Show HN: Free tool to mark points and polygon regions https://ift.tt/hkv5DIa

Show HN: Free tool to mark points and polygon regions For a game I'm developing I needed an easy way to create hotspot areas on images. So I hacked together a small tool to do so and before I knew it, I had created an entire app :-) It allows you to generate JSON or YAML from the coordinates you tack on the image. tack runs entirely in your browser, there is no server side component to it, so good in terms of privacy. Hope this is helpful. https://tack.pics May 6, 2026 at 12:59PM

Show HN: nocal is a calendar that turns your week into a workspace https://ift.tt/w4BDdab

Show HN: nocal is a calendar that turns your week into a workspace https://nocal.app/ May 9, 2026 at 01:48AM

Show HN: Concord – Feature rich TUI for discord https://ift.tt/ZHaU6hM

Show HN: Concord – Feature rich TUI for discord Concord is TUI client for discord with discord like layout (Servers / Channels / Messages / Members), vim keys, inline image previews via Kitty/iTerm2/Sixel, reactions, polls, threads, forums, and more!(except voice calls, will be implemented) Sits at ~20–40 MB idle. Concord is built with ratatui and crossterm. Here are features: - Login by token, email/password or QR code from the mobile app - Discord like layout : Servers / Channels / Messages / Members - Vim-style keys (hjkl, g/G, Ctrl+d/Ctrl+u, Tab to cycle panes), plus mouse support - Send, edit, delete, and reply to messages, with mention autocomplete - Threads, forum posts (active and archived), pinned messages, mark-as-read - Reactions (Unicode + custom emoji), poll voting, who-reacted lists - Inline image previews via Kitty, iTerm2, or Sixel protocols (halfblock fallback for anything else) - Avatar and custom emoji rendering, full-screen image viewer - Live typing indicators, unread + mention counts - Attachment downloads - Message notification If you try, please let me know your experience. https://ift.tt/Af5cEu3 May 9, 2026 at 01:22AM

Show HN: Transformer Math Explorer https://ift.tt/5uznr80

Show HN: Transformer Math Explorer https://ift.tt/WuKz8jy May 9, 2026 at 12:28AM

Show HN: Git for AI Agents https://ift.tt/WEoCLO3

Show HN: Git for AI Agents hi guys. been working on something i think is fundamentally missing in today's workflow with ai agents. vcs. i find myself struggling with questions that agents can't answer like "why did you do it?", "when did u delete this folder? why?", etc. or trying to /rewind (after a /compact...) or basically `bisect` to find when and why something was done by the agent in the current / previous session. just like git did for code, i think we are the same core capabilities with ai agents so... i developed an open source solution for that (currently supporting claude code) would love to get feedback, contribution or maybe other ideas or solutions you find for those problems. https://ift.tt/F4wU2DG May 8, 2026 at 04:15AM

Show HN: Crit – local review tool for agent plans and code diffs https://ift.tt/G7EAUJZ

Show HN: Crit – local review tool for agent plans and code diffs Crit is a single-binary CLI that opens your file or code diffs in a browser with GitHub-inspired interface. Your favourite agent acts on the feedback and responds back - continue until you're happy. I've been building this for a few months now and it's been helping me a lot juggling parallel conversations with agents, making it easier to actually review the plans they generate and the resulting code - all before it hits GitHub. It also allows you to export the plans to a hosted service (which you can self-host for privacy), to solicit feedback from your team. No account needed, and reviews are automatically deleted after 30 days of inactivity. https://crit.md/ May 8, 2026 at 02:56AM

Show HN: NanoCorp – Create autonomous companies run by AI https://ift.tt/HUBGrqA

Show HN: NanoCorp – Create autonomous companies run by AI https://www.nanocorp.so May 8, 2026 at 02:19AM