The galatea from numato is pretty affordable and has 2Gb (256MB) of onboard RAM and comes with a dual ethernet and pmod breakout board from Amazon for $300 USD.
The lattice ECP5 PCIe board comes with I think 128MB DDR3 and dual gigabit ethernet.
And for boards without memory but lots of I/O there is Mesa Electronics: http://www.mesanet.com/ CNC oriented but you can do whatever you want with the FPGA.
The galatea from numato is pretty affordable and has 2Gb (256MB) of onboard RAM and comes with a dual ethernet and pmod breakout board from Amazon for $300 USD.
http://www.latticestore.com/products/tabid/417/categoryid/59...
The lattice ECP5 PCIe board comes with I think 128MB DDR3 and dual gigabit ethernet.
And for boards without memory but lots of I/O there is Mesa Electronics: http://www.mesanet.com/ CNC oriented but you can do whatever you want with the FPGA.