← ac0.ai
EN/ES

Field Notes

Things we found that actually work. Picked up from the internet, tested on real projects.

Google's AI Knows What Your Files Really Are

Google open-sourced the AI it uses to scan billions of Gmail and Drive uploads — and it identifies file types with 99% accuracy in the blink of an eye.

Apr 15, 2026via github
open-sourceAItools

A text prompt walks in. A finished video walks out.

An open-source project that works like a tiny film studio on your computer — you describe a video, it writes the script, plans the shots, and produces the whole thing while you sleep.

Apr 14, 2026via github
AIautomationopen-source

A model that learned to read markets the way ChatGPT learned to read text

Kronos is an open-source AI trained on 12 billion candlestick records from 45 global exchanges — and it forecasts prices better than anything else in its class.

Apr 13, 2026via github
AIfinanceforecasting

What if your docs actually worked?

A small YC-backed agency figured out how to fix broken developer docs in weeks, not months — by letting AI do the tedious parts and humans do the thinking.

Apr 12, 2026
AItoolsworkflow

Teach Your AI to Speak Less, Think More

A tiny add-on makes Claude respond like a caveman — and somehow that cuts costs by up to 87% while keeping every useful answer intact.

Apr 11, 2026via github
AItoolsworkflow

A Tiny Download Manager That Respects Your Machine

The best download manager around went quiet in 2023 — someone just rebuilt it from scratch, and it's smaller, faster, and free.

Apr 10, 2026via github
open-sourcetoolsself-hosting

Your AI Finally Remembers You

A free tool that gives AI assistants a real memory — so they stop forgetting everything the moment you close the chat.

Apr 9, 2026via github
AImemoryopen-source

Graphify for Claude Code: a free, open-source codebase knowledge graph

Free, open-source Claude Code skill that turns any codebase into a knowledge graph. Ask questions in plain English, runs 71x cheaper, works with a local mode.

Apr 8, 2026via github
AItoolsworkflow

A real email address for your AI agent

Molted gives AI agents their own managed mailbox — with built-in safety rails so they can't spam your contacts or leak sensitive data.

Apr 7, 2026via web
emailAIautomation

One person. One AI. 740 job offers evaluated.

Someone built an AI-powered job search system for themselves, used it to evaluate 740 offers and write 354 tailored CVs — then got hired as Head of Applied AI.

Apr 7, 2026via github
AIworkflowautomation

A Design File That Teaches AI What Your Brand Looks Like

A plain text file called DESIGN.md can now tell an AI agent exactly how a website should look — colors, fonts, spacing — so it builds interfaces that actually match your style.

Apr 6, 2026via github
AItoolsworkflow

Drop a receipt. Get tidy accounts.

TaxHacker is a free, self-hosted app that reads any receipt or invoice — in any language — and turns it into clean accounting data, automatically.

Apr 5, 2026via github
self-hostingopen-sourceAI

A powerful AI that fits in your pocket — literally

Google just released a family of AI models you can run on your own devices, own completely, and use commercially — no subscriptions, no restrictions.

Apr 4, 2026
open-sourceAIself-hosting

Beautiful product demos, free forever

OpenScreen does what expensive demo software does — zoom effects, clean backgrounds, polished exports — at zero cost and with no watermark.

Apr 3, 2026via github
toolsopen-sourcevideo

One tool turned a solo coder into an overnight dev team

A small open-source tool called OMX quietly turned a single AI coding assistant into a coordinated team of agents — and someone used it to do a week's worth of work in one night.

Apr 2, 2026via github
AIautomationworkflow

The invisible ruler for text on screens

A tiny open-source tool just went viral for solving something deceptively boring: measuring how tall a block of text is, without making the browser stutter.

Apr 1, 2026via github
open-sourcetoolsworkflow

An hour of voice, handled in one breath

Microsoft quietly released a voice AI toolkit that can transcribe a full hour of audio — speakers, timestamps, and all — without breaking it into pieces.

Mar 31, 2026via github
AIopen-sourcevoice

Plan a trip together — without handing your data to anyone

TREK is a free, self-hosted trip planner your whole team can use in real time — maps, budgets, weather, packing lists — and it lives on your own server.

Mar 30, 2026via github
self-hostingtoolsopen-source

When AI coding sessions grow up and become team processes

OpenWork turns solo AI coding sessions into something a whole team can audit, repeat, and trust.

Mar 29, 2026via github
open-sourceAIworkflow

One Plugin, Thirty-Two AI Teammates

A new plugin for Claude Code gives you an instant team of 32 specialized AI agents — architect, designer, librarian, and more — without writing a single line of setup.

Mar 28, 2026via github
AIMCPworkflow

A Query Language That Speaks Human, Not Code

TinyFish built infrastructure for AI agents to interact with the live web at scale — and AgentQL lets you point at any element on any page using plain English instead of brittle CSS selectors.

Mar 27, 2026via github
AIautomationweb scraping

One command. Eight sources. A real picture of right now.

A single command sends an AI agent across Reddit, YouTube, X, and five other sources — and brings back a grounded, cited summary of what people are actually saying in the last 30 days.

Mar 27, 2026via github
AIresearchworkflow

The Spanish Tech Gap: Why Expat Founders Struggle with AI

Running a business in Spain but working in English? There's a hidden friction when it comes to high-end AI and automation. Here's why it happens and how to bridge it.

Mar 26, 2026
BusinessSpainAI Strategy

Reading PDFs Without Sending Them Anywhere

A new PDF parser runs entirely on your own machine, handles messy real-world documents surprisingly well, and doesn't need an internet connection or an API account.

Mar 26, 2026via github
AIopen-sourceself-hosting

Your Calendar, Contacts, and Messages — Inside Claude

A small Mac app quietly bridges the gap between Claude and your actual life — calendar, messages, contacts, reminders, and location included.

Mar 25, 2026via github
MCPAItools

The AI That Actually Does the Work

DeerFlow is an open-source AI agent that doesn't just answer questions — it finishes projects.

Mar 24, 2026via github
AIautomationopen-source

A full trading firm, made of AI agents

Researchers built an open-source system where a whole cast of AI specialists — analysts, a trader, a risk manager — debate each other and arrive at a single investment decision.

Mar 23, 2026via github
AImulti-agentfinance

An AI That Works When the Internet Doesn't

Project N.O.M.A.D. bundles an AI assistant, offline Wikipedia, maps, and medical references into a self-contained computer that runs anywhere — no Wi-Fi, no cloud, no tracking.

Mar 22, 2026via github
self-hostingAIopen-source

Your documents, your server, your rules

OpenRAG lets you build a private search brain for all your business documents — PDFs, audio recordings, spreadsheets — without sending a single file to anyone else's cloud.

Mar 21, 2026via github
self-hostingopen-sourceAI

How to see what you pasted in Claude Code

Claude Code collapses anything longer than a few lines when you paste. One key changes that.

Mar 21, 2026
AItoolsClaude Code

A Dashboard for Your AI Assistant's Energy Levels

A tiny open-source tool that shows you exactly how much of Claude's attention budget you've used — before you run out mid-task.

Mar 20, 2026via github
AItoolsworkflow

A classroom full of AI teachers — built by Tsinghua, free for everyone

Researchers at one of China's top universities just released a tool that turns any document or topic into a live, interactive AI classroom — complete with teachers, curious classmates, and quizzes.

Mar 19, 2026via github
AIeducationmulti-agent

Crucix: a free, self-hosted OSINT intelligence terminal

Crucix is a free, open-source OSINT intelligence terminal you self-host. Monitors 27 live feeds (fires, flights, markets, conflicts) and pings you on Telegram.

Mar 18, 2026via github
OSINTself-hostingopen-source

A browser built for robots, not humans

Lightpanda runs 11x faster than Puppeteer and uses 9x less RAM. An open-source headless browser purpose-built for AI agents and web scraping.

Mar 17, 2026via github
automationAIopen-source

One AI, Eight Hats

Garry Tan's personal Claude setup gives one AI 8 specialist roles - architect, reviewer, security auditor and more. Open-source, free to copy.

Mar 16, 2026via github
AIagentsopen-source

The Filing Cabinet Your AI Agent Actually Needs

ByteDance just open-sourced a smarter way for AI agents to store and retrieve what they know — and it could quietly cut costs while making agents a lot more reliable.

Mar 15, 2026via github
AIopen-sourcedatabase

The AI Panel That Argues Before It Answers

A 20-year-old student built a self-hosted brand monitoring tool where AI agents argue with each other before writing your report — and the internet noticed.

Mar 14, 2026via github
brand monitoringmulti-agentopen-source

Teaching AI Agents to Use Desktop Software

A new tool lets AI agents operate desktop software like GIMP or Blender the same way a human would — but faster, quietly, and without anyone touching a mouse.

Mar 13, 2026via github
AIautomationworkflow

The AI Agent That Remembers What It Learned

Hermes Agent remembers past conversations, learns from mistakes, and connects to Slack, Discord and Telegram. Free, self-hosted, built by Nous Research.

Mar 12, 2026via github
AIself-hostingopen-source

A Full AI Team, Ready to Hire

100+ ready-made AI agent personas in one repo - frontend devs, brand managers, growth leads. Copy-paste into Claude, ChatGPT or any AI tool.

Mar 11, 2026via github
AIautomationworkflow

A Simulated World Full of Thinking Agents

MiroFish builds a tiny parallel world of thousands of AI characters to predict what happens next — in markets, public opinion, or even unfinished stories.

Mar 10, 2026via github
AIsimulationforecasting

An AI that runs 100 experiments while you sleep

Andrej Karpathy just released a tiny tool that lets an AI agent run experiments on its own, all night, and hand you the results by morning.

Mar 9, 2026via github
AIautomationworkflow

AI agents that can't leak your passwords — even if tricked

IronClaw is an open-source runtime that lets AI agents do real work without ever seeing — or accidentally exposing — your API keys and secrets.

Mar 8, 2026via github
AIautomationopen-source

What if your whole company was run by AI agents?

Paperclip lets you build a fully staffed AI organisation — with a real org chart, budgets, and accountability — that actually runs itself.

Mar 7, 2026via github
AIautomationopen-source

The AI That Tries to Break Your App Before Anyone Else Does

Shannon is an open-source AI that actually attacks your own web app to find real security holes — not just a list of warnings, but proof that something is broken.

Mar 6, 2026via github
AIopen-sourcesecurity

Your Brand on Reddit, Without the Hours

A free, set-it-and-forget-it system that watches Reddit for your brand name so you don't have to.

Mar 5, 2026
automationworkflowtools

A news dashboard that thinks — and never phones home

WorldMonitor pulls together global news, markets, and geopolitical signals into one screen — with AI analysis that runs entirely on your own machine.

Mar 4, 2026via github
open-sourceAItools

The invisible wall that keeps AI agents from breaking things

Alibaba just open-sourced the safety layer that lets AI agents actually do things — without putting your real systems at risk.

Mar 3, 2026via github
AIopen-sourceautomation

Your WiFi Router Can Already See You

A new open-source project turns an ordinary WiFi router into a sensor that can detect where people are, how they're breathing, and whether someone has fallen — no camera required.

Mar 2, 2026via github
AIopen-sourcetools

Your codebase, mapped — without leaving your browser

GitNexus turns any code repository into a visual map your AI assistant can actually read — privately, for free, in your browser.

Mar 1, 2026via github
AItoolsopen-source

Your Spreadsheet Can Now See the Future

Google quietly embedded a powerful AI forecasting model inside Google Sheets — and you don't need to know anything technical to use it.

Feb 28, 2026
AItoolsworkflow

Teaching your AI coder to actually think before it types

A free tool that gives your AI coding assistant a real methodology — so it stops winging it and starts working like a disciplined engineer.

Feb 27, 2026via github
AIopen-sourceworkflow

The Web Scraper That Fixes Itself

Scrapling watches websites change and quietly updates itself — so your data pipelines don't break every time a competitor redesigns their homepage.

Feb 26, 2026via github
automationself-hostingopen-source

What if your AI assistant actually read the document — like a human?

A new open-source tool lets AI navigate long documents the way an expert would — by understanding structure, not just scanning for similar words.

Feb 25, 2026via github
AIopen-sourceMCP

The Instructions Behind the Curtain

Someone published the secret instructions powering Cursor, Claude, Lovable, and 25 other AI tools — and it's the most revealing thing published about AI this year.

Feb 24, 2026via github
AItoolsopen-source

Windmill turns small automations into proper tools

An open-source platform that takes your team's little scripts and automations and gives them a proper home — with scheduling, logs, and a real interface.

Feb 23, 2026
open-sourceworkflowautomation

n8n: connect everything, pay nothing

n8n lets you automate anything between your apps — Slack, email, CRM, spreadsheets. It's free, it's visual, and you own the whole thing.

Feb 22, 2026
workflowautomation

Claude Code: when AI actually builds things for you

Anthropic's tool lets Claude read your entire project, make changes, and even publish updates — while you describe what you want in plain English.

Feb 22, 2026
AItools

Scheduled tasks that run themselves — inside your database

Supabase can run tasks on a schedule — daily reports, data cleanup, reminders — without any extra tools or monthly fees.

Feb 21, 2026
databaseautomation

Cloudflare gives you a global server network — for free

100,000 requests a day, storage, scheduled tasks, and your code runs in 300+ cities worldwide. No monthly bill.

Feb 20, 2026
hostingtools

Your own Zapier, for free — and it talks to AI

Activepieces is like Zapier but free, open source, and its 280+ integrations work directly with AI agents like Claude.

Feb 20, 2026
automationopen-sourceAI agents

Let AI write your follow-ups

Your CRM knows when you last talked to someone. AI can use that to write follow-ups that actually sound like you.

Feb 19, 2026
automationAIemail