QuestDB is a high performance, open-source, time-series database

Apache Doris is an easy-to-use, high performance and unified analytics database.

The world's fastest open query engine for sub-second analytics both on and off the data lakehouse. With the flexibility to support nearly any scenario, StarRocks provides best-in-class performance …

AutoMQ is a diskless Kafka® on S3. 10x Cost-Effective. No Cross-AZ Traffic Cost. Autoscale in seconds. Single-digit ms latency. Multi-AZ Availability.

Efficient reliable UDP unicast, UDP multicast, and IPC message transport

Java library to create bots using Telegram Bots API

XChange is a Java library providing a streamlined API for interacting with 60+ Bitcoin and Altcoin exchanges providing a consistent interface for trading and accessing market data.

[Unmaintained] Open source two-factor authentication for Android

Simple Binary Encoding (SBE) - High Performance Message Codec

Android backup extractor

The most beautiful SMS messenger for Android - Revived

Desktop Bitcoin Wallet focused on security and privacy. Free and open source.

A simple to use library to create Telegram Bots in Java

Pure Java implementation of EdDSA

Not HDF5

ClickHouse Kafka Connector

IEX Cloud open source API wrapper

Golub, Glattfelder and Olsen, ''The Alpha Engine: Designing an Automated Trading Algorithm''

Fast Nasdaq transport protocol library for the JVM

jq, an implementation of q on the JVM

Poisson intensity of limit order execution, calibration of parameters A and k using level 1 tick data

Kafka Connect SMTs