Free online services and tools for webmasters

• Google chart. Online service to design and display charts on your Web pages. The chart may be a line or a pie, in 2D or 3D.
• Web Font. New fonts for your pages. It is integrated at the display with a JavaScript code.
• Swiffy. Proposed by Google, online tool to convert SWF file into HTML 5, SVG and CSS 3, and so get rid of the Flash player.
• See all the Tools of the Web design.

• Psychic Whois. Help to find a domain name. Information on dropouts.

• Validator W3C. Checks the validity of the HTML and CSS code of a web page. Check also an RSS file.
• Spider simulator. Emulate a robots and displays error messages.
• Browsershot. Show your site on various browsers. The display takes some minutes.
• Rich snippet testing tool. Si la page inclut un microformat, teste sa validité.
• Testing the speed of loading. Not on his computer but from another one.

• Search Status. Firefox extension that display the PR and the traffic for Alexa.
• SEO Quake. Browser extension, that adds a toolbar to display lot of useful data for ranking a website.
• Seologs. PageRank on several data centers.
• Google's toolbar. Displays the PageRank and help to access some services.
• Sparky, Alexa's toolbar. Produces the graph of the trafic of a website. Allows to compare websites.
• PRWeaver. Software to download to display results with PageRank.

• Rank checker. Rank on Google for keywords and perhaps Yahoo and Live. Suggests keywords.
• Ezer. Check for position of a website on keywords.
• Cleverstat's Google monitor query. Software to download to check the position on keywords.

• Google suggest. When a request is entered, Google suggest some others that are frequently requested.
• Google trends.
• Seobook.
• Insights for search. More powerful that Google Trends. Displays the geographic distribution and the changes over time for the demand on keywords.
• Ranks. Occurences of keywords.

• CleverStat's Backlinks Master. Backlinks analyser. Free software to download.
• Urltrends. Analysis of backlinks and external links.
• Backlinks. Display backlinks on some search engines (here).
• Domain pop backlinks. Overview of backlinks to a website (partial).
• SEOCentro. Indicator based on a sum of backlinks for main search engines.
• Majestic SEO. Give the list of links to a page. No all the backlinks.
• Open Site Explorer. Provides the number and a limited list of backlinks to any site. Registering is not required.

• Xenu's Link Sleuth. Link checker to download for Windows.
• Link Checker. Command link tool (here). PHP FTP Synchronizer can also check links in a page when uploaded.

• Copyscape. Search sites similar to your. May be achieved also by a search on Google with a sentence from your pages between quotes.
• Squish. Technical Web service, let know the host of a site among others.
• Who hosts who. Type the domain and know who is the host.
• Spyonweb. To know all the sites from a same webmaster.
• UnderTheSite. What software technologies are used by a Web site? Give the URL to find out.

• Robot Stats. A small PHP code added to your home page detects the passing of robots and stores the dates in a SQL database.

The best means to submit a sitemap is to include its URL into the robots.txt file.

• Simple map. Convenient for a site edited locally and put online then. Build an XML or HTML sitemap. Available here.
• Google sitemap generator. Command line XML sitemap generator.

• Seochat. List of tools for SEO.

• Touchgraph. Displays links as a map, and allows to navigate on the map.

• Crawlprotect. Protect the site against unauthorized crawlers.

• Google Shell. Using Google in command line.
• The article Statistics tools for webmasters, provides more info and more link to tools.