Geezus Robert, you must be in April fools joke mode or something... Here's the OP... Almost every broker OP mentioned is supported by Medved. The list also supports (some) futures only brokers, with rithmic data.
"Im not sure what you are looking for (% chg chart) but MedvedTrader might be worth a look." If you have two stocks on a chart, the simplest way to compare them is using %change on the y-axis. Using price on the Y-axis doesn't capture the two stocks appreciation relative to one another and forces the user to do the calculation in their head.
Is Ninjatrader worth considering? Great charts and easy to use. I found that it lacks some basic functionality that I desire, but I solved it by either buying 3rd party add-ons or creating them from scratch as a custom script/indicator. As an example, I'm fairly sure you won't get % change charts on NT, but it should be trivial to solve with an indicator. The obvious drawdown is that it ain't compatible with a lot of brokers for stocks. In fact, I think Interactive Brokers is the only one. Another drawdown is that they seem slow as hell to implement user requests and complains. In contrast, Sierra is known to fix and implement new stuff fairly quickly. At a point, I was fairly frustrated by Ninjatrader and started looking into other platforms, but I realized that no retail platform is perfect and decided to just stay with what I know. I run it on a workstation and it's very, very stable. The one platform I was considering was SierraCharts which seems absolutely fantastic, but, it is said that there's quite the learning curve to get fully up to speed. I decided my time was better spent improving my craft instead of learning new software.
Is this really an April Fools joke or am I just not getting it? Every platform that I use gives you % change when you compare two assets on the same chart (or give you an option to choose between $ or %). For example, here's the layover of crude oil and natural gas futures on TradingView. As you can see, % chg is on the Y-axis.
Highly touted TC2000 doesn't. Interactive Brokers doesn't and doesn't even understand the rationale. TradeStation would rather eat cow pats than put two stocks on the same chart. TradingView can do %change but the measure is irrelevant unless it can be linked with a log scale, which insures that the same slope anywhere on the chart represents the same degree of price appreciation. In which case, Fidelity doesn't either. That's five out of six big name platforms. Platform developers obviously aren't math guys. Only Thinkorswim and Marketsmith (on a five year chart) implement %change scaling in a way that can be used. (For periods less than three months, %change is reasonably accurate without log scaling.) Which means that a trader as brilliant as Oliver Kell is misdrawing his exit and entry points.