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Although there are a lot of similar content on the Internet, because there are many tools are really useful so still put it here, you and I can effectively check the site, and they are free, in most cases you do not need to create an account can be used directly. (Note: This is the most clear classification of the highest quality SEO tools list, including a total of four parts: Keyword tools, link tools, available line tools and other tools, notes are not directly translated according to the original text, many tools can only be used in English station search engine optimization work.) The first part: Keyword tool keyword research tools: Appropriate in-depth keyword research, for your site for column division and standardize keyword deployment preparation.
1, Keyword tool-webmaster Toolkit
2, Keyword External tool-google Adwords
3, Keyword Selector tool-inventory Overture
4, Keyword suggestions Overture-seo Chat
5, Website Keyword Suggestions-webconfs
6, Keyword suggestion Tool-self SEO
Keyword density: a keyword, the number of words in the page and the proportion of text.
7, Keyword Density-seo Chat
8, Keyword density & proeminence-ranks
9, Keyword density Analyzer-keyword density
10, Analyze Keywords Density-google Rankings
11, Keyword density Checker-webconfs
12. Keyword Density Analyzer tools-seo Book
Competitor Analysis: The competitor who can analyze the target keyword, and analyze the keywords that the competitor used.
13, Competition Tool-seo Digger
14. Competition Analysis Tool-seoscorecard
15, top competitor Tool-webuildpages
Search engine keyword location tools: Use these tools to check your keywords currently located in major search engines such as Google, Yahoo, MSN.
16, Search Engine Keyword position-seo Chat
17. Keyword Analysis Tool-mcdar
18, Serps Position Checker-linkvendor
19, Website Position Tool-rnk1
Part Two: Link tool link breadth: Track the total number of backlinks, and return which sites link back to you and what the anchor text is.
20, Link Popularity-seo Chat
21, Link popularity Checker-webmaster Toolkit
22, Link popularity Check-widexl Internet Solution
23, Link popularity Check-market Leap
24, Link popularity-backlinks checker-search Bliss
25, backlink Analyzer-sitening
26. Check Backlinks-webuildpages
C-Level IP address check:: Link Partners for IP address distribution check, and not be the same type of IP address of the link to punish.
27, Class C Checker-webrank Info
28, Class C checker-webmaster Toolkit
29, Class C Checker-seo Chat
Spider Simulator: You can learn the difference between Web page appearance and search engine Spider Index.
30, Spider Simulator-seo Chat
31, Spider View-iwebtool
32, Search Engine Spider simulator-anownsite
33, SE Bot simulator-xml Sitemaps
34, SE Spider-linkvendor Part III: Usability Tools Browser resolution test: In different screen resolution, different operating systems, different browsers under the display of Web pages.
35, Browser screen denotes Checker-markhorrell
36, Screen Size Tester-anybrowser
37, screen denotes Checker-andylangton
HTML and CSS validation: There is no doubt that the verification of the consortium will give you a better ranking of search engine rankings, and quickly correct the wrong and nonstandard code.
38. The Validator of the Consortium
39. WDG HTML Validator-web Design Group
40, CSE HTML Validator Lite
41. Validation Services for your html/xhtml/wml-validome
42, CSS Validator-jigsaw
Firefox extensions: More reference to the Firefox SEO extensions I've written before.
43. The Validator of the Consortium
44. WDG HTML Validator-web Design Group
45, CSE HTML Validator Lite
Page Speed test: Small page, download speed of the Web page who is deeply loved by users.
46, Speed Tester-linkvendor
47, Website Speed test-web Hosting Top
48, Website Speed Test-iwebtool
49, Speed Test-website Goodies
50, Web Page Speed Part IV: Other SEO tools PageRank prediction: Including future forecasts and current PR value.
51, Future Pagerank-seo Chat
52, predict Pagerank-page Rank prediction
53, Future PageRank
54, *page Rank Prediction-dnlodge
55. Visual Pagerank-iwebtool
56, Search Pagerank-seo Chat
57, Page Rank Tool
Traffic ranking: The traffic trend of the site and search engine analysis.
58, Alexa Traffic
59, Awstats
60, **sitetracker
61, **histats
62, **google Analytics
63, Compete
Search engine saturation: The number of Web pages indexed by search engines.
64, Search Engine saturation-market Leap
65. Search Engine saturation tool-build reciprocal Links
66, Search Engine Saturation-searchbliss
67, Search Engine saturation tool-to the Web
68, Search Engine saturation Tool-seo Book