Alexa

Compete

Statbrain

Quantcast

Google 网站趋势

2.页面读取(载入)时间

Pingdom 

Webslug

WebWait 

Internet Supervision

Link Vendor

3.网站虚拟主机

Who.Is

Who Is Hosting This

4.Feed订阅用户

FeedCompare

5.网站历史

WayBackMachine

6.界面设计

Browsershots

Cross Browser Testing

7.搜索引擎优化(SEO) | PR值，反向链接，索引页及其它

Xinu Returns 

Websitegrader
这个免费分析工具曾经在彬Go的《20个免费的SEO网站分析工具》一文中介绍过。

SEO Meter

Popuri.US

8.网站价值

dnScoop

Cutestat

WebsiteOutlook

YourWebsiteValue

Site Value Calculator

9.综合信息

Quarkbase

Domain Tools

点击这里查看英文原文及详细介绍

　　下面要介绍的这20个工具，有些能对你提交的网站进行详尽的分析并作出详细的分析报告，甚至提示如何解决网站存在的一些问题，以达到优化效果； 有些工具只是提供一个大体的分析。我相信其中大部分都会对你的SEO工作有所帮助，而且会是你的网站维护起来更有意思 :-D 

您还可以参考以下网站优化相关文章:
《通过27个网站分析工具了解网站的9个有趣真相》 
《浅谈网站用户体验UX与SEO的关系》
《推荐两个SEO辅助搜索工具》
《Google 评价 blog 的指标》 
《Google 网页排名背后的技术》 

1.Website Grader

　　Website Grader是我平常比较喜欢使用SEO分析工具，因为它分析得很全面，可用性也很高。通 过Website Grader你将得到一个关于你提交的网站的非常详尽的分析报告，报告涉及到了网站的各个部分，比如页面结构、域名信息、标题摘要信息（h1,h2,h3 这些）、Google索引数量和bot最后爬行日期、RSS是否正确、Google/Yahoo/Alexa/MSN上的反向链接数、 Technorati排名、del.icio.us的收藏数、Alexa的排名情况和Google PageRank值。并且还会对提交的网站进行打分及网站出现的问题的修改建议。通常Website Grader所提出来的修改建议是很有价值的，而且能详细的致命问题出在哪，如何才能解决这样的问题。

2.Trifecta

　　Trifecta是这20个SEO工具中比较独特的一个，它以不同的标准分析一个网页、一个博客甚至一个顶级域名下的整个网站，他最终会为你提交的网站总结大致的分数及报告。如果不是会员的话每天可以申请一份分析报告。

3.Spider Simulator

　　这个分析工具会对你提交的网站进行相对于搜索引擎友好度的分析，并对提交的网站进行评分。主要的评分标准是Meta标签的使用、网页的标题、图片和Alt属性、网站响应时间和链接。

4.Web Page Analyzer(来自WebsiteOptimization.com)

　　这个SEO免费工具会对你的SEO工 作提供足够的分析信息。它将对提分析网站载入时间、包含的对象（Objects）、对象的大小等等，其中最有帮助的地方是“Analysis and Recommendations” （分析和建议）部分，它将为网站列出11个方面的评测及打分，其中红色为警告、黄色为提醒、绿色为很好。

5.SEO Analysis Tool

　　SEO Analysis Tool这个SEO工具也能提供一个非常详尽的分析报告，它主要对网页的Meta标签、关键词和链接文本进行分析。这个工具对于网站的SEO工作可以说是非常好的资源。

6.The Escape’s Web Page Analyzer

　　这个工具帮助你了解提交的网站的标题结构(h1~h6)、链接、关键词的使用和内容的问题。它并不像其它的工具那样为你提交的网站提供详细的分析报告，但是它提供的信息的帮助性和针对性要比其他SEO分析工具更好。

7.Seed Keywords

　　Seed keywords 提供一个 “plain English SEO review”来分析页面某些方面并给予建议，并提供关于这些元素为什么会影响页面SEO的基本说明。

8.Web Page Analyzer（来自FreeWebSubmission.com）

　　这个SEO工具可以全面的分析您提交的网站，如同其它工具一样，可以提供详细的分析报告。比如分析Meta标签并给予一定的指导性建议。这个工具在分析的时候也很看重网页的大小、读取时间以及在页面内容中关键词相关的链接、含关键词的Alt属性和关键词密度。

9.Spider Test (来自We Build Pages)

　　Spider Test 分析工具会快速简单的告诉你提交的网页是如何展现给搜索引擎的，它会显示出网页的描述、关键词、网页大小和网页中的文本等等…

10.Web Page Analyzer （来自 Webmaster Toolkit）

　　Web Page AnalyzerSEO分析工具可以让你为搜索引擎提供一个URL和指定的短语，然后它会反馈给你一些关于如何为这个短语而优化网页的建议。

11.Link Appeal （来自 Webmaster Toolkit）

　　你想知道一个网页（你的网站的或其它网站）是否有被其他网站链接的价值吗？输入URL，然后Link Appeal会基于一些评判因素给你提交的网页一个类似PageRank的分数和相关的外链数量。

12.Full Page Test （来自Pingdom Tools）

　　这个来自Pingdom网站的SEO免费工具可以分析网页的很多方面，包括读取时间,对象,CSS,RSS,转向链接等等…

13.SearchEngine-Analysis.com

　　输入一个URL和一个针对性的关键词或搜索短语，然后你会得到关于如何优化这个短语以在其它竞争者中领先。

14.Web Page Speed Test （来自Self SEO）

　　这个分析工具可以对你提交的网站列表进行对比，一次可以最多提交10个URL。

15.Similar Page Checker

　　帮助你检测输入的两个网址的内容的相似度，以避免由于内容重复而被搜索引擎处罚。如果它们非常相似，你可以进行适当的修改。转载文章的话，这个工具还是比较实用的。

16.Dead-Links.com

　　这个工具可以爬行你提交的整个网站，以寻找返回404错误页面的链接。检测的时间比较长。

17.Firebug

　　Firebug是Firefox的插件，它可以让你在浏览器中分析和调试自己网页中的HTML、CSS和JavaScript。

18.YSlow for Firebug

　　另一个Firefox插件，它可以分析并为你提供提高网页加载速度的建议。这个工具集成了上面说的FireBug工具。

19.Google Webmaster Tools

　　这个工具太有名了，我就不做太多介绍了。

20.Web CEO

　　Web CEO是一套非常优质的SEO优化和分析工具，分为收费版和免费版。免费版可以帮助你根据它的建议去优化你的网站，比如关键词建议，网页优化建议，和检查网站的评分等…

英文原文:20 Free Page Analysis Tools
翻译原文:20个免费的SEO网站分析工具(暴风彬彬)

However, there is something we need to know before we start any real SEO work – the direction of our entire SEO campaign – What we are trying to achieve? What are our targeted keywords? Who are our competitors? That led us to the most important preparation work before any SEO campaign get started – keyword research.

Keyword research is crucial as it acts like a compass for your website or blog. A proper keyword research reveals the supply and demand trends in your industries thus giving general idea on which keyword you should focus on.

In brief, here is how you can do a keyword research:

• Get a list of related keywords using Google Keyword Tool
• Search each keyword to check how many websites turned out on the search engine result page (SERP) – this fits in as the number of supplies.
• Websites topping the SERP are your major competitors, study them well.
• To learn what are the demands, check number of searches for each keyword using keyword tools.
• Tool suggestion for keyword research: Word Tracker and Keyword Discovery – these two are my favourites.

Well, now you have a rough idea on your competition. The smart approach is to be a big fish in a small/average pond – for starters, you should focus your work on keywords with moderate demands and low competition.

Besides supply and demand, keyword research also offers valuable information for your web designs. Take example that you are selling shoes online, I am sure you’ll have questions like: What are the popular brands searched online? How shoes should be categorized – based on brand, occasion, or sizes?

All these can be answered as you run down the keyword research work. You’ll see searches come in based on brands, like ‘DC shoes’, ‘jordan shoes’, ‘nike shoes’; in the same time, searchers are also looking for shoes for different activities or occasions, like ‘ballet shoes’, ‘safety shoes’, ‘bowling shoes’, ‘prom shoes’, and so on.

By the end of your research work, you should be able to generate a list of target keywords. And now it’s the time to focus your SEO work on them. To get started, here are the 10 key elements that will improve your blog or website’s SEO quality immediately. 10 key elements that improve your website SEO quality immediately:

1. Index-able and Keyword-rich URL

The power of a keyword rich URL is often overlooked by bloggers and webmasters. In case you have yet to registered your domain name, try include your primary keywords in your domain; while for those who are already running a website, a keyword rich URL (example: abc.com/keyword) still helps a lot. One might complains that domain name with keywords faces branding problems and hard to be remembered; but that’s the dilemma every webmaster/blogger has to face.

Also, a good SEO practice is to avoid complicated dynamic URL that is hard to be indexed. Try limit your URL to 2 – 3 variables, excessive usage of ?, $, &, +, % characters as well as cgi-bin redirect will only do you harm.

2. A reliable web hosting

Website with poor uptime will never rank high on search engines. Let’s imagine that you are the search engine, how would ranking a down website on top of your search result page looks like? Awfully bad, don’t you think? Hence, hosting your website on a reliable web hosts – dedicated or shared, is very crucial.

To pick up the right web host, you can always hang around reputable hosting forums like WebHostingTalk.com or you can read my personal hosting reviews here.

3. Keyword-rich title and heading tags

A keyword-rich page title is as crucial as a keyword-rich URL for a few reasons.

One, a keyword-rich title tells the search engine bots what the page is about thus grouping your webpage into the right category; second, most search engines will bold your keywords in title whenever that particular keyword is searched. Common sense, the bolding effect will definitely draw extra attention from the searchers and thus, brings more clicks into your website/blog.

Heading tags (example <h1></h1>) is hard to be missed in old times. Not now anymore. As more and more websites are built solely on blogging software like Typepad and WordPress, heading tags are often put in the wrong use.

Take Wordpress (WP) templates for example, WP themes designers often use heading tags for sidebar titles without relevant keywords (example: Achieve, Categories) which bring no SEO value at all. To make sure your blog is well SEO-ed, one top thing to do is to remove or modify these headings into keyword-rich headings.

4. Alt tag on images

In term of SEO, putting descriptive alt attributes with your image places additional relevant text to your source code. Search engines like this and the more relevant text you have the better chances you get to rank higher.

As an additional benefit, a descriptive image alt tag helps users to understand your image when it fails to load.

5. Proper structured internal linking

Search engines pay a lot of attention to links – both internal and external. As internal links are those that can be controlled by you, make sure your website internal linking is proper structured and filled with relevant descriptive keywords. A plain anchor text like ‘click here’ and ‘read more’ are not clever; ‘click here for more Jordan shoes’ and ‘read more about ballet shoes’ are.

For website owners, make sure there are plenty enough of internal links pointing to your primary pages; for bloggers, mentioned and linked to your previous blogpost whenever it’s appropriate, this give extra link juice to your previous blogpost (hence better rankings) plus it enables your readers to catch up what they missed.

6. Inbound links

Link development is an inevitable process if you want your website to rank high. The keypoint, however, is not to obtain links blindly from spammy websites and directories. Always emphasize quality on top of quantity when you’re building links.

There are wide options for your link building campaign: from submitting your sites to reputable directories to asking for a link exchange; from buying text link ads to writing guest blog post in your industries – some of these methods can be risky (of search engine’s filter and bans) and some are not. What you need to do is to pick a series of method you feel comfortable with and pour some sweat in the link building campaign.

7. XML sitemap

XML sitemaps is used for search engine bots indexing. It runs as a list of all pages and posts along with related information like priority of each page and the date of creation. These elements help search engine bots to crawl your websites/blogs as well as learning the importance level of each page.

While XML sitemap is not a must for a website to rank high, it is however good practice for web and blog owners to have it on site.

8. WWW/non-WWW Canonical Issue

Originally, all websites built can be viewed in two versions: the WWW and the non-WWW version. In normal cases, the search engines should be able to recognize the issue and rank the websites accordingly but occasionally it fails. This led to serious problem where websites are penalized (especially on Google) due to content duplication. Even if there’s no penalty imposed, the web page indexed twice will have hard time to rank high as the back links are (PR/anchor text) shared over two web pages.

The solution of this problem is simple. One, you can login to Google Webmaster Tools and tell them which version (WWW or non-WWW) of the website is preferred. Alternatively, a simple 301 redirect code in your .htaccess file is sufficient to solve the problem.

Example code:

To have your website in WWW version

RewriteEngine On
RewriteCond %{HTTP_HOST} !^www".example".com $
RewriteRule (.*) http://www.example.com/$1 [R=301,L]

To have your website in non-WWW version

RewriteEngine On
RewriteCond %{HTTP_HOST} !^ example".com$
RewriteRule (.*) http:// example.com/$1 [R=301,L]

9. Robots.txt

Robots.txt simply tells search engine bots what to crawl and what not to. It might not help that much in website rankings but it prevents irrelevant objects to be related to your website – which is good for your website to look focus (in search engine eyes) and professional.

10. Content is king

Users do not search for fun, they search for information and solution to a problem. If your website or blog does not offer what the users want, they will move away. As what had been widely covered by Nathan’s post about increasing and maitaining blog traffics, you should know attracting traffics via SEO is just the beginning; the key point of having a successful website is always having an informative website that solves human’s needs.

开启简洁链接(Clean URLs)
开启 Path 模块 (从 Drupal 4.3 开始进入 Drupal 核心模块)
Path 模块可以让您通过添加路径别名(path alias)，来达到自定义链接名的效果。例如 http://www.mypetal.com/node/7 可以定义为 http://www.mypetal.com/library/drupal-seo 。

开启 Pathauto 模块 （http://drupal.org/project/pathauto）
Pathauto 模块能够为不同类型的页面（nodes, categories, users）自动生成路经别名(path alias)，而不在需要用户手动定义路径别名。

设置 Pathauto 模块，在修改 node 的标题时，禁止 Pathauto 模块二次修改路径别名。
开启 Global Redirect 模块（http://drupal.org/project/globalredirect）
Global Redirect 模块在页面拥有路径别名的情况下，移除该页面的原始路径，这样可以减少网站的重复内容页面，有利于 SEO。

开启 Meta Tags （nodewords）模块（http://drupal.org/project/nodewords）
Meta Tags 模块可以让您为每个 node、user、view 或 panel 页面设置多种 meta tags，例如：keywords 和 description，有利于 SEO。

开启 Page Title 模块（http://drupal.org/project/page_title）
Page Title 模块能让您自定义页面标题，有利于 SEO。

使用 Drupal XML Sitemap 模块
调整 .htaccess 文件to redirect to "www" or remove the "www" subdomain.
调整您网站主题的 HTML headers -- 许多主题设置不正确。
调整您网站的 robots.txt 文件。在 Drupal 6 中 Drupal 默认的 robots.txt 文件还是有一些问题。
检查安装的第三方模块是否新增了一些重复的链接，如果有，使用在 robots.txt 添加规则对搜索引擎的爬虫进行屏蔽。