End to end
Messages and calls are encrypted on your device.
Chat and callsNow available
Chats and calls only the people in them can read.
KolChat is the messenger in KolHive, and an app of its own. Text, voice notes, photos and files are encrypted on your device before they are sent, and voice and video calls go from device to device, encrypted end to end. The encryption follows the Signal protocol design. It uses the same account as KolHive and KolWrite.
Free for macOS, Windows, Linux and the web. Start demo
Groups and channels
Groups of up to 1,024 people, communities and channels.
Meetings from a link
Up to 100 people, joining from the app or a browser.
AI on your terms
Search runs on the device; answers use the AI you pick.
What the server can and cannot see
A messenger is only as private as what its server can read, so KolChat states it plainly.
Never
Message text, photos, files, voice notes, call audio and video, meeting transcripts and your encryption keys.
To deliver messages
Who you talk to and when, group names, photos and members, and your devices' IP addresses.
Signal protocol design
The encryption follows the Signal protocol design, and your keys stay on your devices.
One account
Sign in with the same account you use for KolHive and KolWrite.
Meetings, search and AI
The parts that usually need a server, designed to keep your words on your device.
Record and transcribe
Turn on Record and transcribe in a meeting, and the transcript is made on your device.
AI meeting notes
Decisions and action items from the meeting, as a cloud extra that uses AI credits.
Search by meaning
Search runs on your device and finds a message by what it meant, also across languages.
Answers you control
With an AI on your own computer everything stays on the device; with another provider, the chosen messages are sent only after you tap Send.
What you can use today, and what is coming
Available now
- KolHive for macOS, Windows, and Linux, free, and in the browser at web.kolhive.com.
- KolChat inside KolHive, with the same account.
- KolChat on its own: iPhone, Android, Mac, Windows, Linux, and the web at chat.kolhive.com.
Coming
- KolHive for iPhone and iPad: in App Store review.
- KolHive for Android: coming to Google Play.
How a message stays private
Your device encrypts it
The message is encrypted on your device before it leaves.
The server passes it on
It delivers encrypted messages it cannot open.
Their device decrypts it
Only the people in the chat can read it.
AI only when you say so
Search runs locally; a cloud AI sees chosen messages only after you tap Send.
Questions and answers
Is KolChat end-to-end encrypted?
Yes. Messages, files, voice notes and calls are encrypted end to end. The design follows the Signal protocol and has not had an independent audit yet.
Can I use KolChat now?
Yes. It is built into KolHive, and KolChat is also its own app on iPhone, Android, Mac, Windows and Linux, and in the browser at chat.kolhive.com.
Can the AI read my chats?
Only when you ask. Search runs on your device, an AI on your own computer keeps everything there, and another provider receives the messages you chose only after you tap Send.
How many people can join a meeting?
Up to 100, from the app or from a link in a browser.
Keep exploring KolHive
- AI OSWhat an AI operating system is, and how KolHive works as one.
- Private AIA model on your own computer, files kept local, apps that ask first.
- SecurityWhere data lives, how it is encrypted and backed up.
- Meeting notesTranscripts with speaker names, then decisions and action items.
- KOL StoreFree apps and games of ours, including Amberhollow.
- Scheduled messagesWrite now in KolChat, send later.
- Chat statusText, photo, video or voice, for the people you choose.
- Message requestsStrangers' messages wait until you accept them.
- Call noise removalBackground noise taken out of your voice.
- Polls and eventsPolls, events and spoilers in the chat.
Get KolHive.
Download it for your computer or open it in the browser. One free account for KolHive, KolChat and KolWrite.