Collection of AWS Lambdas for creating and managing Delta tables

Java JsonPath implementation

a tool to analyze the results of your submits in codingame competitions

Performance Hikes for Apache Spark

An sbt plugin to automatically update the release notes file.

State of the Art Natural Language Processing

🦜🔗 Build context-aware reasoning applications

An open-source storage framework that enables building a Lakehouse architecture with compute engines including Spark, PrestoDB, Flink, Trino, and Hive and APIs

This simple multi-platform application allows to download media through WIFI from digital Olympus cameras.

Presentation Slides for Developers

My two cents (technical blog)

The official AWS SDK for Java 1.x (In Maintenance Mode, End-of-Life on 12/31/2025). The AWS SDK for Java 2.x is available here: https://github.com/aws/aws-sdk-java-v2/

Commandline tool for running SQL queries against JSON, CSV, Excel, Parquet, and more.

Generate Google Slides from markdown

Use Log4Shell vulnerability to vaccinate a victim server against Log4Shell

ESP8266 WiFi Connection manager with web captive portal

Some examples for Spark notebooks for COVID public data

Calculate sun and moon times in Java

An interactive cheatsheet tool for the command-line

Installation tools and workflows for deploying/building Rust fork esp-rs/rust with Xtensa and RISC-V support

Fast, secure, efficient backup program

Cloud-native search engine for observability. An open-source alternative to Datadog, Elasticsearch, Loki, and Tempo.

An application for controlling 2D plotters, cutters, engravers, and CNC machines.

An ASCII box drawing plugin for Vim

Inline previews for Plantuml sequence diagrams. OMG!

Espressif IoT Development Framework. Official development framework for Espressif SoCs.

Efficient and minimal collaborative code editor, self-hosted, no database required

Latest ESP8266 SDK based on FreeRTOS, esp-idf style.