New guide The Provider-Agnostic AI Stack — surviving the 2026 lock-down Read it
Built in public by Avijit Sarkar

Knowledge, set free.

One home for everything I build and share — the products I'm betting on, the experiments I've shipped, the small tools I love to make, and a growing library of guides that stay as free as I can keep them. Take what's useful. Go build something.

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  • 70+projects built
  • 550+Knotie partners
  • 2companies
  • 11free guides
Mission

To spread knowledge to as many people as possible, as freely as possible — and to show that anyone can learn to build with AI.

Vision

A world where learning and building happen together — in the open, without gatekeeping — so good ideas reach the people who can use them.

Free by default

Knowledge should reach everyone. Most of what I make is free — and stays that way. Where something takes real cost or effort, it stays affordable, sometimes donation-based.

Built in public

I share the real playbook — the wins and the things that didn't ship. You see how it's actually made, not a polished after-the-fact story.

One brand, many bets

Products, experiments, tools, guides — all expressions of the same mission. Some launch, some never do. The point is to keep making and sharing.

What I'm building

The products I'm betting on

In 2025 I co-founded two companies to ship two very different products. These are the ones with my name on the line.

★ The dream project · SONTI LTD Live · Free to start

Knotie AI

Sell AI under your own brand. Start free.

My dream project. Knotie is a white-label AI platform that lets anyone resell voice agents, chat agents, automations and an AI gateway under their own brand and domain — with credit billing and their own margins built in. No code.

  • Resell voice AI (LiveKit · VAPI · Retell · Ultravox) + n8n chat agents
  • Your brand, your domain, complete white-label
  • Built-in credit billing & recurring invoices — you keep the margin
  • 550+ partners building on it today
Start free with Knotie Free starter kit
HEXAI Care LTD Live

HEXAI Care

AI, built for healthcare.

A healthcare-specific AI venture, built with my co-founders to bring safe, practical AI into care settings. Focused on healthcare organisations rather than general consumers.
The Lab

Dreams I built — but haven't launched (yet)

Real projects I took to a working stage and never shipped. They're not dead — I still want to launch them. If one speaks to you, raise your hand and you'll be first in.

HeyKleo

Built & deployed

An AI business partner — receptionist, chat agent, and operator in one.

An AI business partner that can be your AI receptionist or chat agent and actually run business operations for you. Built on Knotie AI's infrastructure. The site is live and it's almost ready — I'm keen to launch this one soon.

Voice AIBusiness OpsBuilt on Knotie
I'm interested

Drop your email — I'll tell you the moment HeyKleo goes live, and I may reach out to involve you early.

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KnoLimit

MVP almost done

An AI webinar platform where your AI sales reps close the room for you.

An AI-based webinar platform. A one- or two-person business can deliver a flawless webinar while AI sales reps work the room — warming up leads and converting the warm ones into paying clients. The MVP build was almost complete; it never made it out the door.

WebinarsAI SalesConversion
I'm interested

Drop your email — I'll tell you the moment KnoLimit goes live, and I may reach out to involve you early.

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Knobox

Design complete

Stop renting your tools. Own your stack — 100+ open-source apps, one click.

One-click deploy for open-source applications. Knobox gives you a VPS with 100+ open-source apps (Nextcloud, n8n, Open WebUI, Gitea, Vaultwarden…) deployed in a single click — own your stack instead of renting a pile of subscriptions. The design was finished; I still dream of launching this.

Self-hostedOpen SourceOne-click deploy
I'm interested

Drop your email — I'll tell you the moment Knobox goes live, and I may reach out to involve you early.

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KnoMind

Built · open source

A private, voice-first AI coach for your mind — 24/7.

An open-source, voice-first AI coaching companion for mental wellbeing — real-time voice conversations that adapt to you, with privacy at the core. Built on LiveKit and Next.js. It never got published, but the code is open and the idea still matters to me.

Voice AILiveKitOpen SourceWellbeing
I'm interested

Drop your email — I'll tell you the moment KnoMind goes live, and I may reach out to involve you early.

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70+

And 70+ more, walked through video by video

These are just the named ones. Over the last two years I've built 70+ projects — most of them walked through, video by video, on the Kno2gether YouTube channel.

Watch on YouTube
Small tools, big love

Little tools I build because I needed them

Free, fast, no sign-up. Some run right here in your browser; others grew into full apps of their own.

DeveloperLive

Base64 Encoder / Decoder

Encode or decode Base64 instantly. UTF-8 safe, URL-safe option, all in your browser.

Open tool
SecurityLive

JWT Decoder

Paste a JSON Web Token to inspect its header, payload and expiry. Nothing leaves your browser.

Open tool
AILive

Voice AI Opportunity Calculator

Estimate the revenue a voice AI agent could add to a business — missed-call recovery and after-hours bookings.

Open tool

Apps that grew up

Hajabarala Medley

Music

A musician’s tool — build song medleys, auto-scroll lyrics & chords, add notes, colour-code participants, and transpose any scale. AI standardises any messy chord sheet into the app format.

SBS Showrunner

Events

A two-screen stage controller for cultural events — an operator screen and a visual screen, with all dance tracks, songs and background music cued and controlled live. Used for our community programs.
See all tools
Skills & agent reviews

I test the new agents so you don't have to

Claude skills, Hermes, OpenClaw, new models and the tools landing every week — hands-on, honest reviews. This section keeps filling itself as the research pipeline ships.

Agent review

The Hermes Agent Field Guide

The open-source AI agent that writes its own skills — install, setup, and what it actually does.

Read review Agent review

OpenClaw vs Hermes vs Claude Code

Which agent actually runs your AI business? An honest head-to-head.

Read review Model review

Claude Fable 5 — Field Guide

When the frontier model is worth it, the model picker, and the gotchas to avoid.

Read review Skill review

The Ultracode Field Guide

When 1,000 agents beat one genius — and the three settings that cap your spend.

Read review Skill review

Nested Subagents

Claude Code's depth-5 upgrade and five orchestration patterns that actually scale.

Read review
Voice · Multimodal · AR / VR

Where I spend my build hours

Voice AI agents, multimodal models, and the AR/VR space are what I research and build on most — and what a lot of you come to the channel for. LiveKit is my favourite, but I dig into Pipecat and the rest too. This is where the automated research, quick builds, and walkthrough videos live.

Try the voice agent Watch the builds

LiveKit

Favourite

Real-time voice & video infrastructure. The backbone of Knotie, KnoMind and HeyKleo — and the "Talk with me" agent on this site.

Pipecat

Exploring

Open-source framework for voice & multimodal conversational agents. Great for fast pipelines.

Multimodal Agents

Research

Agents that see, hear and act — vision + voice + tools stitched into one loop.

AR / VR

Frontier

Spatial computing and immersive interfaces — where voice agents go next.

Free guides

The playbook, in writing

Deep, practical guides — the kind I wish I'd had. All free to read, no email wall.

All guides
Method

Karpathy's Method

Build 10× faster with Claude: Spec → Verifier → Environment.

 Free kit

Sell AI to Local Businesses

The exact stack, offer, and 30-day plan — without building any of it yourself.

 Guide

Agent Tokenomics

How to price an AI agent for a client without guessing or losing money.

 Security

The Agentic Security Checklist

Lock down your AI agent before the enterprise demo.
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Got an idea, a project, or just want to compare notes? Start a real-time voice chat with my AI agent — it'll understand what you need and, if it makes sense, book time with me directly.

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New guides, tools, project launches, and the occasional build-in-public note — one short email whenever I ship something across Kno2gether, Knotie and the rest. No spam, unsubscribe anytime.

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Join the builders getting the playbook first.