Gel, rollerball, ballpoint, fineliner, fountain, brush — the pen aisle is full of jargon. Here’s a plain-English guide to every pen type you’ll meet as a journaler, what makes each one tick, and who it’s best for.
Gel pens
Water-based gel ink that’s thick, smooth, and richly colored. Gels glide with little pressure and come in every color imaginable, which is why they’re the most popular journaling pens. The downside is that the ink is wet, so it dries slowly and can bleed on thin paper. Best for: most journalers. See our best gel pens.
Ballpoint pens
Oil-based ink that’s thick and dries almost instantly. Traditional ballpoints need a bit of pressure, but modern low-viscosity and hybrid versions (like the Uni-ball Jetstream) write nearly as smoothly as gels while keeping the fast-dry, low-bleed advantage. Best for: thin paper, lefties, and reliability. See our best ballpoint pens.
Rollerball pens
Use thin, water-based liquid ink for a dark, wet, smooth line — like a ballpoint that writes like a fountain pen. Convenient and expressive, but the wet ink can bleed and smudge. Best for: people who find ballpoints too dry. See our best rollerball pens.
Fineliners (pigment liners)
Felt or plastic tips with archival pigment ink (think Sakura Pigma Micron). Waterproof, fade-proof, low-bleed, and precise — ideal for detailed writing, bullet journaling, and drawing. The tips wear down with heavy pressure and aren’t refillable. Best for: no-bleed and permanence. See our best fine point pens and no-bleed pens.
Fountain pens
Use a metal nib and liquid ink from cartridges or a bottle. They require almost no pressure, making long writing sessions comfortable, and swapping inks is part of the appeal. The catch is wet ink that bleeds on cheap paper. Best for: enthusiasts and comfortable long-form writing. See our best fountain pens.
Brush pens
Flexible tips that create thick-and-thin line variation for hand-lettering, headers, and calligraphy. Range from firm hard-tips (beginner-friendly) to genuine bristle brushes. Best for: lettering and decoration. See our best brush pens.
Erasable pens
Heat-sensitive gel ink that erases with friction. Perfect for planners and drafts, but not archival — heat can erase your writing. Best for: planning and anything you’ll revise. See our best erasable pens.
Which should you choose?
Most journalers end up with two or three: a gel or ballpoint for daily writing, a fineliner for no-bleed detail, and maybe a brush pen for headers. Start with our how to choose a journaling pen guide, then see the overall best pens for journaling.