What paid SEO-services do you use?

I prefer to use the free services but only one time i used the Backlink analysis - like ahrefs services on my client demand. Now many free services are available in market that can fulfill your demands.

 

I use only free services which are quite beneficial

 

i m always use Keyword analysis as paid tool.

 

SEO is all about organic, so it can't include any paid services. You're talking like Rand Fishkin, who has included PPC and other paid media into so called inbound marketing, lol

Still, if I consider a few paid activities for SEO (as many of the blogger agrees that there can be paid services into SEO), so you haven't mentioned anything related to that.

You've just mentioned a few tracking tools

• Buy\Sell links - like text-link-ads - May attract penalty
• SERP position monitoring (for your websites) - No tool can give you exact results, so do it manually
• Website or server health\availability monitoring - like pingdom, monitorus etc. - If your website is hosted with a reputated hosting company, you don't need these tools, instead of spending on these tools, spend on hosting, don't type "Cheap Web Hosting Company, rather type, "Best Web Hosting Company" and check with user reviews on various review websites
• SERP position monitoring (competitors analysis) - like semrush - I use
• Keyword analysis - like wordtracker - Google Keywords analysis tool is best
• Backlink analysis - like ahrefs - Use open site explorer
• Any context advertising specified service - No
• Autoposters, autosubmitters etc. - avoid, may attract penalty
• Something else (please write comment and tell us what you use) - No

 

I majority use the SEO free tool but few times i spend money on the long tail keyword search.

 

Some tools or services can be used in SEO and they would be effective too..

For example: Google Adwords Keyword Tool, backlink checker etc..

You can get services which consumes lots of time, you can hire people for researching data for link building, guest posting etc.