Spell checker, translator:

Spellcheck: online spell checker
Babelfish Language Translator: available in English, German, Spanish, French, Italian and Portuguese.

HTML, XHTML , CSS validator:

W3 CSS validator: you can validate CSS code by links or file upload
W3 HTML/XHTML validator: a free service that checks documents like HTML and XHTML for conformance to W3C Recommendations and other standards.

WDG HTML Validator: you can validate HTML files on your computer or you can enter your HTML directly. To quickly validate multiple URLs, try the batch mode.

Browser check:

Anybrowser: Simply enter your URL to view
Dicentral: Check your browser setting

Web Site Counters and Trackers

Alpha
Statcounter

Online logo design, clip arts

Cooltext Make logo online
Crecon: Beautiful banners

Search your site

Atomz: Offers a free search engine for websites with less than 500 pages.
Google's SiteSearch: search your site with Google's optional Free site search.

Link Validators and Dead Link Check

Watson&addy: Analyze HTML syntax, Verify regular links ,Verify image links ,Generate word counts, Spell-check non-HTML text, Compute estimated download speeds, Check search engine compatibility, Check site link popularity
Webmaster-toolkit link-checker: a good website with many free webmaster tools.

Ranking And Position Check

Alexa: provides Traffic Rankings and Related Links.
Trellian: provides search engine Rankings and keyword analysis.

Load time check

Watson&addy

Web Design: Related Links