gretl vs RebTel
A side-by-side look at gretl and RebTel. For an in-depth review of either product, follow the links below.
gretl
Office & Productivity
gretl is an open-source statistical package mainly for econometrics. It has an easy-to-use graphical user interface and offers a wide range of statistical techniques including regression analysis, time series, and nonparametric tests.
statisticseconometricsregression-analysistime-series-analysisgui
RebTel
Social & Communications
RebTel is an open-source alternative to Skype focused on privacy and security. It offers encrypted messaging, audio/video calls, screen sharing, and other communication tools.
messagingvoipvideo-callingopen-sourceprivacysecurity