Show HN: My open-world voxel game with a magic system, playable in the browser https://ift.tt/tlfig7S

Show HN: My open-world voxel game with a magic system, playable in the browser https://ift.tt/iMoJWtH April 1, 2026 at 12:08AM

Show HN: AI Spotlight for Your Computer (natural language search for files) https://ift.tt/loecZn7

Show HN: AI Spotlight for Your Computer (natural language search for files) Hi HN, I built SEARCH WIZARD — a tool that lets you search your computer using natural language. Traditional file search only works if you remember the filename. But most of the time we remember things like: "the screenshot where I was in a meeting" "the PDF about transformers" "notes about machine learning" Smart Search indexes your files and lets you search by meaning instead of filename. Currently supports: - Images - Videos - Audio - Documents Example query: "old photo where a man is looking at a monitor" The system retrieves the correct file instantly. Everything runs locally except embeddings. I'm looking for feedback on: - indexing approaches - privacy concerns - features you'd want in a tool like this GitHub: https://ift.tt/TX38f2s Demo: https://deepanmpc.github.io/SMART-SEARCH/ March 30, 2026 at 08:43PM

Show HN: Memv – Memory for AI Agents https://ift.tt/n2N1qyw

Show HN: Memv – Memory for AI Agents memv is an open-source Python library that gives AI agents persistent memory. Feed it conversations; it extracts knowledge. The extraction mechanism is predict-calibrate (Nemori paper): given existing knowledge, it predicts what a new conversation should contain, then extracts only what the prediction missed. v0.1.2 adds the production path: - PostgreSQL backend (pgvector for vectors, tsvector for text search, asyncpg pooling). Single db_url parameter — file path for SQLite, connection string for Postgres. - Embedding adapters: OpenAI, Voyage, Cohere, fastembed (local ONNX). Other things it does: - Bi-temporal validity: event time (when was the fact true) + transaction time (when did we learn it), following Graphiti's model. - Hybrid retrieval: vector similarity + BM25 merged with Reciprocal Rank Fusion. - Episode segmentation: groups messages before extraction. - Contradiction handling: new facts invalidate old ones, with full audit trail. Procedural memory (agents learning from past runs) is next, deferred until there's usage data. https://ift.tt/fG2A4Pk March 30, 2026 at 10:39PM

Show HN: Coasts – Containerized Hosts for Agents https://ift.tt/JS1QX3j

Show HN: Pglens – 27 read-only PostgreSQL tools for AI agents via MCP https://ift.tt/jonbYkV

Show HN: Pglens – 27 read-only PostgreSQL tools for AI agents via MCP https://ift.tt/0SAH438 March 29, 2026 at 10:00PM

Show HN: Timezone App – Visual meeting scheduler for distributed teams https://ift.tt/6C4OGwL

Show HN: Timezone App – Visual meeting scheduler for distributed teams Scheduling meetings across multiple time zones has always been painful for me, especially across daylight saving time transitions. So I built a visual timeline that makes it easy to find overlapping availability. Add your locations, drag to select a time range, and share a link. Recipients see the proposed times in their local time zone automatically. A few things that might be interesting: * Location search over GeoNames with fuzzy matching using weighted edit distance, so typos and partial names still resolve correctly. * Shareable links encode the selected time range and locations in a base62 payload to keep URLs short and stateless — no database lookup needed. * Handles the annoying edge cases: DST transitions use the IANA timezone database, and 15/30-minute UTC offsets (Nepal, India, Newfoundland) work correctly. * Google Calendar and Outlook integration, but all calendar data is fetched and processed entirely in the browser. Events are never fetched or stored on the server. Would love feedback on what's useful, not useful, or could be improved! https://timezoneapp.co/ March 29, 2026 at 11:36PM

Show HN: Octopus, Open-source alternative to CodeRabbit and Greptile https://ift.tt/6MdLxti

Show HN: Octopus, Open-source alternative to CodeRabbit and Greptile Hey HN, we built Octopus an open-source, self-hostable AI code reviewer for GitHub and Bitbucket. It uses RAG with vector search (Qdrant) to understand your full codebase, not just the diff, and posts inline findings on PRs with severity ratings. Works with Claude and OpenAI, and you can bring your own API keys. Video: https://www.youtube.com/watch?v=HP1kaKTOdXw | GitHub: https://ift.tt/WyTbOLE https://ift.tt/gZDhB75 March 28, 2026 at 06:50PM