Here is a list for reference (from a thread I started about a year ago).
2 Channels:
(Handheld/Pocket Size)
Tascam DR-100 (XLR/3.5mm)
Tascam DR-100 mkII (XLR/3.5mm/digital)
Marantz PMD 660/661 (XLR)
Marantz PMD 620 (3.5mm)
Edirol R-05 (handheld, 2 channel (3.5mm)
Edirol R09/R09H (handheld, 2 ch, 3.5mm) - discontinued
Sony M10 (handheld, 2 channel (3.5mm)
Sony PCM-100
Pyle Pro PPR80 (3.5mm)
Ikey Audio M3 (3.5mm)
Olympus LS-10/LS-10S/LS-11/LS-20m (audio and video)/LS-12/LS-14 (3.5mm)
Olympus LS-100 (XLR/TRS/3.5mm - 2 ch simultaneous recording, multitrack editing)
Tascam DR-40 (XLR/TRS, no 1/8" input)
Tascam DRV1-HD (audio - 3.5mm, and video)/DR-05/DR-03 (3.5mm)
Nagra SD (XLR adapter), Ares, Lino, Pico (3.5mm)
Sony PCM-50 (3.5mm/digital)
Korg MR-1, Korg MR-2 (SD 1-bit, 3.5mm)
(Larger Size)
Marantz PMD 670/671 (XLR, 3.5mm/digital)
Fostex FR-2
Fostex FR-2LE (XLR/TRS)
Tascam HDP2
Korg MR-1000
Sound Devices 702/702t/722
Nagra VI/LB
More than 2 channels:
(Handheld/Pocket Size)
Zoom h4/h4n (XLR/3.5mm - 4 ch)
Roland R-26 (4 external ch: XLR/TRS combo input and 3.5mm, 6 total ch)
Tascam DR-2d (handheld, 4 channels (both inputs 3.5mm)
Zoom H6
(Larger Size)
Tascam HSP82 (8 ch)
Sound Devices 744 (4 ch)
Sound Devices 788 (8 ch)
Sound Devices 633 (6 ch)
Edirol R4 (4 ch)
Edirol R44 (4 ch)
Tascam DR-680 (6 ch)
Cymatec LR-16 (TRS, 16 ch)
Aeta 4MinX (4 ch)
Fostex DCR302 (3 ch)
Sound Devices 664 (6 ch)
Roland R-88 (8 ch)
IOS Recording Devices:
Tascam IXJ2
Apogee One/Duet/Quartet IOS (XLR/TRS)
Fostex AR4i