Show HN: Aigis – 43% of MCP servers have injection payloads; I built a firewall
Show HN: HN Audio to video AI generator
Show HN: Nerve – self hosted runtime for AI agents
Show HN: OpenBrief – Local-first video downloader/summarizer
Show HN: A Word Matching Game
Show HN: Fungible – A local personal finance app in the terminal
Show HN: Unsiloed AI – #1 on OlmOCR-Bench
Show HN: The Grid in 4.5 Hours
Show HN: GerbDiff – Visual diff tool for PCB Gerbers
Show HN: Built a tool to create brand-consistent images using AI
Show HN: macOS Screensaver to play random Jellyfin content
Show HN: Bae – AI companion built around persistent memory architecture
Show HN: TryPost – open-source Social Media Scheduler
Show HN: GoogleCalendar Sidebar with multi-auth and 2way sync – Obsidian Plugin
Show HN: I made Pokémon but with real animals in the real world
Show HN: Tussup.com – TikTok for Debates
Show HN: HypeCheck – I built a tool that fact-checks supplement marketing
Show HN: Aquifer – a control plane for agentic API traffic
Show HN: Hypergraph – directed hypergraph library in Rust (40 graph algorithms)
Show HN: Cursed Browser – a VLM reads the HTML and hallucinates the page
Show HN: Linear Chess – Normal Chess, on a 1D board
Show HN: Browser-based Glider Sim
Show HN: A web to see nearby TFL trains
Show HN: Feynman AI research Assistant plugin for Obsidian
Show HN: SynapCores – AI-native database (vector, graph, SQL, AutoML, LLM)
Show HN: Complete Family Tree Viewer
Show HN: AutoMaxFix – controlled AI repair loop that won't eat your migrations
Show HN: Plonk – Spotlight Search style Python interpreter
Show HN: Open Satchel – local-first PDF editor (early)
Show HN: Hackobar – One feed for AI news