Displayr is described as 'is online data science and data analytics software. It was created so smart people could do their own data science: explore, model, visualize and report. One app for everything. Easy for novices, powerful for experts'. There are nine alternatives to Displayr, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Xfce. The best alternative is RStudio, which is both free and Open Source. Other great sites and apps similar to Displayr are PSPP (Free, Open Source), IBM SPSS Statistics (Paid), STATISTICA (Paid) and Montecarlito (Free, Open Source).
PSPP is a free software application for analysis of sampled data. It has a graphical user interface and conventional command line interface. It is written in C, uses GNU Scientific Library for its mathematical routines, and plotutils for generating graphs.
The IBM SPSS software platform offers advanced statistical analysis, a vast library of machine-learning algorithms, text analysis, open-source extensibility, integration with big data and seamless deployment into applications.
MonteCarlito is a free Excel-add-in to do Monte-Carlo-simulations. Apart from these it can also do statistical analysis like mean, median, standard error, variance, skewness, kurtosis. It can create histograms. The code is open source.
Statwing was built by and for analysts, so you can clean data, explore relationships, and create charts in minutes instead of hours. Simply upload your spreadsheet or dataset, then select the relationships you want to explore.