There are national and regional link-ups to major Jewish or non-denominational organizations that fights Antisemitism, racism, etc, and some provide worldwide coverage, although the latter  websites are updated only as new reports are ready for publication. Our focus is on those offering hands-on, online resources:

1. The Anti-Defamation League (ADL), a UN-recognized NGO whose remit includes fighting Antisemitism, fostering racial tolerance through education and community action, offering worldwide coverage of Antisemitism and combatting Antisemitism. It is very active in legislation and grass-roots work in the US; there is a major Israel office;
2. The World Jewish Congress and its regional constituent organizations, representing 80 world Jewish communities and their leadership, produces extensive research Publications covering old and new Jewish communities worldwide, with updated reporting, particularly on Europe and Iran, as well as campaigning for the UN adoption of a resolution condemning Antisemitism. Based in Geneva, with an Israel office. The European Jewish Congress is an affiliated organization;
3. The American Jewish Committee engages in diplomacy, education, and advocacy to fight Antisemitism worldwide, including with the OSCE [Organization for Security & Cooperation in Europe], towards its reports. It offers books, research, and articles by recognized authorities on both the phenomena and response;
4. The Vidal Sassoon International Center for the Study of Antisemitism [SICSA] at the Hebrew University of Jerusalem, directed by Professor Robert Wistrich, dedicated to historical and contemporary research of Antisemitism and relations between Jews and non-Jews. Articles by Wistrich, conference recordings, contemporary papers, links;
5. The Stephen Roth Institute for the Study of Contemporary Antisemitism and Racism at Tel Aviv University, which offers ongoing updated materials, as well as annual reports: general analysis, country reports (the foundations for EU reports) and statistics. Hebrew abstracts. [For Australia, see the AJN site];
6. The Institute for Jewish Policy Research [UK] maintains a database of annual country reports on Antisemitic and Xenophobic incidents, related phenomena (including hate music), and hate crime - the last in cooperation with the British police. The European extremism section offers commissioned articles and research, and is available in English and French;
7. The Community Security Trust [CST] publishes an annual report for the UK, the latest of which highlights the rise in violent Antisemitism during 2006.
8. The Institute for the Study of Global Antisemitism and Policy -founded by leading academics and jurists, together with concerned public activists, it engages in the academic world through its Seminar Series. Online papers & videos available [Yale University website];
9. LICRA [France, Switzerland] La Ligue Internationale Contre le Racisme et l'Antisemitisme. A non-denominational organization founded by young Jewish, Muslim, and other concerned activists to promote racial tolerance, coordinate grass roots pressure for the welfare of citizens and immigrants, and agitate for improved legislation and law enforcement;
10. The Jewish Virtual Library provides an index of helpful articles on Antisemitism and response to it – the scope is historical, legislative, contemporary, and regional and includes extensive documentation related to Christianity.
11. The American School in Japan - Powerpoint presentation on Antisemitism in Europe, suitable for high school.

In addition, there are many commemorative Shoah [Holocaust] organizations, non-profit organizations, and research foundations which offer valuable documents, orquality resources and programming, in their active stand against Antisemitism. We bring a selection here:

1. Yad Vashem, the Israel Holocaust Martyrs' and Heroes' Authority, which offers extensive documentation, background, and educational programming online, with multiple language versions of its programming files. See also the dedicated lesson plan pack on Antisemitism, with in-built resources;
2. The Simon Wiesenthal Center, and its Museum for Tolerance with online resources, tools and lesson guides for educators [multilingual] and training for the public and criminal justice sector. The Center engages in public and concerned action to foster tolerance in different life environments and is active in advocacy to international organizations. Offices in the USA, Europe, Israel;
3. The United States Holocaust Memorial Museum offers an ongoing exhibit: podcasts; analysis of the infamous "Protocols"; links to encyclopedic articles, chronology; bibliography; and related resources on Antisemitism. Also see: Steven Spielberg archive films of Nazi racism; contemporary insights  into implications of the Shoah and Antisemitism, particularly Islamic, by USHMM specialists.

There are many other resources, and some of these are included in the answers to Questions #9-10.