Hieronder staat de lijst met bekende leveranciers van holter en event recording apparatuur.
| Fabrikant | Leverancier |
| Amedtech | E-medical |
| Spacelabs/Del mar Reynolds | ITéMedical |
| GE Healthcare | GE Healthcare |
| Custo med Gmbh | Alphatron |
| Philips Zymed | Grafi medics |
| Medilog / Schiller / Braemar | Arseus Medical |
| Welch Allyn / Mortara / Hillrom | Mortara |
| Labtech | Procare |
| Live tech | Wave Medical |