There are literally hundreds of brand names of pen refills out there, so a complete listing is probably not practical. As a guide, all of the ballpoint pens take either a Cross-style or Parjer-style refill except for the mini-pens. (Check the suppliers site or catalog for the details.) All of the fountain pens take a standard European cartridge and/or a standard European piston-type pump and will work with most inks except India inks and certain "high-solids" inks. All rollerball pens will accept Hauser 707 and 777, Schmidt 888, 5888 and Superbowl, Pilot G-2, Zebra JF, Cross 8521 and 8523.