Gisha is an anti-Israel NGO that is dedicated to denouncing Israel for its restrictions on movement an materials to Gaza. They claim to be non-partisan but they will almost always ignore Hamas violations on freedom of movement from Gaza, concentrating on Israel.
Gisha likes to gather statistics (although not from Israeli sources; they find Hamas and Arab sources more believable.) They created some nice interactive graphs showing the situation on various metrics that they care about, like people and goods allowed through crossings.
Their own graphs show pretty much the opposite of what they get a million dollars a year to prove. Israel is allowing more and more movement; Egypt is doing less and less.