They have a great UI and a wide selection of pricing data for the financial markets. These include equities, forex, futures, bonds, and currencies. The data is in real-time and the UI updates without me needing to refresh the application. It's also free for people who have a TDA account. Review collected by and hosted on G2.com.

Sometimes I just want to have the application up to watch the futures market, but without being logged into the primary account that has the funds in it. To solve this problem, I created a separate "dummy" account, but TDA decided to terminate it because I wasn't willing to put funds into the account. This was a bit annoying because at one point, thinkorswim allowed users to create free accounts, but now they have to be linked to funded accounts. Thus, I have to be logged onto my primary account constantly, which is a security risk for me, just to be able to view real-time data.

They also have an API to fetch out data, but the data isn't super clean. I was hoping thinkorswim would give us an API to fetch out the data in their database, but that hasn't happened yet. Review collected by and hosted on G2.com.