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Projects from HN posts

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1689 projects published

Contextify

Cross-platform application (Linux, macOS, Windows) that files AI chats into a database the AI can read via a skill or MCP. It backs up Claude Code and Codex conversation transcripts (JSONL) into a complete, manageable history, letting users resume unfinished work, recover intent and scope, verify tasks got done, and recall how past problems were fixed through a 'total recall' skill (/total-recall or $total-recall). It can be self-hosted with all data kept local, or synced across desktops, laptops, and machines via the source-available Contextify Cloud server. Upcoming work includes an expanded Windows app and integration for a third-party local LLM.

Builders @bredren

AI & automationDeveloper toolsProductivity

Future-Secured Search Hub

A new search hub that curates and links to external resources, which currently lists SourceLibrary at the bottom of its page.

Builders @adrianwaj

Umamo

A free and open-source, cross-platform rigging editor for 2D puppet animation, built as a drop-in replacement for the Live2D Cubism Editor. It is fully compatible with Live2D's CMO3 and MOC3 file formats so it works within the existing Cubism market share. The v0.3.0 release adds a full pipeline for ingesting layered artwork plus texture atlas packing and editing. Currently in early alpha, with a planned Christmas release of an end-user workable experience.

Builders @Washuu

Creative tools & media

Profligacy (Korg Prophecy emulation)

Software emulation of the Korg Prophecy, an old digital synth, built as part of a set of emulations of vintage digital synth hardware. A demo video and source repository are provided.

Builders @thrawoway14159

Creative tools & media

maroatlas.com

A design studio where customers can purchase custom 3D wood maps directly from the maker, available at maroatlas.com.

Builders @trubalca

Business & financeLifestyle & hobbies

RunCanary

This tool provides adversarial companions to coding agents that stress-test agents, software, and code, helping uncover blind spots, broken functionality, and security issues in a left-shift mode before problems surface later.

Builders @ashgam

AI & automationDeveloper toolsSecurity & privacy

openbot

An open source platform that combines AI bots with the actor model, functioning as an alternative to Grok Bot. It offers a self-hosted version where users can run multiple bots that talk to each other.

Builders @regnull

AI & automationDeveloper tools

Second-Gen Multi-Device Harness

A second-generation multi-device harness built to the same quality bar as Sublime Text, with potential delivery as SaaS for security and reliability reasons; at minimum a personal tool for the author.

Builders @carterschonwald

Developer tools

Search Hub

A highly customizable search hub that lets users query multiple search engines and AIs from one place. It runs entirely in the browser as a single HTML file with no telemetry or dependencies, and can be saved and run locally.

Builders @adrianwaj

AI & automationProductivitySecurity & privacy

Vicena.ai

An AI system for running scientific experiments, capable of operating both through simulation and in real laboratories.

Builders @oersted

AI & automationScience & research

Ukulele and guitar rack

A DIY rack designed and built to hold five ukuleles and a guitar.

Builders @femto

Hardware & DIYLifestyle & hobbies

Essay 001: On What the Panopticon Cannot See

A written essay titled 'On What the Panopticon Cannot See', published as the author's September installment in an ongoing series of monthly published pieces on the author's research website.

Builders @metanoia_

Creative tools & media

Buildyard AI

A portfolio platform for AI work where users can showcase the AI projects they build, share their AI workflows and skills, and learn from what others have shared.

Builders @buildyard

AI & automationCommunity & civic

2D top-down mech game

This is a 2D top-down mech game the author is intensely developing, started with the help of agentic coding and now occupying most of their working time.

Builders @kharak

Games

Opinionated Identity Provider (next-gen Keycloak alternative)

An opinionated identity provider designed with security and performance as first-class priorities, positioned as a next-generation take on Keycloak. It aims to deliver a holistic product built in one go, rather than the incremental evolution that dilutes security, performance, and architecture in existing identity products.

Builders @sandeepkd

Security & privacy

Digital Carrot

Digital Carrot is a cross-platform screen time app and app blocker that blocks distractions until programmable goals are met, such as blocking social media until you walk 10,000 steps, blocking Factorio until you go to the gym, or blocking Netflix until all Todoist goals are finished. Goals are verified with real data from sources like the phone's GPS and fitness trackers and can be programmed with a simple expression editor. Current work is streamlining the plugin and goal system so people can more easily write and share goals with one another.

Builders @newswangerd

Health & fitnessProductivity

Tell Me a Penguin

Endless Mad Libs style fill-in-the-blank story generator where families can write stories about any topic they want. Includes a synced family library so stories are available regardless of which device or parent is using it, family invites, and a streamlined flow for installing the app on kids' devices.

Builders @kristjan

Creative tools & mediaGames

Goalpost

This is a team-based system for managing project requirements of any sort, focused on software and product managers. Projects are lightly structured documents that can show what changed in any particular update and can be searched or browsed as an up-to-date spec. Changes live in batches with optional customizable approval rules, email notifications to stakeholders when requirements change, and the ability to move changes between batches pre-approval.

Builders @djake

Productivity

proof of human

A podcast called "proof of human", started as an alternative to writing for sharing thoughts, for reasons similar to the parent commenter's move away from blogging.

Builders @saulpw

Creative tools & media

Sandlot

Sandlot is a Rust wrapper around SDL3 that enforces lifetimes and provides an idiomatic Rust interface, reducing opportunities for footguns compared to using SDL3 directly.

Builders @lyorig

Developer tools

andurel

Go web framework; version 2 brings Inertia v3 support, a sqlc-like model layer, and first-class OpenTelemetry support.

Builders @mbvisti

Developer tools

City council Flock camera accountability mapper

This web tool maps city councils and the Flock surveillance cameras in their districts, covering about 1,000 councils so far, and enables one-click petitions to remove or replace the accountable council member. It is being readied ahead of the November 3 midterm elections.

Builders @arionhardison

Community & civic

fec.dev

This website helps users find ballots for elections, mentioned as a resource for the upcoming November 3 midterm elections.

Builders @arionhardison

Community & civic

Make Art Not Apps

A website shared only via its URL, makeartnotapps.com; the comment provides no additional details about its purpose, features, or content.

Builders @hellojomp

Sanctum

A native iOS voice journal app, like Obsidian but for voice notes, with one-click recording, self-organization of notes and ideas, and a focus on data sovereignty and privacy. Transcription uses AssemblyAI, LLM inference runs in a TEE via redpill.ai, backups use end-to-end encryption with Backblaze storage, and the backend uses AWS Lambdas, DynamoDB for billing storage, and Supabase for auth.

Builders @mikodin

AI & automationProductivitySecurity & privacy

Scribe

An Obsidian plugin that the author built and has been maintaining for about two years; it is the precursor from which the Sanctum voice journal app grew.

Builders @mikodin

Productivity

Elo-based climbing ranking app

A free and open climbing app that uses an Elo-like rating system to rank climbers and determine route difficulty. Anyone can contribute by adding gyms, crags, and creating competition events.

Builders @gapeslape

Community & civicHealth & fitness

"Sleeping Children" — early AI translation test (Nimbus space sci-fi)

An early AI translation test of the Finnish space sci-fi series, temporarily published online as an HTML page while the stories are prepared for book-on-demand publication. The translated story shares the heroine of the authors' debut book, and every short story in the series follows the same main characters visiting another star and another world.

Builders @tniemi

Creative tools & media

LightWave starmaps port to Blender

This project ports the author's original LightWave starmaps of local space, generated from the Gliese/Hipparcos dataset about 20 years ago, over to Blender.

Builders @tniemi

Creative tools & media