30 free, open-source GitHub repos that replace $180K+/yr of paid software — your CRM, BI, design, e-signatures, email, passwords and AI infra. With the repo, the bill it kills, and the exact command to deploy each.

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Every repo from all three parts of the series in one field guide. The 10 newest picks (Twenty, Appsmith, Apache Superset, DocuSeal, Penpot, AFFiNE, Cap, Listmonk, Qdrant, Vaultwarden) come with the exact deploy command and what they kill — Twenty replaces Salesforce ($100–165/user/mo), Appsmith replaces Retool ($50/user/mo), Superset replaces Tableau/Looker (up to $150K/yr), DocuSeal replaces DocuSign, Penpot replaces Figma, AFFiNE replaces Notion + Miro, Cap replaces Loom, Listmonk replaces Mailchimp, Qdrant replaces Pinecone, Vaultwarden replaces 1Password. Plus a reference table of the other 20 from Parts 1 & 2, a weekend self-host checklist (VPS, Docker, HTTPS, backups, one tool at a time), and the honest when-NOT-to-self-host note. Together they replace over $180,000/yr of software for the cost of a small server.

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