Wordpress Plugins list for post meta

Excellent plugin for Meta Data

1. Advanced Custom Fields

   This is an excellent plugin to help you add custom metaboxes to save your metadata. The user interface is very polished and all metaboxes are created from right within the WordPress Admin.

2. Pods - Custom Content Types and Fields

   This is another excellent plugin, but is built with developers in mind. If you need to build something very advanced, and want to manage it from the WordPress dashboard, I recommend you dive into Pods. The developers are very responsive, and the documentation is excellent.

3. Types - Custom Fields and Custom Post Types Management

   Another advanced solution that will do a lot more than meta-data related fields.

4. Custom Metaboxes and Fields for WordPress

   This is a library that lets you manage your metabox configuration all in one place via a filter hook. Originally created by Jared Atchison and maintained by Bill Erickson and Andrew Norcross, It's development has been taken over by the crew at WebDevStudios* and is in active development. Definitely check out the wiki for in-depth examples.

5. Custom Metadata Manager for WordPress

   Another recommended library and is by the fine folks at Automattic, the people behind wordpress.com, so you know you're in good hands.

6. HM Custom Meta Boxes for WordPress

   Another "CMB" flavor, that was originally forked from Jared Atchison's Custom Metaboxes and Fields for WordPress. It's unique in that it has "a basic layout engine for fields, allowing you to align fields to a simple 12 column grid", among other things.

7. Fieldmanager

   Fieldmanager is a toolkit for developers to create complex administration screens in WordPress.

   Another advanced toolkit recommended by the folks at Automattic.