You can use custom emojis on Roblox! Alternatives for Twemoji (FOSS).

only works clients since 2020L (November), not 2017M (July)

• FOSS Free and Open Source. No indicator means is Closed Source.
• FORK Uses the source code of an other project as a starting point, then adds modifications on top of it.
• 🪦 Discontinued/paused indefinitely.
• ⚠ Works problematically.
• 💰 Paid or time limited free trial.
• 📆 That in development/planned.
• 🏆 Winner on nominations.

• Roblox
• Bloxstrap ^FOSS
• Roblox Studio Mod Manager ^FOSS
• Roblox Player Mod Manager ^{🪦 FOSS}

• AppleBlox ^FOSS

• Sober ^FOSS
• Vinegar ^FOSS
• Grapejuice ^FOSS
• Cork ^FOSS

• Limrev 2020L ^🪦
• Roblox Filtering Disabled 2020L ^🪦

U - unicode version (minimal version unicode: 13)

• Twitter BnW/Color Emojis SVGinOT (U: 15) [U: 16] ^{📆 FOSS}
• MSWindows Color Emojis (8.0, 8.1, 10, 11.) (U: 6/14) ^🪦
• Noto BnW Emojis (U: 14/16) [U: 17] ^{📆 FOSS}
• TwemojiMozilla Color Emojis (U: 13) ^{🪦 FOSS}
• Catmoji - modded Twemoji (U: 13) ^{🪦 FOSS FORK}
• Emojione Color Emojis (U: 9) ^{🪦 FOSS}
• Emojione BnW Emojis (U: 12) ^{🪦 FOSS FORK}
• Symbola BnW Emoji (U: 14) ^💰u16
• UnifontEx BnW Emoji (U: 15) [U: 16] ^{📆 FOSS FORK}
• Docomo BnW Emoji (U: 3) ^{🪦 FOSS}
• WadaLabMaruGo2004Emoji BnW Emoji (U: 16) [U: 17] ^{📆 FOSS}
• WadaLabChuMaruGo2004Emoji BnW Emoji (U: 16) [U: 17] ^{📆 FOSS}
• Nishiki-teki BnW Emoji (U: 15) [U: 16] ^{📆 FOSS}
• Catrinity Color Emoji (U: 16) [U: 17] ^{⚠ 📆 FOSS}
• Tossface Color Emoji (U: 14-15) [COLRv0] ^{⚠ 📆 FOSS}
• MSFluent Color Emoji 3D (U: 14-15) [COLRv1] ^{⚠ 📆 FOSS 🏆D&AD Award '23}
• Apple Color Emoji (U: 15) [COLRv1] ^📆
• Noto Color Emoji (U: 14)
• Facebook/WhatsApp Color Emoji (U: 14)
• JoyPixels 7.0 Color Emoji (U: 14)
• Samsung Color Emoji (U: 14)