Efficient PPC offers some keyword grouping  and keyword generation functionality and has some great features.
WordStream allows you to strategically segment your keywords, and lets you create a dynamic database managed by rules you create. The tool also goes beyond keyword grouping to provide you with:
- Group keywords Instantly with an effectiveness you couldn't otherwise hope to achieve.
- Dynamically analyze and manage keywords and queries in real time based on traffic and conversions.
- Maintain large-scale paid search accounts with powerful keyword organization and negative keyword discovery tools.
- Get the most out of your efforts with workflow tools that will tell you everything from which Ad Group needs attention to which piece of organic content is likely to earn you the most money.
- Improve productivity, relevance, and value by increasing your Quality Scores, saving time spent on manual tasks, discovering valuable keywords, and streamlining your PPC and SEO efforts.
If the above sounds like something that your business or your clients might be interested in, you can:
Or, feel free to contact us  for more information about WordStream.