosting renewal from year 2: $449 USD per year, subject to change.
- Everything in ONMI Base
- Managed hosting by Dachi Studio (120 GB) and SSL for the first year
- Domain included for the first year
- Incoming email on your domain and SMTP configured
- User onboarding and 2FA
- Audit log, backups and sessions
- 1:1 usage course for your team
- Priority, personalized support
- Future feature updates and security patches for 12 months
Same platform. A different level of peace of mind. Base is for teams that already have hosting and a domain: we install ONMI, apply your identity and cover security patches every four months for the first year. Studio is for launching without depending on anyone: it includes managed hosting, domain, incoming email, a 1:1 course, personalized support and future feature updates for 12 months. Studio hosting and the domain are included for the first year, with the domain contracted in your name. Domain and hosting renewal from year 2 is $449 USD per year, subject to change.
● Base: you provide hosting and domain. Studio: hosting and domain included for the first year.● Domain and hosting renewal from year 2: $449 USD/year (subject to change).● Reference prices for 2026; the final quote depends on scope.● No per-user fees, no matter how many people join.
The uncomfortable comparison
You don't pay per person.
You pay to own it.
Slack is a great product. ONMI is a different decision: your space, your domain and a cost that doesn't grow with every person you invite.
| What matters | ONMI | Slack |
|---|---|---|
| Pricing model | One-time installation feeNo per-user fees | Monthly subscription per person≈ $8.75 USD per person/month |
| First-year cost · 25 people | ≈ $1,249 USD onceONMI Studio · hosting and domain included for the first year | ≈ $2,625 USD per yearSlack Pro · 25 people |
| Data | Your serverYou decide where it lives | Slack infrastructure |
| Domain & brand | Your domain, logo and colors | Standard experience |
| Interface language | Spanish and EnglishEach person chooses | Depends on plan and country |
| Announcements | Native, with commentsNo integrations | Requires canvas or an integration |
| Calendar | Categories, filters and Jitsi | Not native |
| Notes | Tasks, tags and pinning | Canvas on some plans |
| Audit log | Metadata, no chat readerPrivacy by design | Exports on some plans |
| PWA / app | Installable from the browser | Native apps |
| Integrations | API and select connections | Larger ecosystem |
Do the math
Slack's cost grows.
ONMI's doesn't.
Move the team size and compare the first year. A team of 25 people is just the start.
5100
Slack Pro at $8.75 USD per person/month, billed annually. List prices; subject to change.
Slack Pro · 12 months$2,625 USD25 people · 12 months
ONMI Studio · one time$1,249 USDHosting and domain included for the first year
Estimated savings in year one
$1,376 USD
And it doesn't grow when you hire someone.
A comparison of product positioning, not feature-by-feature. Slack® is a trademark of Salesforce. If your team lives inside 30 integrations, Slack may be better; if you want your own space without paying per person, ONMI is built for you.
Let's talk
One call.
Zero commitment.
Tell us how your team works and we'll show you ONMI with a real case. No hour-long presentations or forms that disappear.
The form opens WhatsApp with the message already written.
“
The best tools for a team don't feel like software. They feel like the way that team already thinks.
ONMImade for teams that build
Before you start
Frequently
asked questions.
If your question isn't here, write to us. Real people reply, not a bot.
mauro@onmichat.com ↗Where does ONMI live?
On your server and your domain. You control the database, the files and the backups. ONMI doesn't host your conversations in someone else's cloud.
Can I change the name, logo and colors?
Yes. In Settings you can change the organization name, logo, accent color and icon background. It applies to the app, the PWA, the login, emails and the manifest.
Can an administrator read conversations?
There is no conversation reader. The audit log only shows actions and metadata; never messages or attachments. Private files can only be opened by people in that conversation. As with any self-hosted app, whoever has root access to the server can reach the database directly: that's protected by hosting and credentials.
Does it include hosting and a domain?
It depends on the package. With ONMI Base you provide hosting and domain; we install and configure. With ONMI Studio, managed hosting by Dachi Studio, SSL and the domain are included for the first year (120 GB, expandable); the domain is contracted in your name. Domain and hosting renewal from year 2 is $449 USD per year, subject to change.
Does it work on mobile?
Yes. ONMI is an installable PWA: it opens like an app, receives push notifications and has a mobile-friendly experience. You can also use it in the browser without installing anything.
Is it available in Spanish and English?
Yes. Each person chooses Español or English in their profile and the change is instant. The organization sets the default language, emails go out in the recipient's language, and content written by the team is never translated.
Does it include video calls?
Yes. Calendar events can create a unique Jitsi room, with a link and event password. You don't need an external account for each person.
How much does it cost?
There are two starting points: ONMI Base from $749 USD and ONMI Studio from $1,249 USD, one-time. Studio includes managed hosting and the domain for the first year, contracted in your name; domain and hosting renewal from year 2 is $449 USD per year, subject to change. The final quote depends on scope and the support you need.
Is ONMI an alternative to Slack?
Yes. ONMI brings chat, announcements, calendar, notes, tasks and files into one place, installed on your domain with a one-time price. Slack charges a per-person subscription; ONMI does not. If your team lives inside dozens of integrations, Slack may be a better fit; if you want your own space without per-user fees, ONMI is the alternative.
Does it include tasks?
Yes. Every channel has a Tasks tab. You can create a task manually or turn a message or thread into one, assign owners, set urgency, choose a single date or a date range, attach files, comment and export a monthly CSV report by channel or person.
Does ONMI email me for every message?
No. Messages, mentions and tasks create in-app and push notifications. The only automatic activity email is an optional daily summary: one email per person per day with completed tasks, pending tasks and unread messages. Invitations are only sent when someone creates them.
Your team already knows what it wants
Give it a place
to happen.
Install ONMI on your domain, give it your name and start working with less noise and more context.
No commitment · We'll show you ONMI with your team's data