Best open-source Next.js SaaS + AI starters (2026 scorecard)
A hands-on July 2026 scorecard of ten open-source and source-available Next.js SaaS and AI starters, ranked across six axes with real GitHub stars and exact licenses.
Curator notes on stacks worth shipping, each one picked, tested and documented.
63 posts
A hands-on July 2026 scorecard of ten open-source and source-available Next.js SaaS and AI starters, ranked across six axes with real GitHub stars and exact licenses.
A hands-on July 2026 review of Convex, the reactive backend and database for Next.js: five deploy paths, real free-tier cost math, the FSL license fine print, and where it loses to Supabase and Neon.
ShipGarden's hands-on June 2026 review of Inngest v1.34 (v1.34.0 stable shipped June 29, JavaScript SDK v4.11.0 on npm) as the open-source durable-execution platform for Next.js apps. Five deploy paths, real cost-per-10k-executions math, an honest compare-side against Trigger.dev v4, the SSPL license question, and where v1.34 still bites.
ShipGarden's hands-on June 2026 review of Refine v5 (@refinedev/core@5.0.12) as the open-source React framework for an admin or internal-tool starter. Five deploy paths, real per-month costs, an honest react-admin / Appsmith / ToolJet comparison, and the v4-to-v5 migration story you should plan for.
ShipGarden's hands-on June 2026 review of Trigger.dev v4 (v4.4.6 stable, v4.5.0-rc.7 in flight) as the open-source background-jobs platform for Next.js apps. Five deploy paths, real cost-per-10k-runs math, an honest read against Inngest and Convex, and where v4 still bites.
ShipGarden's hands-on June 2026 review of Medusa.js v2 (v2.17.1) as the open-source headless commerce backend for Next.js. Five deploy paths, real cost-per-100-orders numbers, payments via Stripe Paddle and Polar.sh, and the v1-to-v2 migration story you don't want to volunteer for.
Hands-on June 2026 review of the LlamaIndex.TS RAG starter for Next.js. The starter still works, the project is officially deprecated, and the deploy-paths matrix below has three options that still ship. Honest cost numbers, vector store picks, and what to point a fresh codebase at instead.
ShipGarden's hands-on review of CopilotKit as a Next.js agent UI in June 2026. The setup walkthrough, the four comparison axes, three deploy paths, and where it loses to Vercel ai-chatbot and Mastra.
Curator review of Twenty CRM v2.14.0 (June 2026): the open-source Salesforce alternative now with built-in AI agents. Four fork lanes for the solo founder.
Open SaaS 0.24 by Wasp shipped June 11, 2026 with 14.7k stars and the most batteries-included free SaaS starter on the open-source shelf. We curated it into a ShipGarden gallery entry with three solo-founder paths: ship-as-is, replace the Wasp pieces, or escape the DSL. Honest trade-offs, including when Open SaaS is the wrong pick.
Mastra is the open-source TypeScript agent framework hitting 25.2k GitHub stars and v1.42.0 (June 12, 2026). We curated its starter into a gallery entry with three real deploy paths: clone the repo, one-click on Vercel, or ship as a deployable Next.js app via Totalum. Trade-offs in plain English, no hand-waving.
An AI agent app is six moving parts: a Next.js shell, a model SDK, a tool-calling layer, a durable job runner for long tasks, a vector store for memory, and a streaming UI. Wire those and you can ship something genuinely useful in a weekend. The hard part isn't the model; it's the plumbing around it that keeps a slow, flaky call from taking your whole app down. Here's the stack and the four traps that eat the most time.