Code

Projects I have built and published on GitHub — tools, experiments, retro computing and more. Filter by category or search; open one for what it does and where to find it.

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HiTorro framework

A modular Java framework for typed JSON (JVS), NLP, full-text search, retrieval and stream processing.

Hitorro All HiTorro is a modular Java 21 framework for building type-aware JSON processing systems with NLP capabilities, full-text search, and multi-language document processing. It integrates with Spring Boot 3.2 via optional auto-configuration and can be operated standalone. Key technologies include Maven multi-module architecture, JSON serialization/des... HTML
Hitorro Analysis This is a Java-based project that provides comprehensive tools for natural language processing, text analysis, and related functionalities. It includes modules for sentence detection, tokenization, part-of-speech tagging, named entity recognition, parsing, document categorization, and sentiment analysis. The project utilizes various technologies... Java★ 1
Hitorro Base This Java-based project, hitorro-base, is a foundational component of the Hitorro framework, providing a base for building and deploying applications. It utilizes Maven as its build tool and incorporates various dependencies, including Tapestry, to create a robust and scalable platform. The project's purpose is to facilitate efficient developmen... Java★ 1
Hitorro Basedms The Hitorro Base DMS is a standalone Document Management System with database persistence, content management, and workflow capabilities, built using Java 19 or higher and Maven 3.6+. It provides features such as document version control, metadata management, content storage, user authentication and permissions, and job scheduling, utilizing key... Java★ 1
Hitorro Basefile HiTorro's pluggable filesystem abstraction — BaseFile hands you one API across local disk, S3, HDFS, FTP, and jar-embedded resources. Ships fs impls, directory crawlers, filters, transacting-directory tools, block-file queue reader/writer, CSV read/write, image manipulation, URL parsing, and streaming sinks. Java
Hitorro Baseui This project is a web UI framework built on Apache Tapestry 5.4.x, providing reusable components for data visualization, natural language processing interfaces, and RDF/SPARQL integration. It utilizes key technologies such as Apache Tapestry, Java 19, Apache Jena, and Apache OpenNLP to create a comprehensive platform for building web application... JavaScript
Hitorro Conversation The Hitorro Conversation project provides a Java-based module for analyzing relationships between forum posts, comments, and discussions to identify conversation threads, track participation, and generate RSS feeds of related content. It utilizes link analysis algorithms and graph storage techniques to efficiently analyze large amounts of data. ... Java
Hitorro Core The hitorro-core repository is a foundation module for the HiTorro framework, providing a wide range of utilities including JSON path navigation, file system abstraction, caching, HTML parsing, and 780+ utility classes. Built in Java 21, it can be used standalone with zero dependencies on other HiTorro modules. Key technologies include Java and ... Java
Hitorro Dataaquisition The hitorro-dataaquisition project is a comprehensive data acquisition module that enables automated collection and processing of external data streams from various social media platforms and data sources, including Twitter, Facebook, LinkedIn, Wikipedia, Yahoo, and more. It provides connectors and importers for multiple data sources, as well as... Java
Hitorro Dedupe This project, hitorro-dedupe, provides efficient data deduplication capabilities including Bloom filters and hash-based deduplication algorithms. It utilizes key technologies such as Java and provides a standalone Maven JAR project structure. The project's purpose is to offer flexible storage and retrieval of deduplicated content using various t... Java
Hitorro Example Springboot This project demonstrates the integration of the Hitorro framework with Spring Boot, showcasing a comprehensive example application with features such as document management, filesystem crawler, JSON type system, command framework, REST API, service framework, and structured logging. The React UI provides an interactive interface for testing all... Java
Hitorro Features This project, hitorro-features, is a Java-based feature extraction and indexing engine designed for machine learning pipelines and search ranking applications. It provides a file-based system for extracting features from documents, storing them in efficient binary index files, and retrieving them for scoring and ranking purposes. Key technologie... Java★ 1
Hitorro Fleet Mail Analytics Mac Mail analytics: hitorro stream pipeline enriches your mail (segmentation + NER + KV/Lucene index); interactive React UI lets you slice by sender/domain/topic/thread, run saved queries with alerts, summarize threads with an LLM, and surface enrichment ideas. Java
Hitorro Fleet Retrieval hitorro-fleet-retrieval — Spring Boot service hosting the full hitorro retrieval coordination runtime. First member of hitorro-fleet (Spring Boot runtimes for Orion mesh / K8s). Java
Hitorro Gittools A Java 21 library for programmatic Git repository management, GitHub API integration, and automated pull request creation. Part of the HiTorro framework (com.hitorro, v3.0.0). Java
Hitorro Index This project integrates Apache Lucene with the Hitorro JSON Type System (JVS), providing a full-text search solution for JSON documents. It supports various search features, including fielded search, faceting, multi-language tokenization, and streaming NDJson results. The primary language used is Java, utilizing Lucene's facet module to create a... Java
Hitorro Jsonsql Hitorro JSON SQL is a Java-based, type-safe SQL query engine that enables the execution of SQL-like queries on in-memory JSON documents without requiring a traditional database. The project combines SQL syntax with JSON data structures, providing strong expression evaluation and support for various operations such as aggregations, mathematical c... Java★ 1
Hitorro Jsonts Mongo This project is a Java-based JSON type system (JVS) integration for MongoDB, providing reactive MongoDB operations with automatic BSON mapping and query support. It utilizes the Project Reactor framework and MongoDB Reactive Streams to offer seamless data exchange between JVS and MongoDB. Key technologies include MongoDB, Project Reactor, Java, ... Java
Hitorro Jsontypesystem This project, hitorro-jsontypesystem, is a metadata-driven JSON type system that provides structure, multi-lingual text, NLP enrichment, and projection-based transformations to JSON documents. It uses a configuration-driven approach with JSON files to define the types of documents, allowing for extensibility at runtime without recompilation. The... Java
Hitorro JVS Example Springboot This project is a comprehensive Spring Boot application that demonstrates the HiTorro JVS type system library, showcasing its capabilities in integrated Lucene search, RocksDB document storage, multi-language NLP enrichment, and AI-powered translation. The application serves as both a reference implementation and an interactive playground for ex... HTML
Hitorro Jvssql Streaming SQL engine over iterators of JVS (JSON-with-schema) documents. Apache Calcite handles parse/validate/optimize; a custom Iterator<JVS> executor integrates the JVS type system, watermark-aware sources with late-record handling, and emits JsonNode records as either an AbstractIterator or into a Sink. Java
Hitorro Kvstore This is a Java-based RocksDB key-value store module, providing high-performance access patterns, WAL-based replication, and flexible configuration options. It aims to simplify the use of RocksDB for developers, offering type-safe serialization and result pattern support. Key technologies include RocksDB, Java 21+, and Maven. Java
Hitorro Logdigest This Java-based project, hitorro-logdigest, provides comprehensive capabilities for processing, analyzing, and generating summaries of web server access logs. It offers a range of features including line parsing, request classification, user agent detection, media type classification, error detection, time-based aggregation, request type countin... Java
Hitorro Luceneviewer This project provides a Java utility library for inspecting and analyzing Lucene indices, offering features such as index statistics, field metadata, stored document retrieval, term enumeration, full-text search, and document-level term analysis, all with cursor-based pagination for safe use on large indexes. Key technologies include Lucene (ver... Java
Hitorro Maven This project provides a Maven repository for hosting Hitorro project artifacts, allowing users to easily reference and deploy the artifacts without cloning the repository. The repository is structured according to the standard Maven layout, with separate directories for different modules, and can be deployed using a simple `mvn` command. Key tec...
Hitorro Nosqldms Distributed document management system on JVS types, KV storage, and Lucene — versioned docs, copy-on-write renditions, many-to-many folders, REST + React UI, Spring Boot runtime with a framework-neutral core Java
Hitorro Objretrieval This project is a Solr-based object retrieval and search framework, providing a high-level abstraction for complex search operations with features such as persistent object storage, document clustering, and modular retrieval pipelines. It utilizes Apache Solr 9.4.1 and integrates with other technologies like JetBrains Xodus and Carrot2. The proj... Java★ 1
Hitorro Retrieval Hitorro Retrieval is a Java-based retrieval pipeline for chaining search, document fetch, enrichment, pagination, faceting, and AI summarization across pluggable search backends and distributed nodes. Its primary purpose is to replace the old Hitorro-ObjRetrieval module with Lucene/RocksDB, adding features such as multi-provider merging, stream-... Java
Hitorro Search Ui Extensible search UI for hitorro: React library + reference SPA + Spring Boot BFF proxying hitorro-fleet-retrieval. End-user and analyst modes; JVS-type-aware auto-renderer with per-type overrides; Docker / K8s / Orion deploy targets. TypeScript
Hitorro Spring Boot This project provides a set of Spring Boot starters to integrate the Hitorro framework into Java applications. It enables features such as service auto-configuration, property integration, and REST endpoint exposure for Hitorro commands. The starter uses various key technologies like Spring lifecycle management, property injection, and transacti... Java
Hitorro Streams HiTorro iterator/sink/mapper/reducer pipeline framework — chainable AbstractIterator sources with filter/map/take/reduce plus retry/rate-limit/parallel decorators, pluggable Sink endpoints (counting, filtering, async via ThreadedQueue), MapChain declarative pipelines, RestartableService/ThreadTimer/JobFarm, and Lucene-derived compressed streams. Java
Hitorro Streams Kafka Kafka source (Iterator<JVS>) and sink (Sink<JsonNode>) for the hitorro-streams pipeline framework and hitorro-jvssql. Wraps standard kafka-clients so only modules that need Kafka pay the client cost. Java
Hitorro Streams Nats NATS JetStream source (Iterator<JVS>) and sink (Sink<JsonNode>) for the hitorro-streams pipeline framework and hitorro-jvssql. Uses jnats pull subscriptions with durable consumers so restarts resume from the last acked message. Java
Hitorro Test This project contains comprehensive unit tests for the Hitorro project, covering various features and subsystems. It utilizes Java as its primary language and includes test classes for analysis, features, text processing, persistence, utilities, JSON type system, network communication, and core functionalities. The test coverage spans multiple m... Java
Hitorro Text Core The Hitorro Text Core project is a standalone Java library that provides comprehensive text processing, natural language processing, and document analysis capabilities. It offers features such as text analysis, NLP, document processing, language processing, and semantic analysis, using technologies like Lucene-based indexing, tokenization, and s... Java★ 1
Hitorro Text Persistence The Hitorro Text Persistence project provides text processing and indexing capabilities with database persistence integration, utilizing Java and the Lucene/Solr search engine for full-text search, phrase analysis, term matching, and document similarity calculations. It also integrates language models and web page content extraction for further ... Java
Hitorro Unittime The hitorro-unittime project is a Java micro-benchmarking and performance profiling toolkit that measures the execution time of various operations with nanosecond precision, including primitive Java operations, data structure operations, and custom code blocks. Its purpose is to provide accurate measurements expressed in milliseconds, nanosecond... Java★ 1
Hitorro Util The hitorro-util library is a standalone Java utility library providing core functionality for the Hitorro system, including JSON type system utilities, file system utilities, network utilities, data processing utilities, and more. It serves as an extracted component from the main Hitorro project and can be used in other Maven projects with the ... Java★ 1

HiTorro Mesh

A distributed SQL and pipeline engine over JVS data, with a driver, agents, transports and deployment targets.

Retro computing

Amiga, AmigaOS 4, 3DO and Atari ST: drivers, ports, emulator tooling, FPGA cores and homebrew.

AI, ML and NLP

LLM agents, Claude Code tooling, AI code review, speech, sentiment and machine-learning experiments.

Developer tools

Tools that make building, browsing and running code easier, from IDE plugins to site generators and CLIs.

Infrastructure and services

Self-hosted backend building blocks: key-value stores, DNS, secrets, messaging, webhooks and Kubernetes setups.

Data and search

Search interfaces, lakehouses, data pipelines, crawlers and analytics tooling.

Home automation

Home Assistant clients and integrations, solar monitoring and IoT device libraries.

Hardware and electronics

FPGAs, microcontrollers, sensors, cameras and other physical computing projects.

Games and graphics

Games, 3D viewers and graphics demos.

Apps

Desktop, mobile and web apps for everyday tasks: photos, health, finance, documents and collaboration.

Learning and experiments

Writing, examples, demos and test repos for exploring a technology.