Amaury Balmer

WordPress 3.1 and up allow for reasonably simple custom taxonomy, this plugin makes it even simpler, removing the need for you to write any code.
Add support for taxonomy with or without hierarchical. Choose the selector type for write post.
Allow to add taxonomy to any objects registered on your installation. This plugin can be coupled with the plugin ACF to a new term meta database that allow to create on fly any field need for the taxonomy. For example, for a “Number” taxonomy, you can add fields : number ID, date of parution, screenshot, etc !
This plugin is developped on WordPress 3.5, with the constant WP_DEBUG to TRUE.
This plugin allows you to add taxonomy just by giving them a name and somes options in the backend. It then creates the taxonomy for you, takes care of the URL rewrites, provides a widget you can use to display a “taxonomy cloud” or a list of all the stuff in there, and it allows you to show the taxonomy contents at the end of posts and excerpts as well. 
To boot, it comes with a set of template tags for those who don’t mind adapting their own theme.
For full info go the <a href="https://github.com/herewithme/simple-taxonomy" rel="nofollow ugc">Simple Taxonomy</a> page.

Simple Taxonomy

WordPress 3.1 and up allow for reasonably simple custom taxonomy, this plugin makes it even simpler, removing the need for you to write any code.

faaiq

Best plugin for creating custom post type and fields. Very user friendly You will love it use it and see the magic.
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Simple Custom post type custom field creator.
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Creates New Content Type in Just Two clicks
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Loads custum post type data in template file using one function
$data = simple_cck::get_post_data($post_id)
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Support Basic Fields Like textfield, Textarea, Html Editor, Radio buttons, Checkboxes and Select
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Supports Some special fields like Date, Image and File,
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Supports Advanced fields like Post Refrence , User Reference and Taxonomy.
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Supports Advanced fields like Post Refrence and User Reference.
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Set Meta title, Meta Description and meta keyowrds fields for custom content type.
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Manage defaults fields for custom post type like (title ,editor, author, thumbnail, excerpt, comments,revisions)
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Multiple content types can be arranged under a single parent menu at admin section.
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jQuery Calender for date fields
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Set Different thumbnail size of each image.
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Alt tag fields for image.
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Create multiple mataboxes of grouping fields.
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Arrage metabox by drag n drop.
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Arrage fields within metabox by drag & drop
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Drag n drop interface to arrange content type in Admin menu.
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Simple Custom post type custom field

Best plugin for creating custom post type and fields. Very user friendly You will love it use it and see the magic.

Simple Taxonomy vs Simple Custom post type custom field