If you're talking about standard springs in a *E7* or an AE86, spring compressors aren't really needed.
Out back, just undo the shocks, jack the car up from rails and the springs should be able to be pulled out.
Up front, undo the top strut nut to the shocks, jack the car up and remove the strut like normal. The springs should come out. Putting them back in however, you may need a spring compressor. If cut it should be easy to put back in.