Everything you need to know to get the job.

A libre lightweight streaming front-end for Android.

Telegram for Android source

Apache Pulsar - distributed pub-sub messaging system

Logstash - transport and process your logs, events, or other data

Style and Grammar Checker for 25+ Languages

Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.

Open-Source Subscription Billing & Payments Platform

An open source clone of Amazon's Dynamo.

Syncany is a cloud storage and filesharing application with a focus on security and abstraction of storage.

A collection of Design Patters implemented in Python

Open Sound Control messaging for the Semantic Web