This is not a list about the WonderWitch - rather, it's meant to list hardware which may have been used in the WonderSwan's development workflow which was not available to a regular end user.

Note that any photos or videos provided here, unless otherwise specified, are not licensed under the same Creative Commons terms as the wiki. Please ask their author for permission.

(Source: SONIC3D)

This also looks like a DP-1000T (or similar device):

(Source: Nexon Computer Museum)

(Source: Preserved by Normmatt)

(Source: SONIC3D)

(Source: jamezfat)

(Source: No-Intro)

Printed checksum does not match final ROM.

(Source: Yahoo! Auctions)

(Source: trap15)

(Source: No-Intro)

(Source: ts76573; video footage)

(Source: spmrp)

(Source: No-Intro)

(Source: No-Intro)

(Source: turfmasta)

(Source: zan2zanjp)

(Source: Yahoo! Auctions)

(Source: spmrp - lower-left corner)

(Source: GeeBee)

(Source: No-Intro)

(Source: No-Intro)

(Source: No-Intro)

(Source: Preserved by Normmatt)

(Source: SONIC3D)

The overdump contains “Naruto” game data.

(Source: Adam Jaremko)

Contains a 2003 mapper, 2x16Mbit Flash and 4Mbit SRAM.

(Source: Yahoo! Auctions)

(Source: trap15)

The “TV Swan” refers to a set of devices made available by Bandai to display WonderSwan output on a TV.

(Source: WonderWitch.com)

These general traits seem to be true:

• TV Swan units support horizontal/vertical screen orientation; this is detected by observing the state of the vertical screen orientation icon to the right-hand side of the LCD.
• TV Swan units shift the screen when undocumented WSC vertical timing registers are changed, much in the same way as third-party IPS panels (see: Fire Lancer).

(Source: TEMJISO)

• (Unconfirmed) Supports “mono” WonderSwan software only.
• Only contains a composite output.

(Source: Qute Corporation)

• Supports “mono” WonderSwan software only.
• Adds an S-Video output. Does not support simultaneous composite and S-Video output.
• According to WonderWitch.com, it was sold to vendors at a price of around 140,000 円 in the year 2000.

(Source: WonderWitch.com)

(Source: TEMJISO)

• Uses a WonderSwan Color “dummy” unit.
• Supports “mono” and “color” WonderSwan software.

(Source: byemu)

• Uses a WonderSwan Color “dummy” unit.
• Supports “mono” and “color” WonderSwan software.
• The most common model on auctions.

(Sources: TEMJISO, among others)

(Source: Ciglio)

(Source: NidoneNbox1777)

(Source: TEMJISO)

(Source: ts76573)

(Source: Yahoo! Auctions - 2015)

• Uses a working SwanCrystal unit.
• Supports “mono” and “color” WonderSwan software.

(Source: zan2zanjp)

• Used on a promotional “Judgement Silversword” CD.

(Source: TEMJISO)

• Used in a May 2022 “One Piece” television special.
• Likely to be a loan unit from Bandai.

(Source: TEMJISO)

(Source: PC Watch, 2000.08.30. English translation available at Video Game Kraken)