Geotastic
An AI analyst for ArcGIS that uses LLMs to generate code for analyzing city data stored in ArcGIS or Socrata.
Projects from HN posts
What are folks working on?
1689 projects published
probl
A probabilistic programming language supporting constructs like `if 45% { x } else { y }`. It works by creating many weighted worlds that are merged when identical; operators like `observe` can remove possibilities, and a sampling mode runs many simulations to get an approximate result.
gloss
A terminal tool that renders markdown, sources, images, and chess and go (game) records, built for libghostty with fallback support for other terminals. Installable via Homebrew.
Tandem Reverse-Trike Halftrack
A tandem, reverse-trike halftrack built by combining the front end of an ATV with the back end of a snowmobile, replacing the snowmobile skis with wheels so it rides more like a motorcycle. It has extra length for a passenger and a cargo basket, is styled to look like it came out of Mad Max, and is intended for cruising around festivals while running an ad-hoc taxi service as a way of meeting people.
Spool
Open-source tool for running persistent Claude Code loops. It provides a web UI for creating and managing multiple agent loops without babysitting terminal sessions, lets you chat with the loops as they work via Telegram or Slack, and enables loops to communicate with each other. Each loop can run directly in your environment with access to everything you have, in its own container, or on Anthropic's cloud. The author also uses Spool to build Spool, experimenting with several loops collaborating on the same project.
Euclase
Desktop app that acts as a creative harness for generative AI, unifying various image and video generation backends (ComfyUI for local models, APIs for closed ones) into one cohesive interface, with optional integrated agents to pilot the whole workflow. Currently in beta, with onboarding and docs being refined before a wider release.
TisVlay
FOSS utility that brings TV display control to Linux, including power, volume, backlight, AV mute, and input switching, with per-device profile automation via desktop session integration (idle/lock, boot/suspend, remote login/streaming) and reverse control letting the TV lock, sleep, or wake the PC and its remote drive the desktop. Supports various vendor interface protocols for multi-display setups to mitigate energy usage, OLED panel burn-in, and projector bulb burn-out. Currently in beta but daily drivable and fully documented; ongoing work focuses on distro packaging and custom ATmega firmware in Rust for HDMI CEC USB adapters to work around TV firmware bugs.
RainbowSay
RainbowSay is a language-learning app that automatically pauses video (e.g. K-dramas on Netflix) when it detects a complete sentence and generates translation, per-word vocabulary breakdowns, and grammar explanations of the subtitles using AI. It also accepts voice input from the microphone for deliberate speaking practice of what was learned and supports spaced repetition.
Koaches.app
This app helps users prepare for and practice behavioral interviews.
Embarc
A service that crunches public filings in the financial sector, offering a large amount of data for browsing; it doesn't yet aim to solve specific user problems, though it includes a logged-in dashboard with analysis of RTOs.
Cuppa Markets
A suite of personalized day trading tools, originally built to help the author's wife with her day trading, now productized and available at cuppa.markets.
Small apps collection (radziszewski.software/apps)
A collection of small apps by the author, built as SaaS experiments; the apps page at radziszewski.software/apps lists them.
hn.fiodorov.es
AI-powered search engine that searches across all Hacker News comments, with MCP support for agentic access.
climate.fiodorov.es
Agentic AI analysis tool covering the climates of world cities with more than 300k inhabitants, with MCP support for agentic access.
Native macOS and Android surveillance camera apps
This project reverse engineers the streaming protocols of three brands of cheap surveillance video cameras to build native, faster replacement clients. Native apps for macOS and Android have been completed for one of the brands, with work continuing on the remaining two.
Wormlove
A browser-based puzzle game where players make worms kiss, featuring 32 levels playable in the browser.
Nitelore
A super fast anti-gravity racing game aimed at players who enjoyed F-Zero or Wipeout.
wearover
One of a chain of apps that hand off content to one another where possible, using on-device AI. Part of the author's startup experiment, which they may wind down after burning tokens and building more than serving end users well.
getalcor.com
One of a chain of apps that hand off content to one another where possible, using on-device AI. Part of the author's startup experiment, which they may wind down after burning tokens and building more than serving end users well.
GitSocial
A self-hosted git forge that keeps all repository activity in git itself, including issues, pull requests, comments, and releases, aiming to serve as a viable self-hosted alternative to GitHub, GitLab, and Codeberg.
docking.cc
A Linux dock bar that runs on Wayland and X11, with support for FreeBSD, OpenBSD, and NetBSD, and Windows support being experimented with. It ships with 60+ native applets such as WhatsApp, Hacker News, Reddit, Calendar, and Weather.
OIDC auth relay for self-hosted LLM engines
A thin OIDC authentication relay for self-hosted LLM engines. Users log in with their organization's identity provider, generate a personal API key, and point their harnesses at the relay instance. Implemented as a tight Erlang program with no web chat interface or pricing-gated features.
Buzzpot
A shared canvas for agents and projects that is being evolved into a multiplayer collaborative environment for teams.
Leaflo
A CBT (cognitive behavioral therapy) journal that is being developed into a library of CBT techniques and mini-courses.
Plainline
An AI presentation service focused on text and data rather than visuals.
Duolingo for sales
A gamified app for learning sales skills, styled as a "Duolingo for sales"; it has morphed into an eval benchmark for sales agents, with the focus on making the learning experience feel fun rather than a basic quiz workflow.
Arkel
Arkel is an object store (S3-style object storage service) that has been in development and testing for a few months, aimed at people who self-host and want reliable backup storage while decreasing reliance on big tech providers.
Zustri
This app provides booking and scheduling for therapists and salons. It includes an AI agent, a public booking page, and support for multiple staff, and is in final polish ahead of launch.
Asteria 4X
A 4X space strategy game inspired by the 1995 classic Stars!, cloning its core gameplay while adding the builder's own touches and lots of high sci-fi concepts. Already fun to play, with early access coming soon on Steam.
Lungy
This app provides interactive breathing exercises and is being developed toward a medical device version for people with asthma and COPD.