pgvector
How vibe coders and indie builders use pgvector: 45 projects built with it since May 2026.
Projects built with it
45
Share of stated stacks, 4 wks
0.3%
Last 4 weeks vs 8 before
too few to tell
Add-ons built for it
0
Share of stated stacks, per week
Share rather than counts, so changes in how many posts a subreddit lets through don't show up as trends.
Often used with
- PostgreSQL 38
- Next.js 15
- React 13
- Supabase 12
- OpenAI API 10
- FastAPI 10
- Claude API 8
- Gemini API 7
What's built with it
Latest projects built with pgvector
- AI SupportPro — Answers customer support chats from company documents using retrieval and hands refund or complaint cases to human support tickets.“I built an open-source, multi-tenant AI Customer Support SaaS with grounded RAG and automatic ticket escalation (FastAPI + React 19)”
- TabX — Adds an AI side panel to Chrome that semantically searches past visited pages, summarizes content, groups browsing sessions, and suggests next tabs.“I built the missing AI companion for Chrome because Google just wouldn't. Get the power of Dia and Comet in Chrome”
- pre-mortem — Reviews a pending company decision against recorded past decisions and their outcomes, flagging comparable ones that went badly and citing their IDs, or refusing when no precedent exists.“I built a memory-backed reviewer that tells you what your own company already got wrong”
- ReplyWisely — Finds X posts where people describe a problem a user's product solves and drafts replies in the user's voice for approval.“I cut my Chrome extension down to one feature: it finds X posts where your product is the answer, and drafts the reply in your voice”
- Co-Founder — Coordinates multiple specialized AI agents, such as research, writing, marketing and data analysis, under a CEO orchestrator agent to help with business tasks.“I built an AI “co-founder” that coordinates multiple specialized agents to help build a business”
- Shree AI OS — Provides a Java 21 runtime SDK for backend AI applications, with hybrid RAG over PostgreSQL and pgvector, episodic and semantic memory, and a planning pipeline.“I built an open-source deterministic AI runtime for Java 21 — looking for architecture feedback”
- aialreadydidit — Hosts a free open-source app store of LLM-generated apps with source, installers, and original prompts, and exposes an API and MCP server that tell coding agents whether to download, fork, or build an app.“I made a free app store where every app was written by an AI, with the prompt included”
- NewsLens — Groups news articles from many outlets into evolving stories and lets users explore them on a story map with a citation-backed Q&A.“I was tired of news sites treating every article like a separate story, so I built a site that groups coverage into evolving stories”
- Ciele — Builds embeddable AI chat widgets that answer only from an organization's own content and cite their sources, escalating to human help desks when needed.“I built an open-source alternative to the expensive "AI assistant for your organization" platforms”
- Clevernote — Answers natural-language questions over a personal corpus of notes, photos, audio and PDFs, returning the source note or transaction each answer came from.“A stranger told me my search feature would only replace "I can't find it" with "I found something plausible". He was right.”
- Launchpad — Provides a Next.js starter with prewired auth, payments, database, email, and storage, switchable across six site types via one config value.“Built a Next.js 15 starter with auth, payments, storage, and 6 site types built in — launching it today”
- Thalmas — Filters news against a user's stated interests and sends at most three push notifications a day, only for stories that affect something the user uses or holds.“I built a news app that interrupts me 3 times a day, at most”
- Answer Arena — Runs the same question and corpus through two configurable RAG setups and shows retrieved passages, answers, timing, cost, and errors side by side.“Compare RAG setups using the same question and corpus”
- i built this side project for… — Answers questions about first-principles thinking using a RAG chatbot grounded in interviews and articles.“i built this side project for learning, now just confused, is it worth it to launch it”
- Watch Darkly — Recommends horror films by scoring them on five separate axes and matching them to a taste vector built from a user's favorites.“I built a horror-only film site that recommends by your taste as a vector and scores films on 5 separate axes”
Pitched as alternatives to pgvector
- friday_memory — Stores text chunks and embeddings in SQLite and runs in-memory cosine similarity search in pure Go for retrieval.“Why I skipped Docker/Chroma and built in-memory Cosine Vector Search in pure Go”