thirteenfour

Seditionaries Collection by Jun Takahashi and Hiroshi Fujiwara.

Hiroshi Sugimoto, Enoura Observatory, Odawara, Japan, 

12ft.io: the legend himself. definitely my favorite of the bunch by virtue of being the easiest to use (and the easiest url to remember), but it's configured to disable paywall evasion for a handful of popular sites like the new york times, so you'll have to go elsewhere for those.

printfriendly: works great; never had any issues with removing paywalls, even on domains that don't work with 12ft.io. since this site is literally designed to make sites print-friendly, it might simplify the overall formatting of the page you're trying to access, which can be a good or bad thing. my only real issue is that the "element zapper" (which lets you remove content blocks from the print-friendly preview) is a little sensitive if you're browsing on a touchscreen device, which means you might accidentally delete a paragraph when you're just trying to scroll. but if that happens you can reload the page and it'll revert everything back to its original state.

fifteen feet: basically a 12ft clone, minus 12ft's restrictions. haven't used it much since I only discovered it yesterday in the wake of 12ft's 451 error but it seems to do the trick.

archive.today: an archival tool very similar to the wayback machine, but it also works as a de facto paywall removal tool. (the wayback machine seems to remove paywalls as well, but archive.today has better UX imo and is way faster to use.)