Forecasts for standard and non standard scenarios with future surveys

I will outline the three different projects in which I am involved, all of which are still ongoing. The first one is the code comparison for the galaxy clustering Fisher matrix calculation, which is done inside the Euclid Inter Science Taskforce working group. I will sketch the steps which were done to reach agreement between codes and the important things to worry about when writing such a code. The second one is about forecasts for nonlocal gravity models with several upcoming observations, such as Euclid, DESI and SKA. I will show how future experiments will be in principle able to distinguish nonlocal models from LCDM. The third one is on the calculation and possible detection in the far future of second order lensing for intensity mapping.