TeXstudio is a fully featured LaTeX editor. It is designed to make writing LaTeX documents as easy and comfortable as possible. It features an integrated PDF viewer with (almost) word-level synchronization, live inline preview, advanced syntax highlighting, and live checking of references, citations, LaTeX commands, spelling, and grammar.
Hados stores files in a cluster of servers. Its goal is to handle high availability by storing copies of the same file on several nodes. It provides RESTFUL APIs to easily store, check, or retrieve files. Using the cluster APIs, you can retrieve files from whichever node hosts them. To avoid any single point of failure, it is possible to apply a request to any node of the cluster; there is no master node.
MySQLi Query is a class that executes queries from parameter lists using MySQLi. It extends the MySQLi class with functions that can compose and execute SELECT, INSERT, UPDATE, DELETE, REPLACE, and HANDLER queries with parameter values that define tables, fields, field values, conditions, etc. The class destructor function disconnects from the MySQL server.