There are numerous manufacturers and suppliers of 3D printing material.
Generally, most are of high quality and have tangle-free spools.
Below is a list of the most popular and well-known brands of 3D printer filament manufacturers. Often these brands offer bulk discounts.
Note: Some spools may come as single-use or reusable. Some also come with cardboard recyclable spools. A "refill" option is often provided.
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Note: The interior diameter and width of a spool are manufacturer-specific. This means that some cardboard spool cores may not fit on all reusable spools. It is nearly impossible to untangle a spool of filament that has unwound.
3D Filiment Profiles (opens in a new tab)
This is a progressive web app that has over 5,000 filaments with detailed information and direct purchase links. The PWA also lets you track your filament inventory.
Requires a GitHub login –