Loki

Paypal target meter uses the Paypal NVP API (which means you must have a premium or better account) to display a progress meter of donations towards a monthly or yearly goal. Setup is a breeze, requiring only your Paypal API credentials, and it supports filtering received payments by the email address they were sent to.
You can see a demo of the plugin on the BrainSilo web page at http://brainsilo.org/

Paypal Target Meter

display a progress meter of donations towards a monthly or yearly goal

partouf

This plugin enables you to place a widget on your sidebar to show your current goal and pledge amount on Patreon.
You can select from a fixed set of colors and styles to best fit your wordpress theme, with or without the active goal’s description.
The plugin does not require a special API key for your Patreon account, it only uses the public part of the Patreon API.
Note: the plugin adds a delay of 1 minute (max) until new pledges will be added up to your progressbar.

GoalieTron

A pledge goal widget for creators that have a Patreon page.

Paypal Target Meter vs GoalieTron