Hive Developer Portal
ChainSync - https://github.com/aaroncox/chainsync
A simple library to stream blocks and operations for digesting into other mediums.
Interactive Hive API - https://hive.hivesigner.com/
Interactive Hive API swagger, open-source script allows you to simply studying Hive API + Hivesigner API so you can start building decentralized apps in matter of hours.
HiveSQL - https://hivesql.io/
A private Microsoft SQL server database with Hive blockchain data, subscription based, allows you to do flexible queries and analyze blockchain data.
eSync - https://github.com/eSteemApp/esync
eSync extracts Steem blockchain data and saves into Mongodb, written in Nodejs.
SteemPress - https://github.com/drov0/steempress
SteemPress is a WordPress plugin to allow you to automatically publish your articles to the Steem blockchain whenever you publish them on your blog.
Many more projects and tools can be found at https://hiveprojects.io