Brain surgery for WEB-sites (System info, DB access and SSH over HTTP).
KC Tools are a WordPress plugin with several tools for "in deep" development and troubleshooting. It allows reading of environment info, direct database access and terminal-like interface with server. It is locked by password to your browser only, so you can use it on life sites securely. It do nothing else - no output on pages, no shortcodes, no widgets, nothing, only a new row in "Settings" in Admin area.
Sometimes, when develop something new or try to find problem somewhere, needs to read "raw" info. Thus, this plugin is the right tool. But it is too powerfull tool, so it is not for everyone.
Blogers, self-webmasters, average users: This is not right tools for you. Contact me, I can create anything what you will need, but leave this plugin away. It can (and will) destroy your site within seconds. No joke...
Developers: Generally not for you too, but if you are brave enough, and want to learn - you are welcome. Sorry to repeat, but it is dangerous, because it is so powerfull. Imagine your plugin is a car - shiny and power (80 kW, 110 hp). So WordPress itself is a truck (450 kW, 600 hp). This plugin is not a truck. It is not locomotive (1,500 kW, 2000 hp) too. Nor haul truck (2,610 kW, 3,500 hp). It is a ship (81 MW, 109,000 hp), but it is not rocket. Be warned...
Gurus: It countain 3 tools. First allows to see environment variables and PHP init settings. Second allows direct communication with database, think about "mysql" command line tool. It is very light phpMyAdmin. Third is terminal-like tool, allowing command row, almost like SSH, but restricted to HTTPD user rights and no way to run continuous tasks like "top". There exists a commercial WP version and non-WP versions too, with more functions.
Feel free to review all my other plugins.