PPC Search Engine Toolbox

Pay Per Click
ToolBox - everything related to Pay Per Click. Includes free software,
trials, and account freebies (free clicks).

• Free
  Google AdWords Tips (free)
• Pay
  Per Click Search Engine Tips (free)

PPC Search Engine Automatic Bid Management Software

• BidRank (free
  trial, starts @ $130)
• KeywordMax

PPC Search Engine Tracking Software & Log
File Analyzers

• ConversionRuler ($20/month, free trial)
• Clicktrax ($50/month, free 30 day trial)
• IndexTools
• Google Analytics – some people do not like to share their conversion data with their traffic sources, but their analytics are useful and free.

PPC Search Engine Keyword Suggestion Tools

• Google Keyword Tool – shows 12 month trending data. Can automate keyword suggestions based on URL or keywords you enter.
• SEO Book Keyword Research Tool
  - based on the Overture keyword suggestion tool, this tool enables you
  to cross reference that tool with many other useful keyword research
  tools.
• Digital
  Point – free (combines Overture + WordTracker)
• Overture
  Keyword Suggestion Tool – free
• Google
  AdWords Keyword Sandbox – suggests related terms without showing
  search volume – free
• Google
  Search Suggestion – suggests searches (or keywords) ordered
  by search frequency – free
• WordTracker – keyword generator (various prices)

Other Keyword Tools

View Bids

• Overture
  View Bid Tool – free

Expand / Formatting Your Keyword List

• keyword permutation genertor – free tool for making keyword lists
• misspelled keywords generator – helps you target misspelled terms
• Google dynamic keyword insertion – inserts search queries in your ad copy to make the ad bolded

PPC Fraud Detection / Prevention

• VeriClix – free
• Click
  Auditor – tool provided by KeywordMAX starting at $20 / month
• WhosClickingWho – tool created by John Carreras and Bruce Clay which starts out
  at about $30 / month or $300 / year.

Pay Per Click Competitive Analysis Software

Software tracks the average position and frequency of ad display
on Google AdWords by randomly pinging Google. Please note that I do
not believe either of these companies have a partnership with Google
and if Google detects their ping patterns Google may intentionally
offer bad data.

• Ad Archiver – cheap, but not feature rich.
• AdGooroo – more expensive, but shows the data in graphical format.