open-source on Hacker News

609 titles from 552 authors in the last 30 days, with 576 distinct links and 239 Show HN.

Counts titles, it does not confirm facts. Open the source before concluding anything.

Projects on this term

The score comes from our model.

• Show HN: hfmodem – open-source PACTOR-3 and VARA compatible waveform generator · score 8.3

  hfmodem is an open-source project implementing HF radio modems for PACTOR-3, VARA, ARDOP, and other waveforms, along with a station control framework and conformance bench. It enables software-defined radio communication for amateur radio operators, including Winlink email over HF, with rigorous interoperability testing and detailed protocol documentation.

• Show HN: Graft – open-source source control for agent-scale monorepos · score 8.3

  Graft is an open-source implementation of Anthropic's redesign for source control in agent-scale monorepos, shifting heavy operations like history, diffs, and merges to the server via HTTP APIs. It eliminates local clones and packfiles, using changesets in a write-ahead log and lock-free landing for massive concurrency, with impressive benchmark results against Git.

• Show HN: Decision Studio – LM Studio for open-source, Jev-style decision models · score 8.3

  Bud Decision Studio is a desktop application for running open-source decision models locally, similar to LM Studio but for Jev-style 'System One' models. It provides a playground, template management, evaluation, history, API server, and on-device training with LoRA, all accessible through a polished GUI and CLI.

• Show HN: Loböle, open-source parametric CAD that AI agents can drive · score 8.0

  Loböle is an open-source parametric CAD system built on OpenCASCADE with a Vulkan viewport, exposing a unified command layer accessible from its GUI, Python scripts, and AI agents via JSON-RPC and MCP. It covers sketches, assemblies, FEM simulation, CAM toolpaths, git-backed versioning, and multi-format interchange, and it ships impressive generator-built models like an OM615 diesel and an automatic watch. The agent-driveable architecture is a genuinely novel angle for desktop CAD.

Recent titles

1. Show HN: Bowerbird – Open-source NotebookLM for any model, with checked quotes
   2026-11-01 · github.com · HN discussion
2. Context Mode – An Open-Source MCP Server That Reduces AI Coding Context Usage
   2026-11-01 · github.com · HN discussion
3. Show HN: AIOps Cockpit – An open-source AI SRE with human-in-the-loop safety
   2026-11-01 · github.com · HN discussion
4. Show HN: Geop – Open-source Nurbs CAD with MCP (MicroDuck example)
   2026-11-01 · app.geop-cad.dev · HN discussion
5. Screen Capture for macOS – Open-source sticky-aware scrolling capture
   2026-11-01 · github.com · HN discussion
6. Medo: A modern UHD 4K open source Media editor for Haiku OS in less than 1.44MB
   2026-11-01 · github.com · HN discussion
7. Wrangler – Open-Source macOS Window Manager (Swift, Grid HUD, Auto-Tiling)
   2026-10-31 · github.com · HN discussion
8. Common Desktop Environment available now as open-source
   2026-10-31 · sourceforge.net · HN discussion
9. Show HN: Castov – Open-source dev tools and AI secret shield with zero telemetry
   2026-10-31 · castov.com · HN discussion
10. Show HN: Hey Spark – open-source voice assistant for your laptop, any LLM brain
    2026-10-31 · github.com · HN discussion
11. OpenSC4: An open-source reimplementation of the SimCity 4 engine in Rust
    2026-10-31 · github.com · HN discussion
12. Ask HN: I'd like to request Microsoft open source Windows XP
    2026-10-31 · HN discussion
13. Show HN: InBox Wall – A local-first, open-source email sanitizer for AI agents
    2026-10-31 · github.com · HN discussion
14. Ask HN: What are your go-to free/open-source alternatives to $20/mo AI SaaS?
    2026-10-31 · HN discussion
15. Open Science: The open-source AI workbench for scientific research
    2026-10-31 · github.com · HN discussion
16. Bootstrap: Triaging Open Source with Agents
    2026-10-31 · blog.getbootstrap.com · HN discussion
17. Show HN: Staxless – Open-source microservice SaaS boilerplate
    2026-10-30 · github.com · HN discussion
18. New HN: Moju – Open-source physics auditing for CFD and SciML training data
    2026-10-30 · github.com · HN discussion
19. Playscii – open-source ASCII art/animation/game creation
    2026-10-30 · jplebreton.com · HN discussion
20. Open-source OpenAPI SDK generator
    2026-10-30 · speakeasy.com · HN discussion
21. An open-source firewall for the next LiteLLM attack
    2026-10-30 · strix.ai · HN discussion
22. Open Rock – An open-source AI chat interface
    2026-10-30 · github.com · HN discussion
23. Smelt: An open-source coding agent that stays light
    2026-10-30 · smeltagent.dev · HN discussion
24. Tacto One – open-source Hand Exoskeleton
    2026-10-30 · github.com · HN discussion
25. Show HN: Convert Anthropic and OpenAI bill exports to FinOps FOCUS (open source)
    2026-10-30 · github.com · HN discussion
26. Casdoor v4 – open-source IAM with OAuth for MCP servers
    2026-10-30 · casdoor.ai · HN discussion
27. Tidy – An open-source agentic development platform with a built in design canvas
    2026-10-30 · github.com · HN discussion
28. OpenMausBot Open-source Grok Bot alternative with a virtual machine
    2026-10-30 · mausbot.com · HN discussion
29. Show HN: PicoPlayer – A tiny, open-source website for playing quality webgames
    2026-10-30 · picoplayer.net · HN discussion
30. Show HN: Outlayr, an open-source expense tracker where each entry is a sentence
    2026-10-30 · github.com · HN discussion

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