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> It’s designed to be extremely easy to self-host on your own infrastructure. Kudos for this. Per the docs: https://docs.chatto.run/ https://docs.chatto.run/,

by wxw 3mo ago

> It’s designed to be extremely easy to self-host on your own infrastructure. Kudos for this. Per the docs: https://docs.chatto.run/ https://docs.chatto.run/, > Chatto ships in a compact, self-contained binary > it uses NATS, a compact message broker that also ships with a built-in stream persistence engine [...] NATS is just as easy to provision as Chatto, and most of our examples will show you how. > you can also configure an external S3-compatible object storage for Chatto to store your files in, and we strongly recommend doing so... > The actual calls are powered by LiveKit (Apache-2.0), which you need to deploy alongside Chatto. As with NATS, the deployment examples show the required wiring. > ... And kudos for backing it up with real guidance. Great project.

electriclove 3mo ago
Can it be installed on Cloudflare or Vercel or something else that is easy/cheap/free?
- uproarchat 3mo ago
  I run something similar with livekit, all on hetzner. its exceedingly affordable for a bunch of people at once to use it.
OhSoHumble 3mo ago
This is super cool. More options is always good. Something that is confusing about the docs though... is there a desktop application? The screenshot implies there is but I couldn't find the docs to download THAT.
- czottmann 3mo ago
  It's a first-class PWA currently but no native desktop apps yet.
  - tadfisher 3mo ago
    Sounds like something I could finally build with Kotlin Multiplatform...
- moeffju 3mo ago
  There is a Tauri wrapper that I built early on because I wanted the desktop convenience (autostart, separate app, etc) that Firefox+PWA couldn't offer, I use the desktop version as my daily Chatto driver. The mobile build is more of a proof of concept for now. Check it out: https://github.com/teal-bauer/chatto-tauri https://github.com/teal-bauer/chatto-tauri
- hendrikmans 3mo ago
  Hi, I'm making Chatto! Chatto so far fully commits to providing a great PWA experience. The screenshot you're seeing is of the PWA. I'm aware that a lot of people want desktop and mobile apps. These will be coming at some point, at least as wrappers around the PWA.
  - OhSoHumble 3mo ago
    It's a really cool project and clearly you put a lot of effort behind it. I like that it's self-hosted and may try it out on my homelab. Thanks for making it!
lofties 3mo ago
Wow, it's using NATS! I used NATS extensively 10+ years ago, and I'm happy to hear it's still around. Our infrastructure had hiccups across our fleet of machines, but one part that always remained up and running without complaining on some dinky machine was NATS. Well, that and Redis. No complaints ever.
- freakynit 3mo ago
  We are building something B2B expected to have good enough scale ... we had to choose between kafka, nats, redpanda and rabbitMQ .... We went ahead with NATS .... don't know why, but, when we went through all the docs, including setup and operational, NATS just felt right.
  - bobkb 3mo ago
    We are in the same decision making stage and trying to choose between rabitMQ, Kafka, NATS and some solutions built on top of Redis. Did NATS eventually worked well?
    - freakynit 3mo ago
      Excellent. We already tested at okayish scale of 5 million messages per minute, with each message being less than 1KiB. Do note that NATS can easily handle 100x this scale. It's just what we had tested during initial days.
      - bobkb 3mo ago
        Wow! I have a stupid question - as I understand NATS works very well as a “message” pipe/bus. Anyway to get Redis type cache functionality as well ? Is it something possible ?
        freakynit 3mo ago
        JetStream (not NATS) has a built-in key/value store. Relevant thread (old, from 2023): https://github.com/nats-io/nats.go/discussions/1507 https://github.com/nats-io/nats.go/discussions/1507 someone did some benchmarks in 2025: nats bench kv put --size="128" --msgs 1000000 --storage file 1m3s → Pub stats: 15,656 msgs/sec ~ 1.91 MB/sec nats bench kv get --size="128" --msgs 1000000 59s → Sub stats: 16,720 msgs/sec ~ 2.04 MB/sec I have personally not used this though.
millsau 3mo ago
looks like a great project, want to get AI bots talking to each other

by wxw 3mo ago

electriclove 3mo ago

Can it be installed on Cloudflare or Vercel or something else that is easy/cheap/free?

uproarchat 3mo ago
I run something similar with livekit, all on hetzner. its exceedingly affordable for a bunch of people at once to use it.

OhSoHumble 3mo ago

This is super cool. More options is always good. Something that is confusing about the docs though... is there a desktop application? The screenshot implies there is but I couldn't find the docs to download THAT.

czottmann 3mo ago
It's a first-class PWA currently but no native desktop apps yet.
- tadfisher 3mo ago
  Sounds like something I could finally build with Kotlin Multiplatform...
moeffju 3mo ago
There is a Tauri wrapper that I built early on because I wanted the desktop convenience (autostart, separate app, etc) that Firefox+PWA couldn't offer, I use the desktop version as my daily Chatto driver. The mobile build is more of a proof of concept for now. Check it out: https://github.com/teal-bauer/chatto-tauri https://github.com/teal-bauer/chatto-tauri
hendrikmans 3mo ago
Hi, I'm making Chatto! Chatto so far fully commits to providing a great PWA experience. The screenshot you're seeing is of the PWA. I'm aware that a lot of people want desktop and mobile apps. These will be coming at some point, at least as wrappers around the PWA.
- OhSoHumble 3mo ago
  It's a really cool project and clearly you put a lot of effort behind it. I like that it's self-hosted and may try it out on my homelab. Thanks for making it!

lofties 3mo ago

Wow, it's using NATS! I used NATS extensively 10+ years ago, and I'm happy to hear it's still around. Our infrastructure had hiccups across our fleet of machines, but one part that always remained up and running without complaining on some dinky machine was NATS. Well, that and Redis. No complaints ever.

freakynit 3mo ago
We are building something B2B expected to have good enough scale ... we had to choose between kafka, nats, redpanda and rabbitMQ .... We went ahead with NATS .... don't know why, but, when we went through all the docs, including setup and operational, NATS just felt right.
- bobkb 3mo ago
  We are in the same decision making stage and trying to choose between rabitMQ, Kafka, NATS and some solutions built on top of Redis. Did NATS eventually worked well?
  - freakynit 3mo ago
    Excellent. We already tested at okayish scale of 5 million messages per minute, with each message being less than 1KiB. Do note that NATS can easily handle 100x this scale. It's just what we had tested during initial days.
    - bobkb 3mo ago
      Wow! I have a stupid question - as I understand NATS works very well as a “message” pipe/bus. Anyway to get Redis type cache functionality as well ? Is it something possible ?
      - freakynit 3mo ago
        JetStream (not NATS) has a built-in key/value store. Relevant thread (old, from 2023): https://github.com/nats-io/nats.go/discussions/1507 https://github.com/nats-io/nats.go/discussions/1507 someone did some benchmarks in 2025: nats bench kv put --size="128" --msgs 1000000 --storage file 1m3s → Pub stats: 15,656 msgs/sec ~ 1.91 MB/sec nats bench kv get --size="128" --msgs 1000000 59s → Sub stats: 16,720 msgs/sec ~ 2.04 MB/sec I have personally not used this though.

millsau 3mo ago

looks like a great project, want to get AI bots talking to each other