The build library

Tools worth your weekend

The AI builds we actually use, with finance and diligence at their core. Each one shows what it does, who it is for, and how to run it. Try one yourself. When you want it wired into your real stack, that is the engagement.

Free to run Finance and diligence first Run by us before it posts

Categories: Workflow automation · Local AI · RAG and retrieval · Document AI · Analytics and BI · Finance and ops

Workflow automation

n8n

Open-source workflow automation. Connect apps, APIs and AI steps in one flow. A self-hosted Zapier you own.

Local AI

Ollama

Run open language models on your own machine or server. Keeps data in-house for sensitive work.

Local AI

LiteLLM

Call Anthropic, OpenAI, Google and 100+ models through one consistent API, with cost tracking and fallbacks.

RAG and retrieval

Chroma

An open vector database that powers retrieval, so a model can answer from your documents with citations.

RAG and retrieval

LangChain

A framework for building LLM applications: retrieval, tools, agents and chains, with broad integrations.

Document AI

Unstructured

Turns PDFs, Word files, emails and scans into clean, structured text that AI workflows can use.

Document AI

Marker

Converts complex PDFs, including tables and figures, into clean Markdown for AI processing.

RAG and retrieval

AnythingLLM

An all-in-one application to chat with your documents, with workspaces and permissions, self-hosted.

Analytics and BI

Metabase

Open-source business intelligence. Dashboards and questions over your data, no SQL required to start.

Finance and ops

ERPNext

A full open-source ERP: accounting, inventory, CRM, HR. A serious alternative to costly suites.

Workflow automation

Cal.com

Open-source scheduling you can self-host and embed. A Calendly alternative that you own.

Finance and ops

Documenso

Open-source document signing. A self-hosted DocuSign alternative for contracts and engagement letters.

Document AI

Firecrawl

Turns websites into clean, structured data for AI, handling JavaScript pages other scrapers miss.

Analytics and BI

Plausible Analytics

Privacy-friendly, cookie-free web analytics you can self-host. A lightweight Google Analytics alternative.

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