Hortonworks Sandbox is a single node preconfigured VM/container that runs on a desktop or laptop to try out HDP. Try looking in https://docs.hortonworks.com/ and https://community.hortonworks.com/ before posting questions here.

python-cryptography is a python library for secure cryptographic services. The module includes both high level recipes and low level interfaces to common cryptographic algorithms such as symmetric ciphers, message digests, and key derivation functions.

Sortable is a minimalist JavaScript library for reorderable drag-and-drop lists

Questions related to upgrading AngularJS (v1.x) application to Angular (v2+). This tag should be used for questions related to preparing AngularJS application for upgrade, running a hybrid AngularJS/Angular application, and transitioning out of hybrid mode.

NATS is a simple, high performance open source messaging system for cloud native applications, IoT messaging, and microservices architectures. With clients written in Python, Ruby, Node.js, Elixir, Java, NGINX, C, and C#, and more.

DataStax Enterprise is big data platform consisting of open source tools such as Apache Cassandra, Solr, Spark, Tinkerpop and more.

Hive Metastore refers to the central repository of Apache Hive (the open source of data warehouse system built on top of Hadoop) metadata, which stores metadata for Hive databases, tables, partitions, user groups, roles grants, statistics in a relational database. Use this tag for questions related to the Apache Hive central repository.

The App Designer, introduced in R2016a, is a graphical tool for creating MATLAB apps with an interactive GUI. Use this tag only for specific MATLAB App Designer questions, and not for questions involving MATLAB GUIDE.

Anytime you've some question/problem using AWS SDK for .NET . It's the official package to work with AWS services using .NET