Access to most major US, European, and Asian stock, options and futures exchanges. Last time I checked not a single data provider (eSignal possibly?) even offered access to those markets, and not one broker other than IB.
Here are 3 more
http://int.tddirectinvesting.com/investment-products/stocks
Trade on 18 Stock Exchanges across North America, Europe and Asia Pacific
http://www.swissquote.ch
Electronic share dealing is available on the following exchanges: Switzerland (SIX), U.S.
(NYSE, Arca, AMEX, NASDAQ), Austria (ATX), UK (LSE), Italy (Borsa Italiana), Frankfurt
(XETRA), Euronext, Canada (TSX, TSX-V), and the pan-Nordic OMX trading facility
(Stockholm, Helsinki, Oslo, and Copenhagen). Another 60 markets in 40 countries,
including Brazil, S. Africa, Middle East, Asia and Australia are traded via phone-executed
orders. Trading in options, futures, warrants, bonds, structured products and forex is also
available Commission on ETFs and over 3,000 funds
http://www.iocbc.com/
iOCBC is the company’s online trading division offering commodity futures, forex, ETFs, shares, warrants, and Extended Settlement contracts***. Although the depth of products offered is comparatively shallow, the breadth of exchanges traded is impressive: Australia (ASX), Hong Kong (HKEX), Indonesia (IDX), London (LSE), Malaysia (BURSA), Philippines (PSE), Shanghai (SSE)& Shenzhen (SZSE) B-shares only, Singapore (SGX), Thailand (SET), Tokyo (TSE), and the U.S. (NYSE, AMEX, NASDAQ).